Avian conservation efforts must account for changes in vegetation composition and structure associated with climate change. We modeled vegetation change and the probability of occurrence of birds to project changes in winter bird distributions associated with climate change and fire management in the northern Chihuahuan Desert (southwestern U.S.A.). We simulated vegetation change in a process-based model (Landscape and Fire Simulator) in which anticipated climate change was associated with doubling of current atmospheric carbon dioxide over the next 50 years. We estimated the relative probability of bird occurrence on the basis of statistical models derived from field observations of birds and data on vegetation type, topography, and roads. We selected 3 focal species, Scaled Quail (Callipepla squamata), Loggerhead Shrike (Lanius ludovicianus), and Rock Wren (Salpinctes obsoletus), that had a range of probabilities of occurrence for our study area. Our simulations projected increases in relative probability of bird occurrence in shrubland and decreases in grassland and Yucca spp. and ocotillo (Fouquieria splendens) vegetation. Generally, the relative probability of occurrence of all 3 species was highest in shrubland because leaf-area index values were lower in shrubland. This high probability of occurrence likely is related to the species' use of open vegetation for foraging. Fire suppression had little effect on projected vegetation composition because as climate changed there was less fuel and burned area. Our results show that if future water limits on plant type are considered, models that incorporate spatial data may suggest how and where different species of birds may respond to vegetation changes.
","language":"English, Spanish","publisher":"Society for Conservation Biology","doi":"10.1111/j.1523-1739.2011.01684.x","issn":"08888892","usgsCitation":"White, J., Gutzwiller, K.J., Barrow, W., Johnson-Randall, L., Zygo, L., and Swint, P., 2011, Understanding interaction effects of climate change and fire management on bird distributions through combined process and habitat models: Conservation Biology, v. 25, no. 3, p. 536-546, https://doi.org/10.1111/j.1523-1739.2011.01684.x.","productDescription":"11 p.","startPage":"536","endPage":"546","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":216808,"rank":2,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1523-1739.2011.01684.x"},{"id":244700,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Chihuahuan Desert","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -111.533203125,\n 28.92163128242129\n ],\n [\n -111.533203125,\n 34.379712580462204\n ],\n [\n -101.337890625,\n 34.379712580462204\n ],\n [\n -101.337890625,\n 28.92163128242129\n ],\n [\n -111.533203125,\n 28.92163128242129\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"25","issue":"3","noUsgsAuthors":false,"publicationDate":"2011-04-28","publicationStatus":"PW","scienceBaseUri":"505bbc4be4b08c986b328b52","contributors":{"authors":[{"text":"White, Joseph D.","contributorId":56077,"corporation":false,"usgs":true,"family":"White","given":"Joseph D.","affiliations":[],"preferred":false,"id":443575,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gutzwiller, Kevin J.","contributorId":101923,"corporation":false,"usgs":true,"family":"Gutzwiller","given":"Kevin","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":443576,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barrow, Wylie C. 0000-0003-4671-2823 barroww@usgs.gov","orcid":"https://orcid.org/0000-0003-4671-2823","contributorId":1988,"corporation":false,"usgs":true,"family":"Barrow","given":"Wylie C.","email":"barroww@usgs.gov","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"preferred":false,"id":443571,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson-Randall, Lori 0000-0003-0100-994X","orcid":"https://orcid.org/0000-0003-0100-994X","contributorId":43604,"corporation":false,"usgs":true,"family":"Johnson-Randall","given":"Lori","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":false,"id":443573,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Zygo, Lisa","contributorId":9898,"corporation":false,"usgs":true,"family":"Zygo","given":"Lisa","affiliations":[],"preferred":false,"id":443572,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Swint, Pamela","contributorId":32765,"corporation":false,"usgs":true,"family":"Swint","given":"Pamela","email":"","affiliations":[],"preferred":false,"id":443574,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70036376,"text":"70036376 - 2011 - Sedimentary response to orogenic exhumation in the northern Rocky Mountain Basin and Range province, Flint Creek basin, west-central Montana","interactions":[],"lastModifiedDate":"2026-01-29T14:31:52.912121","indexId":"70036376","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1168,"text":"Canadian Journal of Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentary response to orogenic exhumation in the northern Rocky Mountain Basin and Range province, Flint Creek basin, west-central Montana","docAbstract":"Middle Eocene through Upper Miocene sedimentary and volcanic rocks of the Flint Creek basin in western Montana accumulated during a period of significant paleoclimatic change and extension across the northern Rocky Mountain Basin and Range province. Gravity modelling, borehole data, and geologic mapping from the Flint Creek basin indicate that subsidence was focused along an extensionally reactivated Sevier thrust fault, which accommodated up to 800 m of basin fill while relaying stress between the dextral transtensional Lewis and Clark lineament to the north and the Anaconda core complex to the south. Northwesterly paleocurrent indicators, foliated metamorphic lithics, 64 Ma (40Ar/39Ar) muscovite grains, and 76 Ma (U-Pb) zircons in a ca. 27 Ma arkosic sandstone are consistent with Oligocene exhumation and erosion of the Anaconda core complex. The core complex and volcanic and magmatic rocks in its hangingwall created an important drainage divide during the Paleogene shedding detritus to the NNW and ESE. Following a major period of Early Miocene tectonism and erosion, regional drainage networks were reorganized such that paleoflow in the Flint Creek basin flowed east into an internally drained saline lake system. Renewed tectonism during Middle to Late Miocene time reestablished a west-directed drainage that is recorded by fluvial strata within a Late Miocene paleovalley. These tectonic reorganizations and associated drainage divide explain observed discrepancies in provenance studies across the province. Regional correlation of unconformities and lithofacies mapping in the Flint Creek basin suggest that localized tectonism and relative base level fluctuations controlled lithostratigraphic architecture.","language":"English, French","publisher":"Canadian Science Publishing","doi":"10.1139/e10-107","issn":"00084077","usgsCitation":"Portner, R., Hendrix, M., Stalker, J., Miggins, D.P., and Sheriff, S., 2011, Sedimentary response to orogenic exhumation in the northern Rocky Mountain Basin and Range province, Flint Creek basin, west-central Montana: Canadian Journal of Earth Sciences, v. 48, no. 7, p. 1131-1153, https://doi.org/10.1139/e10-107.","productDescription":"23 p.","startPage":"1131","endPage":"1153","numberOfPages":"23","costCenters":[],"links":[{"id":246188,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8a38e4b08c986b3170bf","contributors":{"authors":[{"text":"Portner, R.A.","contributorId":41685,"corporation":false,"usgs":true,"family":"Portner","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":455796,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hendrix, M.S.","contributorId":6300,"corporation":false,"usgs":true,"family":"Hendrix","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":455794,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stalker, J.C.","contributorId":90143,"corporation":false,"usgs":true,"family":"Stalker","given":"J.C.","affiliations":[],"preferred":false,"id":455797,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miggins, D. P.","contributorId":32367,"corporation":false,"usgs":true,"family":"Miggins","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":455795,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sheriff, S.D.","contributorId":101001,"corporation":false,"usgs":true,"family":"Sheriff","given":"S.D.","email":"","affiliations":[],"preferred":false,"id":455798,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70032259,"text":"70032259 - 2011 - Detecting post-fire burn severity and vegetation recovery using multitemporal remote sensing spectral indices and field-collected composite burn index data in a ponderosa pine forest","interactions":[],"lastModifiedDate":"2017-04-06T12:27:29","indexId":"70032259","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Detecting post-fire burn severity and vegetation recovery using multitemporal remote sensing spectral indices and field-collected composite burn index data in a ponderosa pine forest","docAbstract":"It is challenging to detect burn severity and vegetation recovery because of the relatively long time period required to capture the ecosystem characteristics. Multitemporal remote sensing data can providemultitemporal observations before, during and after a wildfire, and can improve the change detection accuracy. The goal of this study is to examine the correlations between multitemporal spectral indices and field-observed burn severity, and to provide a practical method to estimate burn severity and vegetation recovery. The study site is the Jasper Fire area in the Black Hills National Forest, South Dakota, that burned during August and September 2000. Six multitemporal Landsat images acquired from 2000 (pre-fire), 2001 (post-fire), 2002, 2003, 2005 and 2007 were used to assess burn severity. The normalized difference vegetation index (NDVI), enhanced vegetation index (EVI), normalized burn ratio (NBR), integrated forest index (IFI) and the differences of these indices between the pre-fire and post-fire years were computed and analysed with 66 field-based composite burn index (CBI) plots collected in 2002. Results showed that differences of NDVI and differences of EVI between the pre-fire year and the first two years post-fire were highly correlated with the CBI scores. The correlations were low beyond the second year post-fire. Differences of NBR had good correlation with CBI scores in all study years. Differences of IFI had low correlation with CBI in the first year post-fire and had good correlation in later years. A CBI map of the burnt area was produced using regression tree models and the multitemporal images. The dynamics of four spectral indices from 2000 to 2007 indicated that both NBR and IFI are valuable for monitoring long-term vegetation recovery. The high burn severity areas had a much slower recovery than the moderate and low burn areas.","language":"English","publisher":"Taylor & Francis","publisherLocation":"London, UK","doi":"10.1080/01431161.2010.524678","issn":"01431161","usgsCitation":"Chen, X., Vogelmann, J., Rollins, M., Ohlen, D., Key, C.H., Yang, L., Huang, C., and Shi, H., 2011, Detecting post-fire burn severity and vegetation recovery using multitemporal remote sensing spectral indices and field-collected composite burn index data in a ponderosa pine forest: International Journal of Remote Sensing, v. 32, no. 23, p. 7905-7927, https://doi.org/10.1080/01431161.2010.524678.","productDescription":"23 p.","startPage":"7905","endPage":"7927","numberOfPages":"23","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":486672,"rank":0,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/P1PEKZPH","text":"USGS data release","linkHelpText":"Fuels Data for the 2000 Jasper Fire in the Black Hills of South Dakota, Collected in 2023 and 2024"},{"id":242579,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214827,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431161.2010.524678"}],"volume":"32","issue":"23","noUsgsAuthors":false,"publicationDate":"2011-08-09","publicationStatus":"PW","scienceBaseUri":"5059ff62e4b0c8380cd4f164","contributors":{"authors":[{"text":"Chen, Xuexia","contributorId":14213,"corporation":false,"usgs":true,"family":"Chen","given":"Xuexia","affiliations":[],"preferred":false,"id":513930,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vogelmann, James E. 0000-0002-0804-5823 vogel@usgs.gov","orcid":"https://orcid.org/0000-0002-0804-5823","contributorId":649,"corporation":false,"usgs":true,"family":"Vogelmann","given":"James E.","email":"vogel@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":513927,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rollins, Matt mrollins@usgs.gov","contributorId":647,"corporation":false,"usgs":true,"family":"Rollins","given":"Matt","email":"mrollins@usgs.gov","affiliations":[],"preferred":true,"id":513926,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ohlen, Donald","contributorId":121016,"corporation":false,"usgs":true,"family":"Ohlen","given":"Donald","affiliations":[],"preferred":false,"id":513932,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Key, Carl H. carl_key@usgs.gov","contributorId":4138,"corporation":false,"usgs":true,"family":"Key","given":"Carl","email":"carl_key@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":513928,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Yang, Limin 0000-0002-2843-6944 lyang@usgs.gov","orcid":"https://orcid.org/0000-0002-2843-6944","contributorId":4305,"corporation":false,"usgs":true,"family":"Yang","given":"Limin","email":"lyang@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":513929,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Huang, Chengquan","contributorId":25378,"corporation":false,"usgs":true,"family":"Huang","given":"Chengquan","affiliations":[],"preferred":false,"id":513931,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Shi, Hua 0000-0001-7013-1565 hshi@usgs.gov","orcid":"https://orcid.org/0000-0001-7013-1565","contributorId":646,"corporation":false,"usgs":true,"family":"Shi","given":"Hua","email":"hshi@usgs.gov","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":513925,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70036867,"text":"70036867 - 2011 - The 25 October 2010 Mentawai tsunami earthquake, from real-time discriminants, finite-fault rupture, and tsunami excitation","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036867","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"The 25 October 2010 Mentawai tsunami earthquake, from real-time discriminants, finite-fault rupture, and tsunami excitation","docAbstract":"The moment magnitude 7.8 earthquake that struck offshore the Mentawai islands in western Indonesia on 25 October 2010 created a locally large tsunami that caused more than 400 human causalities. We identify this earthquake as a rare slow-source tsunami earthquake based on: 1) disproportionately large tsunami waves; 2) excessive rupture duration near 125 s; 3) predominantly shallow, near-trench slip determined through finite-fault modeling; and 4) deficiencies in energy-to-moment and energy-to-duration-cubed ratios, the latter in near-real time. We detail the real-time solutions that identified the slow-nature of this event, and evaluate how regional reductions in crustal rigidity along the shallow trench as determined by reduced rupture velocity contributed to increased slip, causing the 5-9 m local tsunami runup and observed transoceanic wave heights observed 1600 km to the southeast. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2010GL046498","issn":"00948276","usgsCitation":"Newman, A., Hayes, G., Wei, Y., and Convers, J., 2011, The 25 October 2010 Mentawai tsunami earthquake, from real-time discriminants, finite-fault rupture, and tsunami excitation: Geophysical Research Letters, v. 38, no. 5, https://doi.org/10.1029/2010GL046498.","costCenters":[],"links":[{"id":217798,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010GL046498"},{"id":245770,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"38","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-03-05","publicationStatus":"PW","scienceBaseUri":"505ba651e4b08c986b32104f","contributors":{"authors":[{"text":"Newman, A.V.","contributorId":85806,"corporation":false,"usgs":true,"family":"Newman","given":"A.V.","email":"","affiliations":[],"preferred":false,"id":458199,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hayes, G.","contributorId":81349,"corporation":false,"usgs":true,"family":"Hayes","given":"G.","affiliations":[],"preferred":false,"id":458198,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wei, Y.","contributorId":9502,"corporation":false,"usgs":true,"family":"Wei","given":"Y.","email":"","affiliations":[],"preferred":false,"id":458196,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Convers, J.","contributorId":17857,"corporation":false,"usgs":true,"family":"Convers","given":"J.","affiliations":[],"preferred":false,"id":458197,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70193654,"text":"70193654 - 2011 - Dispersal and dam passage of sonic-tagged juvenile lake sturgeon in the upper Tennessee River","interactions":[],"lastModifiedDate":"2017-11-13T14:35:18","indexId":"70193654","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3896,"text":"Proceedings of the Southeastern Association of Fish and Wildlife Agencies","active":true,"publicationSubtype":{"id":10}},"title":"Dispersal and dam passage of sonic-tagged juvenile lake sturgeon in the upper Tennessee River","docAbstract":"More than 90,000 state-endangered lake sturgeon (Acipenser fulvescens) have been stocked into the French Broad River, Holston River, and Fort Loudoun Lake in the upper Tennessee River system. Although incidental reports of anglers catching these fish have increased, little is known about their fate after stocking. Therefore, this study was conducted to evaluate lake sturgeon dispersal throughout the system. Seven submersible ultrasonic receivers were deployed in the upper Tennessee River system and 37 juvenile fish (mean fork length = 660 mm) were surgically implanted with ultrasonic transmitters in the fall of 2007. These fish were stocked at two sites in the headwaters of Fort Loudoun Lake. The receivers logged 1,345 detections of tagged fish and manual tracking located 32 of the 37 tagged lake sturgeon over 21 months. Ten (31%) tagged fish passed through Fort Loudoun Dam and were located downstream in the headwaters of Watts Bar Reservoir; the other tagged fish were still at large above Fort Loudoun Dam when tracking ceased in 2009. Of all fish stocked, three (9%) were last located in the French Broad River and none were located in the Holston River.
","language":"English","publisher":"Southeastern Association of Fish and Wildlife Agencies","usgsCitation":"Collier, W.R., Bettoli, P.W., and Scholten, G.D., 2011, Dispersal and dam passage of sonic-tagged juvenile lake sturgeon in the upper Tennessee River: Proceedings of the Southeastern Association of Fish and Wildlife Agencies, v. 65, p. 143-147.","productDescription":"5 p.","startPage":"143","endPage":"147","ipdsId":"IP-030399","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":348719,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Tennessee","otherGeospatial":"Tennessee River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -85.23468017578125,\n 35.0906979730151\n ],\n [\n -83.1170654296875,\n 35.0906979730151\n ],\n [\n -83.1170654296875,\n 36.38591277287651\n ],\n [\n -85.23468017578125,\n 36.38591277287651\n ],\n [\n -85.23468017578125,\n 35.0906979730151\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"65","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a6107fce4b06e28e9c2562c","contributors":{"authors":[{"text":"Collier, William R.","contributorId":200303,"corporation":false,"usgs":false,"family":"Collier","given":"William","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":721847,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bettoli, Phillip William pbettoli@usgs.gov","contributorId":1919,"corporation":false,"usgs":true,"family":"Bettoli","given":"Phillip","email":"pbettoli@usgs.gov","middleInitial":"William","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":719765,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scholten, George D.","contributorId":149668,"corporation":false,"usgs":false,"family":"Scholten","given":"George","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":721848,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036613,"text":"70036613 - 2011 - High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope","interactions":[],"lastModifiedDate":"2020-12-29T18:00:03.333486","indexId":"70036613","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2682,"text":"Marine and Petroleum Geology","active":true,"publicationSubtype":{"id":10}},"title":"High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope","docAbstract":"A dielectric logging tool, electromagnetic propagation tool (EPT), was deployed in 2007 in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert Well), North Slope, Alaska. The measured dielectric properties in the Mount Elbert well, combined with density log measurements, result in a vertical high-resolution (cm-scale) estimate of gas hydrate saturation. Two hydrate-bearing sand reservoirs about 20 m thick were identified using the EPT log and exhibited gas-hydrate saturation estimates ranging from 45% to 85%. In hydrate-bearing zones where variation of hole size and oil-based mud invasion are minimal, EPT-based gas hydrate saturation estimates on average agree well with lower vertical resolution estimates from the nuclear magnetic resonance logs; however, saturation and porosity estimates based on EPT logs are not reliable in intervals with substantial variations in borehole diameter and oil-based invasion.
EPT log interpretation reveals many thin-bedded layers at various depths, both above and below the thick continuous hydrate occurrences, which range from 30-cm to about 1-m thick. Such thin layers are not indicated in other well logs, or from the visual observation of core, with the exception of the image log recorded by the oil-base microimager. We also observe that EPT dielectric measurements can be used to accurately detect fine-scale changes in lithology and pore fluid properties of hydrate-bearing sediments where variation of hole size is minimal. EPT measurements may thus provide high-resolution in-situ hydrate saturation estimates for comparison and calibration with laboratory analysis.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.marpetgeo.2010.03.001","issn":"02648172","usgsCitation":"Sun, Y., Goldberg, D., Collett, T.S., and Hunter, R., 2011, High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Marine and Petroleum Geology, v. 28, no. 2, p. 450-459, https://doi.org/10.1016/j.marpetgeo.2010.03.001.","productDescription":"10 p.","startPage":"450","endPage":"459","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":245574,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217617,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marpetgeo.2010.03.001"}],"country":"United States","state":"Alaska","otherGeospatial":"North Slope","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -166.55273437499997,\n 67.44122869796351\n ],\n [\n -140.888671875,\n 67.44122869796351\n ],\n [\n -140.888671875,\n 71.7739410364347\n ],\n [\n -166.55273437499997,\n 71.7739410364347\n ],\n [\n -166.55273437499997,\n 67.44122869796351\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a313ce4b0c8380cd5dd54","contributors":{"authors":[{"text":"Sun, Y.","contributorId":47986,"corporation":false,"usgs":true,"family":"Sun","given":"Y.","email":"","affiliations":[],"preferred":false,"id":457005,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goldberg, D.","contributorId":72624,"corporation":false,"usgs":true,"family":"Goldberg","given":"D.","email":"","affiliations":[],"preferred":false,"id":457007,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Collett, Timothy S. 0000-0002-7598-4708 tcollett@usgs.gov","orcid":"https://orcid.org/0000-0002-7598-4708","contributorId":1698,"corporation":false,"usgs":true,"family":"Collett","given":"Timothy","email":"tcollett@usgs.gov","middleInitial":"S.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":457006,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hunter, R.","contributorId":36778,"corporation":false,"usgs":true,"family":"Hunter","given":"R.","affiliations":[],"preferred":false,"id":457004,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70192705,"text":"70192705 - 2011 - Upper Cretaceous bituminous coal deposits of the Olmos Formation, Maverick County, Texas","interactions":[],"lastModifiedDate":"2020-10-22T16:27:30.185583","indexId":"70192705","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesTitle":{"id":5382,"text":"AAPG Studies in Geology","active":false,"publicationSubtype":{"id":24}},"chapter":"13","title":"Upper Cretaceous bituminous coal deposits of the Olmos Formation, Maverick County, Texas","docAbstract":"This report describes the bituminous coal deposits of the Olmos Formation (Navarro Group, Upper Cretaceous; Figures 1, 2) of Maverick County in south Texas. Although these were not evaluated quantitatively as part of the current Gulf Coastal Plain coal-resource assessment, a detailed review is presented in this chapter.
Prior to the late 1920s, these coal beds were mined underground on a large scale in the vicinity of Eagle Pass, Texas (Figure 1). Since the 1970s, Olmos Formation coals have been mined extensively in both underground and surface mines in nearby Coahuila, Mexico, to supply mine-mouth fuel for power generation at a plant nearby. A tract northeast of Eagle Pass was permitted in the late 1990s for surface mining. In east-central Maverick County, a coalbed methane field is being developed in coal beds of the lower part of the Olmos Formation (Barker et al., 2002; Scott, 2003).
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Geologic assessment of coal in the Gulf of Mexico coastal plain","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"American Association of Petroleum Geologists","usgsCitation":"Hook, R.W., Warwick, P.D., and SanFilipo, J., 2011, Upper Cretaceous bituminous coal deposits of the Olmos Formation, Maverick County, Texas, chap. 13 of Geologic assessment of coal in the Gulf of Mexico coastal plain: AAPG Studies in Geology, v. 62, p. 277-285.","productDescription":"9 p.","startPage":"277","endPage":"285","ipdsId":"IP-020061","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":350926,"rank":1,"type":{"id":15,"text":"Index 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PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a743589e4b0a9a2e9e25cca","contributors":{"editors":[{"text":"Warwick, Peter D. 0000-0002-3152-7783 pwarwick@usgs.gov","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":762,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter","email":"pwarwick@usgs.gov","middleInitial":"D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":726457,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Karlsen, Alexander K.","contributorId":44089,"corporation":false,"usgs":false,"family":"Karlsen","given":"Alexander K.","affiliations":[],"preferred":false,"id":726458,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Merrill, Matthew D. 0000-0003-3766-847X mmerrill@usgs.gov","orcid":"https://orcid.org/0000-0003-3766-847X","contributorId":2584,"corporation":false,"usgs":true,"family":"Merrill","given":"Matthew 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W.","contributorId":26006,"corporation":false,"usgs":true,"family":"Hook","given":"Robert","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":716744,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Warwick, Peter D. 0000-0002-3152-7783 pwarwick@usgs.gov","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":762,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter","email":"pwarwick@usgs.gov","middleInitial":"D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":716745,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"SanFilipo, John R. 0000-0002-8739-5628 jsan@usgs.gov","orcid":"https://orcid.org/0000-0002-8739-5628","contributorId":2385,"corporation":false,"usgs":true,"family":"SanFilipo","given":"John R.","email":"jsan@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science 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Ironically, widespread use of nitrogen (N) has contaminated another vital resource: surficial fresh groundwater. Further, as nitrous oxide (N2O) is a potent greenhouse gas, anthropogenic manipulation of N budgets has ramifications that can extend far beyond national borders. To get a handle on the size of the problem, Puckett et al. present an approach to track historical contamination and thus analyze trends now and in the past with implications for the future.
Two bituminous coal zones, the San Pedro and the Santo Tomas, in the middle Eocene Claiborne Group of Webb County, south Texas (Figure 1), are among the coal resources that are not evaluated quantitatively as part of the current Gulf Coastal Plain coal resource assessment. Coal beds within these zones were mined by underground methods northwest of Laredo until 1939 and have been intermittently mined at the surface since 1979. These coals have long been regarded as unique within the Gulf Coast Tertiary coal-bearing section because they are high-volatile C bituminous in rank and because their physical characteristics resemble upper Carboniferous cannel coals of the Appalachians and Europe.
Discontinuous exposures of the Santo Tomas and the underlying San Pedro coal zone extend northwestward from Dolores for approximately 15 to 21 mi along the breaks of the Rio Grande and its tributaries in Webb County (Figure 1). This part of south Texas lies along the southwestern flank of the Rio Grande Embayment, which extends south and southeastwardly through the Mexican States of Coahuila, Nuevo León, and Tamaulipas (Figure 1). Within the embayment, the lower to middle part of the Claiborne Group consists of marine mudstones (Reklaw Formation) in the east and northeast and sandstones and mudstones (Bigford Formation) in the south and southwest (Figure 2). The marine mudstones coarsen upward into fluvial-deltaic sandstones (Queen City Sand) that prograded gulfward across eastern and central Texas (Guevara and Garcia, 1972). To the west and southwest, the interval overlying the Bigford Formation becomes less sandy, and claystones (El Pico Clay) predominate. Although the San Pedro coal zone has been placed traditionally near the top of the Bigford Formation and the Santo Tomas coal zone near the base of the El Pico Clay, recent work has failed to validate a mappable contact between these formations (Warwick and Hook, 1995). The coal beds dip northeast at less than 2 degrees towards the synclinal axis of the basin.
The following summary is based upon published and unpublished reports; drillhole records (geophysical logs, descriptions of cores and cuttings); coal-quality data obtained from the permit files of the Railroad Commission of Texas and recent sampling by the U.S. Geological Survey (USGS); a preliminary review of proprietary data acquired recently by the USGS; and field work conducted by the USGS since 1994. A total of approximately 200 drillhole records was examined.
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W.","contributorId":26006,"corporation":false,"usgs":true,"family":"Hook","given":"Robert","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":716731,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Warwick, Peter D. 0000-0002-3152-7783 pwarwick@usgs.gov","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":762,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter","email":"pwarwick@usgs.gov","middleInitial":"D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":716732,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70034489,"text":"70034489 - 2011 - Trophic connections in Lake Superior Part II: the nearshore fish community","interactions":[],"lastModifiedDate":"2012-12-26T16:34:52","indexId":"70034489","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Trophic connections in Lake Superior Part II: the nearshore fish community","docAbstract":"We use detailed diet analyses of the predominant planktivorous, benthivorous and piscivorous fish species from Lake Superior to create a nearshore (bathymetric depths < 80 m) fish community food web. The food web was based on analysis of 5125 fish stomachs collected seasonally (spring, summer, fall) from 9 nearshore sites in 2005. Based on mass of prey items, nearshore diets across all sites and seasons were similarly structured with a dominance of macroinvertebrates (Mysis diluviana and Diporeia spp). Although the piscivorous fishes like lean lake trout (Salvelinus namaycush) fed to a lesser extent on Diporeia and Mysis, they were still strongly connected to these macroinvertebrates, which were consumed by their primary prey species (sculpin spp., rainbow smelt Osmerus mordax, and coregonines). The addition of Bythotrephes to summer/fall cisco and lake whitefish diets, and the decrease in rainbow smelt in lean lake trout diets (replaced by coregonines) were the largest observed differences relative to historic Lake Superior diet studies. Although the offshore food web of Lake Superior was simpler than nearshore in terms of number of fish species present, the two areas had remarkably similar food web structures, and both fish communities were primarily supported by Mysis and Diporeia. We conclude that declines in Mysis or Diporeia populations would have a significant impact on energy flow in Lake Superior. The food web information we generated can be used to better identify management strategies for Lake Superior.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Great Lakes Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/j.jglr.2011.06.008","issn":"03801330","usgsCitation":"Gamble, A., Hrabik, T., Yule, D., and Stockwell, J., 2011, Trophic connections in Lake Superior Part II: the nearshore fish community: Journal of Great Lakes Research, v. 37, no. 3, p. 550-560, https://doi.org/10.1016/j.jglr.2011.06.008.","productDescription":"11 p.","startPage":"550","endPage":"560","costCenters":[{"id":358,"text":"Lake Superior Biological Station","active":false,"usgs":true}],"links":[{"id":215973,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jglr.2011.06.008"},{"id":243811,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Lake Superior","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -92.11,46.41 ], [ -92.11,48.88 ], [ -84.35,48.88 ], [ -84.35,46.41 ], [ -92.11,46.41 ] ] ] } } ] }","volume":"37","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb884e4b08c986b3278d6","contributors":{"authors":[{"text":"Gamble, A.E.","contributorId":43193,"corporation":false,"usgs":true,"family":"Gamble","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":446053,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hrabik, T.R.","contributorId":95250,"corporation":false,"usgs":true,"family":"Hrabik","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":446055,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yule, D.L.","contributorId":78853,"corporation":false,"usgs":true,"family":"Yule","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":446054,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stockwell, J.D.","contributorId":19678,"corporation":false,"usgs":true,"family":"Stockwell","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":446052,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035027,"text":"70035027 - 2011 - Evaluating the effect of predators on white-tailed deer: Movement and diet of coyotes","interactions":[],"lastModifiedDate":"2017-04-06T13:43:08","indexId":"70035027","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","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":"Evaluating the effect of predators on white-tailed deer: Movement and diet of coyotes","docAbstract":"Coyotes (Canis latrans) may affect adult and neonate white-tailed deer (Odocoileus virginianus) survival and have been implicated as a contributor to the decline of deer populations. Additionally, coyote diet composition is influenced by prey availability, season, and region. Because coyote movement and diet vary by region, local data are important to understand coyote population dynamics and their impact on prey species. In southeast Minnesota, we investigated the effect of coyotes on white-tailed deer populations by documenting movement rates, distances moved, and habitats searched by coyotes during fawning and nonfawning periods. Additionally, we determined survival, cause-specific mortality, and seasonal diet composition of coyotes. From 2001 to 2003, we captured and radiocollared 30 coyotes. Per-hour rate of movement averaged 0.87 km and was greater (P = 0.046) during the fawning (1.07 km) than the nonfawning period (0.80 km); areas searched were similar (P = 0.175) between seasons. Coyote habitat use differed during both seasons; habitats were not used in proportion to their availability (P < 0.001). Croplands were used more (P < 0.001) than their proportional availability during both seasons. Use of grasslands was greater during the fawning period (P = 0.030), whereas use of cropland was greater in the nonfawning period (P < 0.001). We collected 66 fecal samples during the nonfawning period; coyote diets were primarily composed of Microtus spp. (65.2%), and consumption of deer was 9.1%. During the study, 19 coyotes died; annual survival rate range was 0.33–0.41, which was low compared with other studies. Consumption of deer was low and coyotes searched open areas (i.e., cropland) more than fawning areas with dense cover. These factors in addition to high coyote mortality suggested that coyote predation was not likely limiting white-tailed deer populations in southeast Minnesota.
","language":"English","publisher":"Wiley","doi":"10.1002/jwmg.109","issn":"0022541X","usgsCitation":"Turner, M., Rockhill, A., Deperno, C., Jenks, J., Klaver, R., Jarding, A., Grovenburg, T., and Pollock, K.H., 2011, Evaluating the effect of predators on white-tailed deer: Movement and diet of coyotes: Journal of Wildlife Management, v. 75, no. 4, p. 905-912, https://doi.org/10.1002/jwmg.109.","productDescription":"8 p.","startPage":"905","endPage":"912","numberOfPages":"8","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":242853,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215081,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/jwmg.109"}],"volume":"75","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-05-25","publicationStatus":"PW","scienceBaseUri":"505a0bf7e4b0c8380cd52983","contributors":{"authors":[{"text":"Turner, M.M.","contributorId":26895,"corporation":false,"usgs":true,"family":"Turner","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":448943,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rockhill, A.P.","contributorId":70200,"corporation":false,"usgs":true,"family":"Rockhill","given":"A.P.","affiliations":[],"preferred":false,"id":448947,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Deperno, C.S.","contributorId":97870,"corporation":false,"usgs":true,"family":"Deperno","given":"C.S.","affiliations":[],"preferred":false,"id":448949,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jenks, J.A.","contributorId":31726,"corporation":false,"usgs":true,"family":"Jenks","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":448944,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"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":448945,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Jarding, A.R.","contributorId":108329,"corporation":false,"usgs":true,"family":"Jarding","given":"A.R.","affiliations":[],"preferred":false,"id":448950,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Grovenburg, T.W.","contributorId":78163,"corporation":false,"usgs":true,"family":"Grovenburg","given":"T.W.","affiliations":[],"preferred":false,"id":448948,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pollock, K. H.","contributorId":65184,"corporation":false,"usgs":false,"family":"Pollock","given":"K.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":448946,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70035656,"text":"70035656 - 2011 - Use of habitats by female mallards wintering in Southwestern Louisiana","interactions":[],"lastModifiedDate":"2012-03-12T17:21:39","indexId":"70035656","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Use of habitats by female mallards wintering in Southwestern Louisiana","docAbstract":"Habitat use by wintering Mallards (Anas platyrhychos) on the Gulf Coast Chenier Plain (GCCP) has received little study and quantitative data is needed for management of GCCP waterfowl. Radio-telemetry techniques were used to record habitats used by 135 female Mallards during winters 2004-2005 and 2005-2006 in south-western Louisiana. Habitat use was quantitatively estimated for areas open and closed to hunting, by general habitat types (i.e., marsh, rice, idle, pasture, or other), and for specific marsh types (i.e., freshwater, intermediate, brackish, or salt). Variation in these estimates was subsequently examined in relation to individual female, female age (adult or immature), winter (2004-2005 or 2005-2006), and hunt periods within winter (second hunting season [SHUNT] or post hunting season [POST]). Diurnal use of areas closed to hunting was greater during hunted time periods in winter 2005-2006 than in winter 2004-2005. Nocturnal use of areas closed to hunting was 3.1 times greater during SHUNT than during POST, and immatures used areas closed to hunting more than adults. Diurnal use of marsh was 3.3 times greater than that of any other habitat during both winters. Nocturnal use of marsh, rice, idle, and pasture were similar during both winters. Females used freshwater marsh habitats extensively (64.699.8% proportional use), whereas brackish and salt marsh combined was used less frequently (035.8% proportional use). These results suggest that freshwater marsh is important to Mallards and a high priority for restoration and management efforts.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Waterbirds","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1675/063.034.0405","issn":"15244695","usgsCitation":"Link, P.T., Afton, A., Cox, R.R., and Davis, B., 2011, Use of habitats by female mallards wintering in Southwestern Louisiana: Waterbirds, v. 34, no. 4, p. 429-438, https://doi.org/10.1675/063.034.0405.","startPage":"429","endPage":"438","numberOfPages":"10","costCenters":[],"links":[{"id":216045,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/063.034.0405"},{"id":243885,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbf1fe4b08c986b32997d","contributors":{"authors":[{"text":"Link, Paul T.","contributorId":53611,"corporation":false,"usgs":false,"family":"Link","given":"Paul","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":451696,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Afton, A. D.","contributorId":83467,"corporation":false,"usgs":true,"family":"Afton","given":"A. D.","affiliations":[],"preferred":false,"id":451698,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cox, R. R. Jr.","contributorId":57006,"corporation":false,"usgs":true,"family":"Cox","given":"R.","suffix":"Jr.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":451697,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Davis, B.E.","contributorId":101467,"corporation":false,"usgs":true,"family":"Davis","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":451699,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035026,"text":"70035026 - 2011 - Late Quaternary environmental change inferred from phytoliths and other soil-related proxies: Case studies from the central and southern Great Plains, USA","interactions":[],"lastModifiedDate":"2021-03-04T14:28:18.184017","indexId":"70035026","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1198,"text":"Catena","active":true,"publicationSubtype":{"id":10}},"title":"Late Quaternary environmental change inferred from phytoliths and other soil-related proxies: Case studies from the central and southern Great Plains, USA","docAbstract":"This study investigates stable carbon isotopes (δ13C), opal phytolith assemblages, burnt phytoliths, microscopic charcoal and Sporormiella spores from modern soils and paleosols in Kansas and Oklahoma. Grass and dicot phytoliths in combination with δ13C are used as proxies for reconstructing the structure of grasslands and woodlands. Burnt grass phytoliths and microscopic charcoal are evaluated as proxies for reconstructing paleofire incidence. Concentrations of the fungal spore Sporormiella are used as a proxy for assessing large herbivore activity. These proxies were tested on various modern grassland communities of the central and southern Great Plains, including areas with bison, cattle, and small herbivores, and areas under different fire frequencies.
Opal phytolith assemblages and δ13C values show that before cal 11 ka, C3 grasses and woody plants predominated in areas that today are dominated by C4 grasses. The origin of the shortgrass prairie dates back to about cal 10 ka. The origin of the tallgrass prairie, however, is not clear as phytolith data show variable assemblages throughout the Holocene (mixed-grass, tallgrass, and tallgrass–woodland mosaic). Different proxies (burnt phytoliths vs. charcoal) reveal different fire frequencies, but it is apparent that microfossil evidence for fire incidence is closely related to the abundance of woody plants in the landscape.
Before cal 12 ka, soils show somewhat elevated concentration of Sporormiella, but lower concentrations than the modern high-density bison and cattle grazing areas. Throughout the Holocene, Sporormiella frequencies are low, which suggests lower large ungulate densities and perhaps high mobility.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.catena.2010.08.015","issn":"03418162","usgsCitation":"Cordova, C., Johnson, W., Mandel, R., and Palmer, M., 2011, Late Quaternary environmental change inferred from phytoliths and other soil-related proxies: Case studies from the central and southern Great Plains, USA: Catena, v. 85, no. 2, p. 87-108, https://doi.org/10.1016/j.catena.2010.08.015.","productDescription":"22 p.","startPage":"87","endPage":"108","costCenters":[],"links":[{"id":242852,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado, Kansas, New Mexico, Oklahoma, Texas","otherGeospatial":"Central and southern Great Plains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -107.05078125,\n 31.728167146023935\n ],\n [\n -104.94140625,\n 30.90222470517144\n ],\n [\n -103.53515625,\n 29.152161283318915\n ],\n [\n -101.689453125,\n 29.916852233070173\n ],\n [\n -97.822265625,\n 25.799891182088334\n ],\n [\n -97.20703125,\n 27.527758206861886\n ],\n [\n -93.33984375,\n 29.916852233070173\n ],\n [\n -93.955078125,\n 32.69486597787505\n ],\n [\n -94.5703125,\n 35.460669951495305\n ],\n [\n -94.74609375,\n 39.436192999314095\n ],\n [\n -95.25146484374999,\n 40.06125658140474\n ],\n [\n -102.216796875,\n 40.17887331434696\n ],\n [\n -102.3046875,\n 41.11246878918088\n ],\n [\n -109.3359375,\n 40.97989806962013\n ],\n [\n -109.16015624999999,\n 31.27855085894653\n ],\n [\n -107.9296875,\n 31.27855085894653\n ],\n [\n -107.841796875,\n 31.80289258670676\n ],\n [\n -107.05078125,\n 31.728167146023935\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"85","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4526e4b0c8380cd67098","contributors":{"authors":[{"text":"Cordova, C.E.","contributorId":8303,"corporation":false,"usgs":true,"family":"Cordova","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":448939,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, W.C.","contributorId":68003,"corporation":false,"usgs":true,"family":"Johnson","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":448941,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mandel, R.D.","contributorId":58000,"corporation":false,"usgs":true,"family":"Mandel","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":448940,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Palmer, M.W.","contributorId":88703,"corporation":false,"usgs":true,"family":"Palmer","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":448942,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035025,"text":"70035025 - 2011 - Multimodel inference and adaptive management","interactions":[],"lastModifiedDate":"2018-01-12T12:07:22","indexId":"70035025","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2258,"text":"Journal of Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"Multimodel inference and adaptive management","docAbstract":"Ecology is an inherently complex science coping with correlated variables, nonlinear interactions and multiple scales of pattern and process, making it difficult for experiments to result in clear, strong inference. Natural resource managers, policy makers, and stakeholders rely on science to provide timely and accurate management recommendations. However, the time necessary to untangle the complexities of interactions within ecosystems is often far greater than the time available to make management decisions. One method of coping with this problem is multimodel inference. Multimodel inference assesses uncertainty by calculating likelihoods among multiple competing hypotheses, but multimodel inference results are often equivocal. Despite this, there may be pressure for ecologists to provide management recommendations regardless of the strength of their study’s inference. We reviewed papers in the Journal of Wildlife Management (JWM) and the journal Conservation Biology (CB) to quantify the prevalence of multimodel inference approaches, the resulting inference (weak versus strong), and how authors dealt with the uncertainty. Thirty-eight percent and 14%, respectively, of articles in the JWM and CB used multimodel inference approaches. Strong inference was rarely observed, with only 7% of JWM and 20% of CB articles resulting in strong inference. We found the majority of weak inference papers in both journals (59%) gave specific management recommendations. Model selection uncertainty was ignored in most recommendations for management. We suggest that adaptive management is an ideal method to resolve uncertainty when research results in weak inference.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jenvman.2010.10.012","issn":"03014797","usgsCitation":"Rehme, S., Powell, L., and Allen, C.R., 2011, Multimodel inference and adaptive management: Journal of Environmental Management, v. 92, no. 5, p. 1360-1364, https://doi.org/10.1016/j.jenvman.2010.10.012.","startPage":"1360","endPage":"1364","numberOfPages":"5","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-021299","costCenters":[],"links":[{"id":215535,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jenvman.2010.10.012"},{"id":243346,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6031e4b0c8380cd71363","contributors":{"authors":[{"text":"Rehme, S.E.","contributorId":9890,"corporation":false,"usgs":true,"family":"Rehme","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":448936,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, L.A.","contributorId":51262,"corporation":false,"usgs":true,"family":"Powell","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":448937,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Allen, Craig R. 0000-0001-8655-8272 allencr@usgs.gov","orcid":"https://orcid.org/0000-0001-8655-8272","contributorId":1979,"corporation":false,"usgs":true,"family":"Allen","given":"Craig","email":"allencr@usgs.gov","middleInitial":"R.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":448938,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035655,"text":"70035655 - 2011 - Making United States Integrated Ocean Observing System (U.S. IOOS) inclusive of marine biological resources","interactions":[],"lastModifiedDate":"2021-02-17T19:59:38.150286","indexId":"70035655","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Making United States Integrated Ocean Observing System (U.S. IOOS) inclusive of marine biological resources","docAbstract":"An important Data Management and Communication (DMAC) goal is to enable a multi-disciplinary view of the ocean environment by facilitating discovery and integration of data from various sources, projects and scientific domains. United States Integrated Ocean Observing System (U.S. IOOS) DMAC functional requirements are based upon guidelines for standardized data access services, data formats, metadata, controlled vocabularies, and other conventions. So far, the data integration effort has focused on geophysical U.S. IOOS core variables such as temperature, salinity, ocean currents, etc. The IOOS Biological Observations Project is addressing the DMAC requirements that pertain to biological observations standards and interoperability applicable to U.S. IOOS and to various observing systems. Biological observations are highly heterogeneous and the variety of formats, logical structures, and sampling methods create significant challenges. Here we describe an informatics framework for biological observing data (e.g. species presence/absence and abundance data) that will expand information content and reconcile standards for the representation and integration of these biological observations for users to maximize the value of these observing data. We further propose that the approach described can be applied to other datasets generated in scientific observing surveys and will provide a vehicle for wider dissemination of biological observing data. We propose to employ data definition conventions that are well understood in U.S. IOOS and to combine these with ratified terminologies, policies and guidelines.
","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"OCEANS'11 - MTS/IEEE Kona, Program Book","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"MTS/IEEE Kona Conference, OCEANS'11","conferenceDate":"September 19-21, 2011","conferenceLocation":"Kona, HI","language":"English","publisher":"IEEE","doi":"10.23919/OCEANS.2011.6106922","isbn":"9781457714276","usgsCitation":"Moustahfid, H., Potemra, J., Goldstein, P., Mendelssohn, R., and Desrochers, A., 2011, Making United States Integrated Ocean Observing System (U.S. IOOS) inclusive of marine biological resources, in OCEANS'11 - MTS/IEEE Kona, Program Book, Kona, HI, September 19-21, 2011, 9 p., https://doi.org/10.23919/OCEANS.2011.6106922.","productDescription":"9 p.","costCenters":[],"links":[{"id":243884,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4c34e4b0c8380cd69aaa","contributors":{"authors":[{"text":"Moustahfid, H.","contributorId":10636,"corporation":false,"usgs":true,"family":"Moustahfid","given":"H.","affiliations":[],"preferred":false,"id":451691,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Potemra, J.","contributorId":92076,"corporation":false,"usgs":true,"family":"Potemra","given":"J.","email":"","affiliations":[],"preferred":false,"id":451694,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goldstein, P.","contributorId":101110,"corporation":false,"usgs":true,"family":"Goldstein","given":"P.","email":"","affiliations":[],"preferred":false,"id":451695,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mendelssohn, R.","contributorId":80924,"corporation":false,"usgs":true,"family":"Mendelssohn","given":"R.","email":"","affiliations":[],"preferred":false,"id":451693,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Desrochers, A.","contributorId":66820,"corporation":false,"usgs":false,"family":"Desrochers","given":"A.","email":"","affiliations":[],"preferred":false,"id":451692,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70035211,"text":"70035211 - 2011 - In vitro detection and quantification of botulinum neurotoxin type E activity in avian blood","interactions":[],"lastModifiedDate":"2022-04-06T16:06:09.833087","indexId":"70035211","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":850,"text":"Applied and Environmental Microbiology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"In vitro detection and quantification of botulinum neurotoxin type E activity in avian blood","title":"In vitro detection and quantification of botulinum neurotoxin type E activity in avian blood","docAbstract":"Botulinum neurotoxin serotype E (BoNT/E) outbreaks in the Great Lakes region cause large annual avian mortality events, with an estimated 17,000 bird deaths reported in 2007 alone. During an outbreak investigation, blood collected from bird carcasses is tested for the presence of BoNT/E using the mouse lethality assay. While sensitive, this method is labor-intensive and low throughput and can take up to 7 days to complete. We developed a rapid and sensitive in vitro assay, the BoTest Matrix E assay, that combines immunoprecipitation with high-affinity endopeptidase activity detection by Förster resonance energy transfer (FRET) to rapidly quantify BoNT/E activity in avian blood with detection limits comparable to those of the mouse lethality assay. On the basis of the analysis of archived blood samples (n = 87) collected from bird carcasses during avian mortality investigations, BoTest Matrix E detected picomolar quantities of BoNT/E following a 2-h incubation and femtomolar quantities of BoNT/E following extended incubation (24 h) with 100% diagnostic specificity and 91% diagnostic sensitivity.
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D.","contributorId":118368,"corporation":false,"usgs":true,"family":"Samuel","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":449748,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Tucker, Ward C.","contributorId":26915,"corporation":false,"usgs":true,"family":"Tucker","given":"Ward","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":449751,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70034284,"text":"70034284 - 2011 - The remarkable occurrence of large rainfall-induced debris flows at two different locations on July 12, 2008, Southern Sierra Nevada, CA, USA","interactions":[],"lastModifiedDate":"2021-04-26T15:01:50.692922","indexId":"70034284","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2604,"text":"Landslides","active":true,"publicationSubtype":{"id":10}},"title":"The remarkable occurrence of large rainfall-induced debris flows at two different locations on July 12, 2008, Southern Sierra Nevada, CA, USA","docAbstract":"On July 12, 2008, two convective cells about 155 km apart produced a brief period of intense rainfall triggering large debris flows in the southern Sierra Nevada. The northernmost cell was centered over Oak Creek Canyon, an east-flowing drainage, and its tributaries near Independence, CA, USA. About 5:00 P.M., debris flows passed down the South Fork and North Fork of Oak Creek to merge into a large single feature whose passage affected the historic Mt. Whitney Fish hatchery and blocked California State Highway 395. At about the same time, the southernmost cell was largely centered over Erskine Creek, a main tributary of the west-flowing Kern River. Debris flows issued from several branches to coalesce into a large debris flow that passed along Erskine Creek, through the town of Lake Isabella, CA, USA and into the Kern River. It was observed reaching Lake Isabella about 6:30 P.M. Both debris flows caused significant disruption and damage to local communities.
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capture","interactions":[],"lastModifiedDate":"2021-04-26T15:22:40.958425","indexId":"70034281","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1043,"text":"Bioresource Technology","active":true,"publicationSubtype":{"id":10}},"title":"Activity and stability of immobilized carbonic anhydrase for promoting CO2 absorption into a carbonate solution for post-combustion CO2 capture","docAbstract":"An Integrated Vacuum Carbonate Absorption Process (IVCAP) currently under development could significantly reduce the energy consumed when capturing CO2 from the flue gases of coal-fired power plants. The biocatalyst carbonic anhydrase (CA) has been found to effectively promote the absorption of CO2 into the potassium carbonate solution that would be used in the IVCAP. Two CA enzymes were immobilized onto three selected support materials having different pore structures. The thermal stability of the immobilized CA enzymes was significantly greater than their free counterparts. For example, the immobilized enzymes retained at least 60% of their initial activities after 90 days at 50 °C compared to about 30% for their free counterparts under the same conditions. The immobilized CA also had significantly improved resistance to concentrations of sulfate (0.4 M), nitrate (0.05 M) and chloride (0.3 M) typically found in flue gas scrubbing liquids than their free counterparts.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.biortech.2011.09.043","issn":"09608524","usgsCitation":"Zhang, S., Zhang, Z., Lu, Y., Rostam-Abadi, M., and Jones, A., 2011, Activity and stability of immobilized carbonic anhydrase for promoting CO2 absorption into a carbonate solution for post-combustion CO2 capture: Bioresource Technology, v. 102, no. 22, p. 10194-10201, https://doi.org/10.1016/j.biortech.2011.09.043.","productDescription":"8 p.","startPage":"10194","endPage":"10201","costCenters":[],"links":[{"id":244522,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216640,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biortech.2011.09.043"}],"volume":"102","issue":"22","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e6cee4b0c8380cd47635","contributors":{"authors":[{"text":"Zhang, S.","contributorId":51064,"corporation":false,"usgs":true,"family":"Zhang","given":"S.","email":"","affiliations":[],"preferred":false,"id":445062,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zhang, Z.","contributorId":47505,"corporation":false,"usgs":true,"family":"Zhang","given":"Z.","email":"","affiliations":[],"preferred":false,"id":445061,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lu, Y.","contributorId":40183,"corporation":false,"usgs":true,"family":"Lu","given":"Y.","affiliations":[],"preferred":false,"id":445060,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rostam-Abadi, M.","contributorId":37061,"corporation":false,"usgs":true,"family":"Rostam-Abadi","given":"M.","affiliations":[],"preferred":false,"id":445059,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jones, A.","contributorId":18934,"corporation":false,"usgs":true,"family":"Jones","given":"A.","affiliations":[],"preferred":false,"id":445058,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70034280,"text":"70034280 - 2011 - Estimating Hydraulic Parameters When Poroelastic Effects Are Significant","interactions":[],"lastModifiedDate":"2012-03-12T17:21:47","indexId":"70034280","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Estimating Hydraulic Parameters When Poroelastic Effects Are Significant","docAbstract":"For almost 80 years, deformation-induced head changes caused by poroelastic effects have been observed during pumping tests in multilayered aquifer-aquitard systems. As water in the aquifer is released from compressive storage during pumping, the aquifer is deformed both in the horizontal and vertical directions. This deformation in the pumped aquifer causes deformation in the adjacent layers, resulting in changes in pore pressure that may produce drawdown curves that differ significantly from those predicted by traditional groundwater theory. Although these deformation-induced head changes have been analyzed in several studies by poroelasticity theory, there are at present no practical guidelines for the interpretation of pumping test data influenced by these effects. To investigate the impact that poroelastic effects during pumping tests have on the estimation of hydraulic parameters, we generate synthetic data for three different aquifer-aquitard settings using a poroelasticity model, and then analyze the synthetic data using type curves and parameter estimation techniques, both of which are based on traditional groundwater theory and do not account for poroelastic effects. Results show that even when poroelastic effects result in significant deformation-induced head changes, it is possible to obtain reasonable estimates of hydraulic parameters using methods based on traditional groundwater theory, as long as pumping is sufficiently long so that deformation-induced effects have largely dissipated. ?? 2011 The Author(s). Journal compilation ?? 2011 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2010.00781.x","issn":"0017467X","usgsCitation":"Berg, S., Hsieh, P.A., and Illman, W., 2011, Estimating Hydraulic Parameters When Poroelastic Effects Are Significant: Ground Water, v. 49, no. 6, p. 815-829, https://doi.org/10.1111/j.1745-6584.2010.00781.x.","startPage":"815","endPage":"829","numberOfPages":"15","costCenters":[],"links":[{"id":216612,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2010.00781.x"},{"id":244493,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-01-04","publicationStatus":"PW","scienceBaseUri":"505a0affe4b0c8380cd524fb","contributors":{"authors":[{"text":"Berg, S.J.","contributorId":61671,"corporation":false,"usgs":true,"family":"Berg","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":445057,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hsieh, P. A.","contributorId":40596,"corporation":false,"usgs":true,"family":"Hsieh","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":445055,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Illman, W.A.","contributorId":53195,"corporation":false,"usgs":true,"family":"Illman","given":"W.A.","email":"","affiliations":[],"preferred":false,"id":445056,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035651,"text":"70035651 - 2011 - New insights of tsunami hazard from the 2011 Tohoku-oki event","interactions":[],"lastModifiedDate":"2021-02-17T20:33:46.421598","indexId":"70035651","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"New insights of tsunami hazard from the 2011 Tohoku-oki event","docAbstract":"We report initial results from our recent field survey documenting the inundation and resultant deposits of the 2011 Tohoku-oki tsunami from Sendai Plain, Japan. The tsunami inundated up to 4.5 km inland but the > 0.5 cm-thick sand deposit extended only 2.8 km (62% of the inundation distance). The deposit however continued as a mud layer to the inundation limit. The mud deposit contained high concentrations of water-leachable chloride and we conclude that geochemical markers and microfossil data may prove to be useful in identifying the maximum inundation limit of paleotsunamis that could extend well beyond any preserved sand layer. Our newly acquired data on the 2011 event suggest that previous estimates of paleotsunamis (e.g. 869 AD Jōgan earthquake and tsunami) in this area have probably been underestimated. If the 2011 and 869 AD events are indeed comparable, the risk from these natural hazards in Japan is much greater than previously recognized.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.margeo.2011.10.004","issn":"00253227","usgsCitation":"Goto, K., Chague-Goff, C., Fujino, S., Goff, J., Jaffe, B., Nishimura, Y., Richmond, B.M., Sugawara, D., Szczucinski, W., Tappin, D., Witter, R., and Yulianto, E., 2011, New insights of tsunami hazard from the 2011 Tohoku-oki event: Marine Geology, v. 290, no. 1-4, p. 46-50, https://doi.org/10.1016/j.margeo.2011.10.004.","productDescription":"5 p.","startPage":"46","endPage":"50","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":244294,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216424,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.margeo.2011.10.004"}],"country":"Japan","otherGeospatial":"Sendai Plain","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 140.679931640625,\n 38.013476231041935\n ],\n [\n 141.1248779296875,\n 38.013476231041935\n ],\n [\n 141.1248779296875,\n 38.42024233971636\n ],\n [\n 140.679931640625,\n 38.42024233971636\n ],\n [\n 140.679931640625,\n 38.013476231041935\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"290","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a65dde4b0c8380cd72c74","contributors":{"authors":[{"text":"Goto, K.","contributorId":20568,"corporation":false,"usgs":true,"family":"Goto","given":"K.","email":"","affiliations":[],"preferred":false,"id":451628,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chague-Goff, C.","contributorId":59651,"corporation":false,"usgs":true,"family":"Chague-Goff","given":"C.","affiliations":[],"preferred":false,"id":451633,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fujino, S.","contributorId":35155,"corporation":false,"usgs":true,"family":"Fujino","given":"S.","email":"","affiliations":[],"preferred":false,"id":451629,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goff, J.","contributorId":50730,"corporation":false,"usgs":true,"family":"Goff","given":"J.","email":"","affiliations":[],"preferred":false,"id":451631,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jaffe, Bruce","contributorId":203445,"corporation":false,"usgs":true,"family":"Jaffe","given":"Bruce","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":451637,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nishimura, Y.","contributorId":58442,"corporation":false,"usgs":true,"family":"Nishimura","given":"Y.","email":"","affiliations":[],"preferred":false,"id":451632,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Richmond, Bruce M. 0000-0002-0056-5832 brichmond@usgs.gov","orcid":"https://orcid.org/0000-0002-0056-5832","contributorId":2459,"corporation":false,"usgs":true,"family":"Richmond","given":"Bruce","email":"brichmond@usgs.gov","middleInitial":"M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":451635,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Sugawara, D.","contributorId":78169,"corporation":false,"usgs":true,"family":"Sugawara","given":"D.","affiliations":[],"preferred":false,"id":451636,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Szczucinski, Witold","contributorId":76572,"corporation":false,"usgs":false,"family":"Szczucinski","given":"Witold","email":"","affiliations":[],"preferred":false,"id":451634,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Tappin, D.R.","contributorId":104306,"corporation":false,"usgs":true,"family":"Tappin","given":"D.R.","affiliations":[],"preferred":false,"id":451639,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Witter, Robert C. 0000-0002-1721-254X rwitter@usgs.gov","orcid":"https://orcid.org/0000-0002-1721-254X","contributorId":4528,"corporation":false,"usgs":true,"family":"Witter","given":"Robert C.","email":"rwitter@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":451630,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Yulianto, E.","contributorId":94871,"corporation":false,"usgs":true,"family":"Yulianto","given":"E.","email":"","affiliations":[],"preferred":false,"id":451638,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}} ,{"id":70035650,"text":"70035650 - 2011 - An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan","interactions":[],"lastModifiedDate":"2021-08-23T16:24:38.902248","indexId":"70035650","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2832,"text":"Natural Resources Research","onlineIssn":"1573-8981","printIssn":"1520-7439","active":true,"publicationSubtype":{"id":10}},"title":"An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan","docAbstract":"The Haji-Gak iron deposit of eastern Bamyan Province, eastern Afghanistan, was studied extensively and resource calculations were made in the 1960s by Afghan and Russian geologists. Recalculation of the resource estimates verifies the original estimates for categories A (in-place resources known in detail), B (in-place resources known in moderate detail), and C1 (in-place resources estimated on sparse data), totaling 110.8 Mt, or about 6% of the resources as being supportable for the methods used in the 1960s. C2 (based on a loose exploration grid with little data) resources are based on one ore grade from one drill hole, and P2 (prognosis) resources are based on field observations, field measurements, and an ore grade derived from averaging grades from three better sampled ore bodies. C2 and P2 resources are 1,659.1 Mt or about 94% of the total resources in the deposit. The vast P2 resources have not been drilled or sampled to confirm their extent or quality. The purpose of this article is to independently evaluate the resources of the Haji-Gak iron deposit by using the available geologic and mineral resource information including geologic maps and cross sections, sampling data, and the analog-estimating techniques of the 1960s to determine the size and tenor of the deposit.
","largerWorkTitle":"Natural Resources Research","language":"English","publisher":"Springer Link","doi":"10.1007/s11053-011-9154-0","issn":"15207439","usgsCitation":"Sutphin, D., Renaud, K., and Drew, L., 2011, An Analysis of the Published Mineral Resource Estimates of the Haji-Gak Iron Deposit, Afghanistan: Natural Resources Research, v. 20, no. 4, p. 329-353, https://doi.org/10.1007/s11053-011-9154-0.","productDescription":"25 p.","startPage":"329","endPage":"353","costCenters":[],"links":[{"id":244266,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216399,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11053-011-9154-0"}],"country":"Afghanistan","otherGeospatial":"Haji-Gak iron deposit in Eastern Afghanistan","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 67.91748046874999,\n 34.00713506435885\n ],\n [\n 69.3511962890625,\n 34.00713506435885\n ],\n [\n 69.3511962890625,\n 35.250105158539355\n ],\n [\n 67.91748046874999,\n 35.250105158539355\n ],\n [\n 67.91748046874999,\n 34.00713506435885\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"20","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-10-18","publicationStatus":"PW","scienceBaseUri":"5059e9d0e4b0c8380cd48491","contributors":{"authors":[{"text":"Sutphin, David M.","contributorId":53769,"corporation":false,"usgs":true,"family":"Sutphin","given":"David M.","affiliations":[],"preferred":false,"id":451625,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Renaud, Karine krenaud@usgs.gov","contributorId":195405,"corporation":false,"usgs":true,"family":"Renaud","given":"Karine","email":"krenaud@usgs.gov","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":451626,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Drew, Lawrence J. ldrew@usgs.gov","contributorId":190730,"corporation":false,"usgs":true,"family":"Drew","given":"Lawrence J.","email":"ldrew@usgs.gov","affiliations":[],"preferred":false,"id":451627,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70034276,"text":"70034276 - 2011 - Adverse foraging conditions may impact body mass and survival of a high Arctic seabird","interactions":[],"lastModifiedDate":"2018-08-20T19:18:00","indexId":"70034276","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2932,"text":"Oecologia","active":true,"publicationSubtype":{"id":10}},"title":"Adverse foraging conditions may impact body mass and survival of a high Arctic seabird","docAbstract":"Tradeoffs between current reproduction and future survival are widely recognized, but may only occur when food is limited: when foraging conditions are favorable, parents may be able to reproduce without compromising their own survival. We investigated these tradeoffs in the little auk (Alle alle), a small seabird with a single-egg clutch. During 2005-2007, we examined the relationship between body mass and survival of birds breeding under contrasting foraging conditions at two Arctic colonies. We used corticosterone levels of breeding adults as a physiological indicator of the foraging conditions they encountered during each reproductive season. We found that when foraging conditions were relatively poor (as reflected in elevated levels of corticosterone), parents ended the reproductive season with low body mass and suffered increased post-breeding mortality. A positive relationship between body mass and post-breeding survival was found in one study year; light birds incurred higher survival costs than heavy birds. The results of this study suggest that reproducing under poor foraging conditions may affect the post-breeding survival of long-lived little auks. They also have important demographic implications because even a small change in adult survival may have a large effect on populations of long-lived species. ?? 2011 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Oecologia","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00442-011-1971-7","issn":"00298549","usgsCitation":"Harding, A., Welcker, J., Steen, H., Hamer, K.C., Kitaysky, A.S., Fort, J., Talbot, S.L., Cornick, L.A., Karnovsky, N.J., Gabrielsen, G.W., and Gremillet, D., 2011, Adverse foraging conditions may impact body mass and survival of a high Arctic seabird: Oecologia, v. 167, no. 1, p. 49-59, https://doi.org/10.1007/s00442-011-1971-7.","startPage":"49","endPage":"59","numberOfPages":"11","costCenters":[],"links":[{"id":244433,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216555,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00442-011-1971-7"}],"volume":"167","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-03-29","publicationStatus":"PW","scienceBaseUri":"5059e70ce4b0c8380cd477fb","contributors":{"authors":[{"text":"Harding, Ann","contributorId":172489,"corporation":false,"usgs":false,"family":"Harding","given":"Ann","email":"","affiliations":[],"preferred":false,"id":445040,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Welcker, Jorg","contributorId":25441,"corporation":false,"usgs":true,"family":"Welcker","given":"Jorg","email":"","affiliations":[],"preferred":false,"id":445038,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Steen, Harald","contributorId":190710,"corporation":false,"usgs":false,"family":"Steen","given":"Harald","email":"","affiliations":[],"preferred":false,"id":445039,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hamer, Keith C.","contributorId":51960,"corporation":false,"usgs":false,"family":"Hamer","given":"Keith","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":445044,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kitaysky, Alexander S.","contributorId":13884,"corporation":false,"usgs":true,"family":"Kitaysky","given":"Alexander","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":445048,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fort, Jerome","contributorId":23344,"corporation":false,"usgs":false,"family":"Fort","given":"Jerome","email":"","affiliations":[],"preferred":false,"id":445046,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@usgs.gov","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":445042,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Cornick, Leslie A.","contributorId":100647,"corporation":false,"usgs":false,"family":"Cornick","given":"Leslie","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":445047,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Karnovsky, Nina J.","contributorId":42806,"corporation":false,"usgs":false,"family":"Karnovsky","given":"Nina","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":445043,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Gabrielsen, Geir W.","contributorId":57688,"corporation":false,"usgs":false,"family":"Gabrielsen","given":"Geir","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":445045,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Gremillet, David","contributorId":204558,"corporation":false,"usgs":false,"family":"Gremillet","given":"David","email":"","affiliations":[],"preferred":false,"id":445041,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70035649,"text":"70035649 - 2011 - Effects of reduction in porosity and permeability with depth on storage capacity and injectivity in deep saline aquifers: A case study from the Mount Simon Sandstone aquifer","interactions":[],"lastModifiedDate":"2021-02-17T21:12:22.416992","indexId":"70035649","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2049,"text":"International Journal of Greenhouse Gas Control","active":true,"publicationSubtype":{"id":10}},"title":"Effects of reduction in porosity and permeability with depth on storage capacity and injectivity in deep saline aquifers: A case study from the Mount Simon Sandstone aquifer","docAbstract":"The Upper Cambrian Mount Simon Sandstone is recognized as a deep saline reservoir that has significant potential for geological sequestration in the Midwestern region of the United States. Porosity and permeability values collected from core analyses in rocks from this formation and its lateral equivalents in Indiana, Kentucky, Michigan, and Ohio indicate a predictable relationship with depth owing to a reduction in the pore structure due to the effects of compaction and/or cementation, primarily as quartz overgrowths. The regional trend of decreasing porosity with depth is described by the equation: ϕ(d) = 16.36 × e−0.00039*d, where ϕ is the porosity and d is the depth in m. The decrease of porosity with depth generally holds true on a basinwide scale. Bearing in mind local variations in lithologic and petrophysical character within the Mount Simon Sandstone, the source data that were used to predict porosity were utilized to estimate the pore volume available within the reservoir that could potentially serve as storage space for injected CO2. The potential storage capacity estimated for the Mount Simon Sandstone in the study area, using efficiency factors of 1%, 5%, 10%, and 15%, is 23,680, 118,418, 236,832, and 355,242 million metric tons of CO2, respectively.
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Aquifer geochemistry was characterized at three field sites (SH, HF, TYS) in Hangjinhouqi County of northwestern Hetao Basin. The results of bulk geochemistry analysis of sediment samples indicated that total As concentrations have a range of 6. 8-58. 5 mg/kg, with a median of 14. 4 mg/kg. The highest As concentrations were found at 15-25 m depth. In the meanwhile, the range of As concentration in the sediments from background borehole is 3-21. 8 mg/kg, with a median value of 9 mg/kg. The As sediments concentrations with depth from the SH borehole were correlated with the contents of Fe, Sb, B, V, total C and total S. Generally, the abundance of elements varied with grain size, with higher concentrations in finer fractions of the sediments. Distinct lithology profile and different geochemical characteristics of aquifer sediments indicate the sediments are associated with different sources and diverse sedimentary environments. Up to one third of arsenic in the sediments could be extracted by ammonium oxalate, suggesting that Fe oxyhydroxides may be the major sink of As in the aquifer. Sequential extraction results indicate that arsenic occurs as strongly adsorbed on and/or co-precipitated with amorphous Fe oxyhydroxides in sediments accounting for 35 and 20%, respectively, of the total contents of arsenic. The release of As into groundwater may occur by desorption from the mineral surface driven by reductive dissolution of the Fe oxide minerals. Furthermore, small proportions of As associated with iron sulfides occur in the reductive sediments. ?? 2011 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Earth Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s12665-011-1020-1","issn":"18666280","usgsCitation":"Deng, Y., Wang, Y., Ma, T., Yang, H., and He, J., 2011, Arsenic associations in sediments from shallow aquifers of northwestern Hetao Basin, Inner Mongolia: Environmental Earth Sciences, v. 64, no. 8, p. 2001-2011, https://doi.org/10.1007/s12665-011-1020-1.","startPage":"2001","endPage":"2011","numberOfPages":"11","costCenters":[],"links":[{"id":216523,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s12665-011-1020-1"},{"id":244400,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"64","issue":"8","noUsgsAuthors":false,"publicationDate":"2011-03-26","publicationStatus":"PW","scienceBaseUri":"5059ed8ae4b0c8380cd4987f","contributors":{"authors":[{"text":"Deng, Y.","contributorId":57686,"corporation":false,"usgs":true,"family":"Deng","given":"Y.","email":"","affiliations":[],"preferred":false,"id":445030,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wang, Y.","contributorId":64213,"corporation":false,"usgs":true,"family":"Wang","given":"Y.","affiliations":[],"preferred":false,"id":445031,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ma, T.","contributorId":33870,"corporation":false,"usgs":true,"family":"Ma","given":"T.","email":"","affiliations":[],"preferred":false,"id":445028,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yang, H.","contributorId":48385,"corporation":false,"usgs":true,"family":"Yang","given":"H.","email":"","affiliations":[],"preferred":false,"id":445029,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"He, J.","contributorId":95993,"corporation":false,"usgs":true,"family":"He","given":"J.","email":"","affiliations":[],"preferred":false,"id":445032,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70034273,"text":"70034273 - 2011 - Native Americans, regional drought and tree Island evolution in the Florida Everglades","interactions":[],"lastModifiedDate":"2013-03-17T11:22:00","indexId":"70034273","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1905,"text":"Holocene","active":true,"publicationSubtype":{"id":10}},"title":"Native Americans, regional drought and tree Island evolution in the Florida Everglades","docAbstract":"This study uses palynologic data to determine the effects of regional climate variability and human activity on the formation and development of tree islands during the last ~4000 years. Although prolonged periods of aridity have been invoked as one mechanism for their formation, Native American land use has also been hypothesized as a driver of tree island development. Using pollen assemblages from head and near tail sediments collected on two tree islands and documented archeological data, the relative roles of Native Americans, climate variability, and recent water-management practices in forming and structuring Everglades tree islands are examined. The timing of changes recorded in the pollen record indicates that tree islands developed from sawgrass marshes ~3800 cal. yr BP, prior to human occupation. Major tree island expansion, recorded near tail sediments, occurred ~1000 years after initial tree island formation. Comparison of the timing of pollen assemblages with other proxy records indicates that tree island expansion is related to regional and global aridity correlated with southward migration of the Intertropical Convergence Zone. Local fire associated with droughts may also have influenced tree island expansion. This work suggests that Native American occupation did not significantly influence tree island formation and that the most important factors governing tree island expansion are extreme hydrologic events due to droughts and intense twentieth century water management.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Holocene","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"SAGE Publications","publisherLocation":"Thousand Oaks, CA","doi":"10.1177/0959683611400204","issn":"09596836","usgsCitation":"Bernhardt, C., 2011, Native Americans, regional drought and tree Island evolution in the Florida Everglades: Holocene, v. 21, no. 6, p. 967-978, https://doi.org/10.1177/0959683611400204.","productDescription":"12 p.","startPage":"967","endPage":"978","numberOfPages":"12","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true}],"links":[{"id":216522,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1177/0959683611400204"},{"id":244399,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Florida Everglades","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 81.0,25.0 ], [ 81.0,27.0 ], [ 80.0,27.0 ], [ 80.0,25.0 ], [ 81.0,25.0 ] ] ] } } ] }","volume":"21","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-04-20","publicationStatus":"PW","scienceBaseUri":"505a62a2e4b0c8380cd72024","contributors":{"authors":[{"text":"Bernhardt, C. 0000-0003-0082-4731","orcid":"https://orcid.org/0000-0003-0082-4731","contributorId":104307,"corporation":false,"usgs":true,"family":"Bernhardt","given":"C.","affiliations":[],"preferred":false,"id":445027,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}