The physiological effects of episodic pH fluctuations on Atlantic salmon Salmo salar smolts in eastern Maine, U.S.A., were investigated. During this study, S. salar smolts were exposed to ambient stream‐water chemistry conditions at nine sites in four catchments for 3 and 6 day intervals during the spring S. salar smolt migration period. Plasma chloride, plasma glucose, gill aluminium and gill Na+‐ and K+‐ATPase levels in S. salar smolts were assessed in relation to ambient stream‐water chemistry during this migration period. Changes in both plasma chloride and plasma glucose levels of S. salar smolts were strongly correlated with stream pH, and S. salar smolt mortality occurred in one study site with ambient stream pH between 5·6 and 5·8 during the study period. The findings from this study suggest that physiological effects on S. salar smolts are strongly correlated with stream pH and that in rivers and streams with low dissolved organic carbon (DOC) concentrations the threshold for physiological effects and mortality probably occurs at a higher pH and shorter exposure period than in rivers with higher DOC. Additionally, whenever an acidification event in which pH drops below 5·9 coincides with S. salar smolt migration in eastern Maine rivers, there is potential for a significant reduction in plasma ions of S. salar smolts.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1095-8649.2011.03046.x","usgsCitation":"Liebich, T., McCormick, S., Kircheis, D., Johnson, K., Regal, R., and Hrabik, T., 2011, Water chemistry and its effects on the physiology and survival of Atlantic salmon Salmo salar smolts: Journal of Fish Biology, v. 79, no. 2, p. 502-519, https://doi.org/10.1111/j.1095-8649.2011.03046.x.","productDescription":"18 p.","startPage":"502","endPage":"519","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":243893,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maine","otherGeospatial":"Eastern Maine rivers","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -69.598388671875,\n 44.24519901522129\n ],\n [\n -69.19189453125,\n 43.59630591596548\n ],\n [\n -67.43408203124999,\n 44.402391829093915\n ],\n [\n -68.13720703125,\n 45.042478050891546\n ],\n [\n -69.598388671875,\n 44.24519901522129\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"79","issue":"2","noUsgsAuthors":false,"publicationDate":"2011-07-22","publicationStatus":"PW","scienceBaseUri":"505bc7cfe4b08c986b32c636","contributors":{"authors":[{"text":"Liebich, T.","contributorId":63237,"corporation":false,"usgs":true,"family":"Liebich","given":"T.","email":"","affiliations":[],"preferred":false,"id":452361,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCormick, S. D. 0000-0003-0621-6200","orcid":"https://orcid.org/0000-0003-0621-6200","contributorId":20278,"corporation":false,"usgs":true,"family":"McCormick","given":"S. D.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":452358,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kircheis, D.","contributorId":27290,"corporation":false,"usgs":true,"family":"Kircheis","given":"D.","email":"","affiliations":[],"preferred":false,"id":452359,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, Kevin","contributorId":83287,"corporation":false,"usgs":true,"family":"Johnson","given":"Kevin","affiliations":[],"preferred":false,"id":452363,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Regal, R.","contributorId":71029,"corporation":false,"usgs":true,"family":"Regal","given":"R.","email":"","affiliations":[],"preferred":false,"id":452362,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hrabik, T.","contributorId":36777,"corporation":false,"usgs":true,"family":"Hrabik","given":"T.","email":"","affiliations":[],"preferred":false,"id":452360,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035845,"text":"70035845 - 2011 - No major stratigraphic gap exists near the Middle-Upper Pennsylvanian (Desmoinesian-Missourian) boundary in North America","interactions":[],"lastModifiedDate":"2021-02-10T13:18:11.052707","indexId":"70035845","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3000,"text":"Palaios","active":true,"publicationSubtype":{"id":10}},"title":"No major stratigraphic gap exists near the Middle-Upper Pennsylvanian (Desmoinesian-Missourian) boundary in North America","docAbstract":"Interregional correlation of the marine zones of major cyclothems between North America and eastern Europe does not support assertions that a major stratigraphic gap exists between the traditional regional Desmoinesian and Missourian stages in North America. Such a gap was previously proposed to explain an abrupt change in megafloral assemblages in the northern Appalachian Basin and by extension across all of North America. Conodont-based correlation from the essentially complete low-shelf Midcontinent succession (distal from the highstand shoreline), through the mid-shelf Illinois Basin, to the high shelf of the Appalachian Basin (proximal to highstand shoreline) demonstrates that all major ∼400 kyr cyclothem groupings in the Midcontinent are recognizable in the Illinois Basin. In the Appalachian Basin, however, the grouping at the base of the Missourian is represented only by paleosols and localized coal. The immediately preceding grouping was removed very locally by paleovalley incision, as is evident at the 7–11 Mine, Columbiana County, Ohio, from which the original megafloral data were derived. At the few localities where incised paleodrainage exists, there may be a gap of ∼1000 kyr, but a gap of no more than ∼600 kyr occurs elsewhere in the Appalachian Basin at that level and its magnitude progressively decreases westward into the Illinois (∼300 kyr) and Midcontinent (<200 kyr) Basins. Thus, while a gap is present near the Desmoinesian–Missourian boundary in North America, it is typically more than an order of magnitude smaller than that originally proposed and is similar to the gaps inferred at sequence boundaries between cyclothems at many horizons in the Pennsylvanian of North America.
","language":"English","publisher":"Society for Sedimentary Geology","doi":"10.2110/palo.2010.p10-049r","issn":"08831351","usgsCitation":"Falcon-Lang, H.J., Heckel, P., DiMichele, W.A., Blake, B., Easterday, C., Eble, C., Elrick, S., Gastaldo, R.A., Greb, S., Martino, R., John, N.W., Pfefferkorn, H., Phillips, T., and Rosscoe, S., 2011, No major stratigraphic gap exists near the Middle-Upper Pennsylvanian (Desmoinesian-Missourian) boundary in North America: Palaios, v. 26, no. 3, p. 125-139, https://doi.org/10.2110/palo.2010.p10-049r.","productDescription":"15 p.","startPage":"125","endPage":"139","costCenters":[],"links":[{"id":243896,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216055,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2110/palo.2010.p10-049r"}],"country":"United 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Jr.","contributorId":62430,"corporation":false,"usgs":true,"family":"Blake","given":"B.M.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":452721,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Easterday, C.R.","contributorId":44382,"corporation":false,"usgs":true,"family":"Easterday","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":452719,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Eble, C.F.","contributorId":35346,"corporation":false,"usgs":true,"family":"Eble","given":"C.F.","email":"","affiliations":[],"preferred":false,"id":452716,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Elrick, S.","contributorId":68558,"corporation":false,"usgs":true,"family":"Elrick","given":"S.","email":"","affiliations":[],"preferred":false,"id":452723,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Gastaldo, Robert A.","contributorId":13389,"corporation":false,"usgs":false,"family":"Gastaldo","given":"Robert","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":452711,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Greb, S.F.","contributorId":48294,"corporation":false,"usgs":true,"family":"Greb","given":"S.F.","email":"","affiliations":[],"preferred":false,"id":452720,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Martino, R.L.","contributorId":32939,"corporation":false,"usgs":true,"family":"Martino","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":452714,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"John, Nelson W.","contributorId":34348,"corporation":false,"usgs":true,"family":"John","given":"Nelson","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":452715,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Pfefferkorn, H.W.","contributorId":18910,"corporation":false,"usgs":true,"family":"Pfefferkorn","given":"H.W.","email":"","affiliations":[],"preferred":false,"id":452713,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Phillips, T.L.","contributorId":43517,"corporation":false,"usgs":true,"family":"Phillips","given":"T.L.","email":"","affiliations":[],"preferred":false,"id":452718,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Rosscoe, S.J.","contributorId":64477,"corporation":false,"usgs":true,"family":"Rosscoe","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":452722,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70035979,"text":"70035979 - 2011 - Derivation of S and Pb in phanerozoic intrusion-related metal deposits from neoproterozoic sedimentary pyrite, Great Basin, United States","interactions":[],"lastModifiedDate":"2017-12-01T10:10:42","indexId":"70035979","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Derivation of S and Pb in phanerozoic intrusion-related metal deposits from neoproterozoic sedimentary pyrite, Great Basin, United States","docAbstract":"The thick (≤8 km), regionally extensive section of Neoproterozoic siliciclastic strata (terrigenous detrital succession, TDS) in the central and eastern Great Basin contains sedimentary pyrite characterized by mostly high δ34S values (−11.6 to 40.8‰, >70% exceed 10‰; 51 analyses) derived from reduction of seawater sulfate, and by markedly radiogenic Pb isotopes (207Pb/204Pb >19.2; 15 analyses) acquired from clastic detritus eroded from Precambrian cratonal rocks to the east-southeast. In the overlying Paleozoic section, Pb-Zn-Cu-Ag-Au deposits associated with Jurassic, Cretaceous, and Tertiary granitic intrusions (intrusion-related metal deposits) contain galena and other sulfide minerals with S and Pb isotope compositions similar to those of TDS sedimentary pyrite, consistent with derivation of deposit S and Pb from TDS pyrite. Minor element abundances in TDS pyrite (e.g., Pb, Zn, Cu, Ag, and Au) compared to sedimentary and hydrothermal pyrite elsewhere are not noticeably elevated, implying that enrichment in source minerals is not a precondition for intrusion-related metal deposits.
Three mechanisms for transferring components of TDS sedimentary pyrite to intrusion-related metal deposits are qualitatively evaluated. One mechanism involves (1) decomposition of TDS pyrite in thermal aureoles of intruding magmas, and (2) aqueous transport and precipitation in thermal or fluid mixing gradients of isotopically heavy S, radiogenic Pb, and possibly other sedimentary pyrite and detrital mineral components, as sulfide minerals in intrusion-related metal deposits. A second mechanism invokes mixing and S isotope exchange in thermal aureoles of Pb and S exsolved from magma and derived from decomposition of sedimentary pyrite. A third mechanism entails melting of TDS strata or assimilation of TDS strata by crustal or mantle magmas. TDS-derived or assimilated magmas ascend, decompress, and exsolve a mixture of TDS volatiles, including isotopically heavy S and radiogenic Pb from sedimentary pyrite, and volatiles acquired from deeper crustal or mantle sources.
In the central and eastern Great Basin, the wide distribution and high density of small to mid-sized vein, replacement, and skarn intrusion-related metal deposits in lower Paleozoic rocks that contain TDS sedimentary pyrite S and Pb reflect (1) prolific Jurassic, Cretaceous, and Tertiary magmatism, (2) a regional, substrate reservoir of S and Pb in permeable and homogeneous siliciclastic strata, and (3) relatively small scale concentration of substrate and magmatic components. Large intrusion-related metal deposits in the central and eastern Great Basin acquired S and most Pb from thicker lithospheric sections.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/econgeo.106.5.883","issn":"03610128","usgsCitation":"Vikre, P., Poulson, S., and Koenig, A.E., 2011, Derivation of S and Pb in phanerozoic intrusion-related metal deposits from neoproterozoic sedimentary pyrite, Great Basin, United States: Economic Geology, v. 106, no. 5, p. 883-912, https://doi.org/10.2113/econgeo.106.5.883.","productDescription":"30 p.","startPage":"883","endPage":"912","numberOfPages":"30","ipdsId":"IP-021544","costCenters":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":244125,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216264,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/econgeo.106.5.883"}],"volume":"106","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-07-22","publicationStatus":"PW","scienceBaseUri":"5059fedce4b0c8380cd4ef6d","contributors":{"authors":[{"text":"Vikre, Peter G. pvikre@usgs.gov","contributorId":1800,"corporation":false,"usgs":true,"family":"Vikre","given":"Peter G.","email":"pvikre@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":453438,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Poulson, S.R.","contributorId":98859,"corporation":false,"usgs":true,"family":"Poulson","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":453439,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koenig, Alan E. 0000-0002-5230-0924 akoenig@usgs.gov","orcid":"https://orcid.org/0000-0002-5230-0924","contributorId":1564,"corporation":false,"usgs":true,"family":"Koenig","given":"Alan","email":"akoenig@usgs.gov","middleInitial":"E.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":453437,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036072,"text":"70036072 - 2011 - Wintering bird response to fall mowing of herbaceous buffers","interactions":[],"lastModifiedDate":"2021-02-03T17:21:42.926526","indexId":"70036072","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3784,"text":"Wilson Journal of Ornithology","active":true,"publicationSubtype":{"id":10}},"title":"Wintering bird response to fall mowing of herbaceous buffers","docAbstract":"Herbaceous buffers are strips of herbaceous vegetation planted between working agricultural land and streams or wetlands. Mowing is a common maintenance practice to control woody plants and noxious weeds in herbaceous buffers. Buffers enrolled in Maryland's Conservation Reserve Enhancement Program (CREP) cannot be mowed during the primary bird nesting season between 15 April and 15 August. Most mowing of buffers in Maryland occurs in late summer or fall, leaving the vegetation short until the following spring. We studied the response of wintering birds to fall mowing of buffers. We mowed one section to 10–15 cm in 13 buffers and kept another section unmowed. Ninety-two percent of birds detected in buffers were grassland or scrub-shrub species, and 98% of all birds detected were in unmowed buffers. Total bird abundance, species richness, and total avian conservation value were significantly greater in unmowed buffers, and Savannah Sparrows (Passerculus sandwichensis), Song Sparrows (Melospiza melodia), and White-throated Sparrows (Zonotrichia albicollis) were significantly more abundant in unmowed buffers. Wintering bird use of mowed buffers was less than in unmowed buffers. Leaving herbaceous buffers unmowed through winter will likely provide better habitat for wintering birds.
","language":"English","publisher":"BioOne","doi":"10.1676/09-202.1","issn":"15594491","usgsCitation":"Blank, P., Parks, J., and Dively, G., 2011, Wintering bird response to fall mowing of herbaceous buffers: Wilson Journal of Ornithology, v. 123, no. 1, p. 59-64, https://doi.org/10.1676/09-202.1.","productDescription":"6 p.","startPage":"59","endPage":"64","costCenters":[],"links":[{"id":246326,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218327,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1676/09-202.1"}],"country":"United States","state":"Maryland","otherGeospatial":"Eastern Shore of Maryland","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -76.959228515625,\n 38.07404145941957\n ],\n [\n -75.750732421875,\n 38.07404145941957\n ],\n [\n -75.750732421875,\n 39.73253798438173\n ],\n [\n -76.959228515625,\n 39.73253798438173\n ],\n [\n -76.959228515625,\n 38.07404145941957\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"123","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd166e4b08c986b32f3e6","contributors":{"authors":[{"text":"Blank, P.J.","contributorId":22176,"corporation":false,"usgs":true,"family":"Blank","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":454026,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parks, J.R.","contributorId":105155,"corporation":false,"usgs":true,"family":"Parks","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":454027,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dively, G.P.","contributorId":18604,"corporation":false,"usgs":true,"family":"Dively","given":"G.P.","email":"","affiliations":[],"preferred":false,"id":454025,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036141,"text":"70036141 - 2011 - Distribution and characterization of in-channel large wood in relation to geomorphic patterns on a low-gradient river","interactions":[],"lastModifiedDate":"2019-08-27T07:59:15","indexId":"70036141","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Distribution and characterization of in-channel large wood in relation to geomorphic patterns on a low-gradient river","docAbstract":"A 177 river km georeferenced aerial survey of in-channel large wood (LW) on the lower Roanoke River, NC was conducted to determine LW dynamics and distributions on an eastern USA low-gradient large river. Results indicate a system with approximately 75% of the LW available for transport either as detached individual LW or as LW in log jams. There were approximately 55 individual LW per river km and another 59 pieces in log jams per river km. Individual LW is a product of bank erosion (73% is produced through erosion) and is isolated on the mid and upper banks at low flow. This LW does not appear to be important for either aquatic habitat or as a human risk. Log jams rest near or at water level making them a factor in bank complexity in an otherwise homogenous fine-grained channel. A segmentation test was performed using LW frequency by river km to detect breaks in longitudinal distribution and to define homogeneous reaches of LWfrequency. Homogeneous reaches were then analyzed to determine their relationship to bank height, channel width/depth, sinuosity, and gradient. Results show that log jams are a product of LW transport and occur more frequently in areas with high snag concentrations, low to intermediate bank heights, high sinuosity, high local LW recruitment rates, and narrow channel widths. The largest concentration of log jams (21.5 log jams/km) occurs in an actively eroding reach. Log jam concentrations downstream of this reach are lower due to a loss of river competency as the channel reaches sea level and the concurrent development of unvegetated mudflats separating the active channel from the floodplain forest. Substantial LW transport occurs on this low-gradient, dam-regulated large river; this study, paired with future research on transport mechanisms should provide resource managers and policymakers with options to better manage aquatic habitat while mitigating possible negative impacts to human interests.","language":"English","publisher":"Wiley","doi":"10.1002/esp.2135","issn":"01979337","usgsCitation":"Moulin, B., Schenk, E.R., and Hupp, C.R., 2011, Distribution and characterization of in-channel large wood in relation to geomorphic patterns on a low-gradient river: Earth Surface Processes and Landforms, v. 36, no. 9, p. 1137-1151, https://doi.org/10.1002/esp.2135.","productDescription":"15 p.","startPage":"1137","endPage":"1151","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"links":[{"id":246429,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218423,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/esp.2135"}],"country":"United States","state":"North Carolina","otherGeospatial":"Roanoke River","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -77.852088,35.807089 ], [ -77.852088,36.536505 ], [ -76.535816,36.536505 ], [ -76.535816,35.807089 ], [ -77.852088,35.807089 ] ] ] } } ] }","volume":"36","issue":"9","noUsgsAuthors":false,"publicationDate":"2011-03-01","publicationStatus":"PW","scienceBaseUri":"505a027fe4b0c8380cd5008b","contributors":{"authors":[{"text":"Moulin, Bertrand","contributorId":80160,"corporation":false,"usgs":true,"family":"Moulin","given":"Bertrand","email":"","affiliations":[],"preferred":false,"id":454426,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schenk, Edward R. 0000-0001-6886-5754 eschenk@usgs.gov","orcid":"https://orcid.org/0000-0001-6886-5754","contributorId":2183,"corporation":false,"usgs":true,"family":"Schenk","given":"Edward","email":"eschenk@usgs.gov","middleInitial":"R.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":454424,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hupp, Cliff R. 0000-0003-1853-9197 crhupp@usgs.gov","orcid":"https://orcid.org/0000-0003-1853-9197","contributorId":2344,"corporation":false,"usgs":true,"family":"Hupp","given":"Cliff","email":"crhupp@usgs.gov","middleInitial":"R.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":454425,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036162,"text":"70036162 - 2011 - Cold-climate slope deposits and landscape modifications of the Mid-Atlantic Coastal Plain, Eastern USA","interactions":[],"lastModifiedDate":"2013-03-06T17:23:38","indexId":"70036162","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1785,"text":"Geological Society Special Publication","active":true,"publicationSubtype":{"id":10}},"title":"Cold-climate slope deposits and landscape modifications of the Mid-Atlantic Coastal Plain, Eastern USA","docAbstract":"The effects of Pleistocene cold-climate geomorphology are distributed across the weathered and eroded Mid-Atlantic Coastal Plain uplands from the Wisconsinan terminal moraine south to Tidewater Virginia. Cold-climate deposits and landscape modifications are superimposed on antecedent landscapes of old, weathered Neogene upland gravels and Pleistocene marine terraces that had been built during warm periods and sea-level highstands. In New Jersey, sequences of surficial deposits define a long history of repeating climate change events. To the south across the Delmarva Peninsula and southern Maryland, most antecedent topography has been obscured by Late Pleistocene surficial deposits. These are spatially variable and are collectively described as a cold-climate alloformation. The cold-climate alloformation includes time-transgressive details of climate deterioration from at least marine isotope stage (MIS) 4 through the end of MIS 2. Some deposits and landforms within the alloformation may be as young as the Younger Dryas. Southwards along the trend of the Potomac River, these deposits and their climatic affinities become diffused. In Virginia, a continuum of erosion and surficial deposits appears to be the product of ‘normal’ temperate, climate-forced processes. The cold-climate alloformation and more temperate deposits in Virginia are being partly covered by Holocene alluvium and bay mud.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society Special Publication","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geological Society, London","publisherLocation":"London, U.K.","doi":"10.1144/SP354.17","issn":"03058719","usgsCitation":"Newell, W.L., and Dejong, B., 2011, Cold-climate slope deposits and landscape modifications of the Mid-Atlantic Coastal Plain, Eastern USA: Geological Society Special Publication, v. 354, p. 259-276, https://doi.org/10.1144/SP354.17.","productDescription":"18 p.","startPage":"259","endPage":"276","costCenters":[],"links":[{"id":218248,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1144/SP354.17"},{"id":246241,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 172.5,18.9 ], [ 172.5,71.4 ], [ -66.9,71.4 ], [ -66.9,18.9 ], [ 172.5,18.9 ] ] ] } } ] }","volume":"354","noUsgsAuthors":false,"publicationDate":"2011-05-18","publicationStatus":"PW","scienceBaseUri":"5059f7a7e4b0c8380cd4cc2d","contributors":{"authors":[{"text":"Newell, Wayne L. wnewell@usgs.gov","contributorId":99114,"corporation":false,"usgs":true,"family":"Newell","given":"Wayne","email":"wnewell@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":false,"id":454512,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dejong, B.D.","contributorId":96126,"corporation":false,"usgs":true,"family":"Dejong","given":"B.D.","email":"","affiliations":[],"preferred":false,"id":454511,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036175,"text":"70036175 - 2011 - Scale-dependent factors affecting North American river otter distribution in the midwest","interactions":[],"lastModifiedDate":"2021-06-04T16:48:27.777773","indexId":"70036175","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":737,"text":"American Midland Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Scale-dependent factors affecting North American river otter distribution in the midwest","docAbstract":"The North American river otter (Lontra canadensis) is recovering from near extirpation throughout much of its range. Although reintroductions, trapping regulations and habitat improvements have led to the reestablishment of river otters in the Midwest, little is known about how their distribution is influenced by local- and landscape-scale habitat. We conducted river otter sign surveys from Jan. to Apr. in 2008 and 2009 in eastern Kansas to assess how local- and landscape-scale habitat factors affect river otter occupancy. We surveyed three to nine 400-m stretches of stream and reservoir shorelines for 110 sites and measured local-scale variables (e.g., stream order, land cover types) within a 100 m buffer of the survey site and landscape-scale variables (e.g., road density, land cover types) for Hydrological Unit Code 14 watersheds. We then used occupancy models that account for the probability of detection to estimate occupancy as a function of these covariates using Program PRESENCE. The best-fitting model indicated river otter occupancy increased with the proportion of woodland cover and decreased with the proportion of cropland and grassland cover at the local scale. Occupancy also increased with decreased shoreline diversity, waterbody density and stream density at the landscape scale. Occupancy was not affected by land cover or human disturbance at the landscape scale. Understanding the factors and scale important to river otter occurrence will be useful in identifying areas for management and continued restoration.
","language":"English","publisher":"University of Notre Dame","doi":"10.1674/0003-0031-166.1.177","usgsCitation":"Jeffress, M.R., Paukert, C.P., Whittier, J.B., Sandercock, B.K., and Gipson, P.S., 2011, Scale-dependent factors affecting North American river otter distribution in the midwest: American Midland Naturalist, v. 166, no. 1, p. 177-193, https://doi.org/10.1674/0003-0031-166.1.177.","productDescription":"17 p.","startPage":"177","endPage":"193","ipdsId":"IP-015089","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true},{"id":352,"text":"Kansas Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"links":[{"id":246464,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Kansas","otherGeospatial":"Eastern Kansas","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -94.658203125,\n 36.98500309285596\n ],\n [\n -94.3505859375,\n 36.932330061503144\n ],\n [\n -94.32861328125,\n 37.020098201368114\n ],\n [\n -94.32861328125,\n 37.71859032558816\n ],\n [\n -94.3505859375,\n 39.13006024213511\n ],\n [\n -94.7515869140625,\n 39.7240885773337\n ],\n [\n -94.833984375,\n 39.93501296038254\n ],\n [\n -95.11962890625,\n 39.918162846609455\n ],\n [\n -95.29541015625,\n 40.027614437486655\n ],\n [\n -97.05322265625,\n 40.027614437486655\n ],\n [\n -96.83349609375,\n 37.00255267215955\n ],\n [\n -96.48193359375,\n 36.932330061503144\n ],\n [\n -94.658203125,\n 36.98500309285596\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"166","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b870de4b08c986b31629b","contributors":{"authors":[{"text":"Jeffress, Mackenzie R.","contributorId":67346,"corporation":false,"usgs":true,"family":"Jeffress","given":"Mackenzie","email":"","middleInitial":"R.","affiliations":[{"id":352,"text":"Kansas Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"preferred":false,"id":454642,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Paukert, Craig P. 0000-0002-9369-8545 cpaukert@usgs.gov","orcid":"https://orcid.org/0000-0002-9369-8545","contributorId":147821,"corporation":false,"usgs":true,"family":"Paukert","given":"Craig","email":"cpaukert@usgs.gov","middleInitial":"P.","affiliations":[{"id":411,"text":"National Climate Change and Wildlife Science Center","active":true,"usgs":true},{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":454639,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Whittier, Joanna B.","contributorId":53151,"corporation":false,"usgs":false,"family":"Whittier","given":"Joanna","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":454640,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sandercock, B. K.","contributorId":61382,"corporation":false,"usgs":false,"family":"Sandercock","given":"B.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":454641,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gipson, P. S.","contributorId":70136,"corporation":false,"usgs":false,"family":"Gipson","given":"P.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":454643,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70036236,"text":"70036236 - 2011 - Oligocene and Miocene arc volcanism in northeastern California: evidence for post-Eocene segmentation of the subducting Farallon plate","interactions":[],"lastModifiedDate":"2013-07-23T09:31:15","indexId":"70036236","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Oligocene and Miocene arc volcanism in northeastern California: evidence for post-Eocene segmentation of the subducting Farallon plate","docAbstract":"The Warner Range in northeastern California exposes a section of Tertiary rocks over 3 km thick, offering a unique opportunity to study the long-term history of Cascade arc volcanism in an area otherwise covered by younger volcanic rocks. The oldest locally sourced volcanic rocks in the Warner Range are Oligocene (28–24 Ma) and include a sequence of basalt and basaltic andesite lava flows overlain by hornblende and pyroxene andesite pyroclastic flows and minor lava flows. Both sequences vary in thickness (0–2 km) along strike and are inferred to be the erosional remnants of one or more large, partly overlapping composite volcanoes. No volcanic rocks were erupted in the Warner Range between ca. 24 and 16 Ma, although minor distally sourced silicic tuffs were deposited during this time. Arc volcanism resumed ca. 16 Ma with eruption of basalt and basaltic andesite lavas sourced from eruptive centers 5–10 km south of the relict Oligocene centers. Post–16 Ma arc volcanism continued until ca. 8 Ma, forming numerous eroded but well-preserved shield volcanoes to the south of the Warner Range. Oligocene to Late Miocene volcanic rocks in and around the Warner Range are calc-alkaline basalts to andesites (48%–61% SiO2) that display negative Ti, Nb, and Ta anomalies in trace element spider diagrams, consistent with an arc setting. Middle Miocene lavas in the Warner Range are distinctly different in age, composition, and eruptive style from the nearby Steens Basalt, with which they were previously correlated. Middle to Late Miocene shield volcanoes south of the Warner Range consist of homogeneous basaltic andesites (53%–57% SiO2) that are compositionally similar to Oligocene rocks in the Warner Range. They are distinctly different from younger (Late Miocene to Pliocene) high-Al, low-K olivine tholeiites, which are more mafic (46%–49% SiO2), did not build large edifices, and are thought to be related to backarc extension. The Warner Range is ∼100 km east of the axis of the modern arc in northeastern California, suggesting that the Cascade arc south of modern Mount Shasta migrated west during the Late Miocene and Pliocene, while the arc north of Mount Shasta remained in essentially the same position. We interpret these patterns as evidence for an Eocene to Miocene tear in the subducting slab, with a more steeply dipping plate segment to the north, and an initially more gently dipping segment to the south that gradually steepened from the Middle Miocene to the present.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geosphere","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/GES00650.1","issn":"1553040X","usgsCitation":"Colgan, J., Egger, A., John, D., Cousens, B., Fleck, R., and Henry, C., 2011, Oligocene and Miocene arc volcanism in northeastern California: evidence for post-Eocene segmentation of the subducting Farallon plate: Geosphere, v. 7, no. 3, p. 733-755, https://doi.org/10.1130/GES00650.1.","productDescription":"23 p.","startPage":"733","endPage":"755","costCenters":[{"id":671,"text":"Western Region Geology and Geophysics Science Center","active":false,"usgs":true}],"links":[{"id":246503,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218487,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/GES00650.1"}],"country":"United States","state":"California","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.41,32.53 ], [ -124.41,42.01 ], [ -114.13,42.01 ], [ -114.13,32.53 ], [ -124.41,32.53 ] ] ] } } ] }","volume":"7","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6d5fe4b0c8380cd750db","contributors":{"authors":[{"text":"Colgan, J.P.","contributorId":71678,"corporation":false,"usgs":true,"family":"Colgan","given":"J.P.","affiliations":[],"preferred":false,"id":455030,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Egger, A.E.","contributorId":70159,"corporation":false,"usgs":true,"family":"Egger","given":"A.E.","affiliations":[],"preferred":false,"id":455029,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"John, D. A.","contributorId":43748,"corporation":false,"usgs":true,"family":"John","given":"D. A.","affiliations":[],"preferred":false,"id":455026,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cousens, B.","contributorId":61683,"corporation":false,"usgs":true,"family":"Cousens","given":"B.","email":"","affiliations":[],"preferred":false,"id":455028,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fleck, R.J.","contributorId":25147,"corporation":false,"usgs":true,"family":"Fleck","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":455025,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Henry, C.D.","contributorId":58306,"corporation":false,"usgs":true,"family":"Henry","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":455027,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70036264,"text":"70036264 - 2011 - Conservation and management of crayfishes: Lessons from Pennsylvania","interactions":[],"lastModifiedDate":"2021-01-20T18:23:04.805221","indexId":"70036264","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1657,"text":"Fisheries","onlineIssn":"1548-8446","printIssn":"0363-2415","active":true,"publicationSubtype":{"id":10}},"title":"Conservation and management of crayfishes: Lessons from Pennsylvania","docAbstract":"North America's crayfish fauna is diverse, ecologically important, and highly threatened. Unfortunately, up‐to‐date information is scarce, hindering conservation and management efforts. In Pennsylvania and nearby states, recent efforts allowed us to determine the conservation status of several native crayfishes and develop management strategies for those species. Due to rarity and proximity to urban centers and introduced (exotic) crayfishes, Cambarus (Puncticambarus) sp., an undescribed member of the Cambarus acuminatus complex, is critically imperiled in Pennsylvania and possibly range‐wide. Orconectes limosus is more widespread; however, recent population losses have been substantial, especially in Pennsylvania, and northern Maryland, where its range has declined (retreated eastward) by greater than 200 km. Introduced congeners likely played a major role in those losses. Although extirpated from some areas, Cambarus bartonii bartonii remains widespread and is not an immediate conservation concern. In light of these findings, the role of barriers (e.g., dams), environmental protection, educational programs, and regulations in preventing crayfish invasions and conserving native crayfishes is discussed, and management initiatives centered on those factors are presented. The need for methods to eliminate exotics and monitor natives is highlighted. Although tailored to a specific regional fauna, these ideas have broad applicability and would benefit many North American crayfishes.
","language":"English","publisher":"American Fisheries Society","doi":"10.1080/03632415.2011.607080","issn":"03632415","usgsCitation":"Lieb, D., Bouchard, R., Carline, R., Nuttall, T., Wallace, J., and Burkholder, C., 2011, Conservation and management of crayfishes: Lessons from Pennsylvania: Fisheries, v. 36, no. 10, p. 489-506, https://doi.org/10.1080/03632415.2011.607080.","productDescription":"18 p.","startPage":"489","endPage":"506","costCenters":[],"links":[{"id":246472,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Pennsylvania","otherGeospatial":"Eastern Pennsylvania","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.6513671875,\n 41.96765920367816\n ],\n [\n -77.71728515624999,\n 39.639537564366684\n ],\n [\n -75.6298828125,\n 39.7240885773337\n ],\n [\n -75.03662109375,\n 39.977120098439634\n ],\n [\n -74.77294921875,\n 40.27952566881291\n ],\n [\n -75.146484375,\n 40.94671366508002\n ],\n [\n -74.6630859375,\n 41.393294288784865\n ],\n [\n -75.16845703124999,\n 41.983994270935625\n ],\n [\n -75.6298828125,\n 42.08191667830631\n ],\n [\n -77.6513671875,\n 41.96765920367816\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"36","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-10-19","publicationStatus":"PW","scienceBaseUri":"5059f9d8e4b0c8380cd4d7f6","contributors":{"authors":[{"text":"Lieb, D.A.","contributorId":98158,"corporation":false,"usgs":true,"family":"Lieb","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":455171,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bouchard, R.W.","contributorId":55676,"corporation":false,"usgs":true,"family":"Bouchard","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":455170,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carline, R.F.","contributorId":107444,"corporation":false,"usgs":true,"family":"Carline","given":"R.F.","affiliations":[],"preferred":false,"id":455173,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nuttall, T.R.","contributorId":26556,"corporation":false,"usgs":true,"family":"Nuttall","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":455168,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wallace, J.R.","contributorId":35574,"corporation":false,"usgs":true,"family":"Wallace","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":455169,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Burkholder, C.L.","contributorId":99412,"corporation":false,"usgs":true,"family":"Burkholder","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":455172,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70036266,"text":"70036266 - 2011 - Regional shoreline change and coastal erosion hazards in Arctic Alaska","interactions":[],"lastModifiedDate":"2021-01-25T17:46:06.179722","indexId":"70036266","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Regional shoreline change and coastal erosion hazards in Arctic Alaska","docAbstract":"Historical shoreline positions along the mainland Beaufort Sea coast of Alaska were digitized and analyzed to determine the long-term rate of change. Average shoreline change rates and ranges from 1947 to the mid-2000s were determined every 50 meters between Barrow and Demarcation Point, at the U.S.-Canadian border. Results show that shoreline change rates are highly variable along the coast, with an average regional shoreline change rate of-2.0 m/yr and localized rates of up to -19 m/yr. The highest erosion rates were observed at headlands, points, and associated with breached thermokarst lakes. Areas of accretion were limited, and generally associated with spit extension and minor beach accretion. In general, erosion rates increase from east to west, with overall higher rates east of Harrison Bay.
","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"Solutions to Coastal Disasters 2011 - Proceedings of the 2011 Solutions to Coastal Disasters Conference","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"2011 Solutions to Coastal Disasters Conference","conferenceDate":"June 25-29, 2011","conferenceLocation":"Anchorage, AK","language":"English","doi":"10.1061/41185(417)24","isbn":"9780784411858","usgsCitation":"Gibbs, A.E., Harden, E.L., Richmond, B.M., and Erikson, L.H., 2011, Regional shoreline change and coastal erosion hazards in Arctic Alaska, in Solutions to Coastal Disasters 2011 - Proceedings of the 2011 Solutions to Coastal Disasters Conference, Anchorage, AK, June 25-29, 2011, p. 258-272, https://doi.org/10.1061/41185(417)24.","productDescription":"15 p.","startPage":"258","endPage":"272","numberOfPages":"15","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":246506,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218489,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/41185(417)24"}],"country":"United States","state":"Alaska","otherGeospatial":"Beaufort Sea coast","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -160.75195312499997,\n 69.09993967425089\n ],\n [\n -141.064453125,\n 69.09993967425089\n ],\n [\n -141.064453125,\n 71.96538769913127\n ],\n [\n -160.75195312499997,\n 71.96538769913127\n ],\n [\n -160.75195312499997,\n 69.09993967425089\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"50e4a578e4b0e8fec6cdbe16","contributors":{"authors":[{"text":"Gibbs, Ann E. 0000-0002-0883-3774 agibbs@usgs.gov","orcid":"https://orcid.org/0000-0002-0883-3774","contributorId":2644,"corporation":false,"usgs":true,"family":"Gibbs","given":"Ann","email":"agibbs@usgs.gov","middleInitial":"E.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":455181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harden, E. Lynne","contributorId":54639,"corporation":false,"usgs":true,"family":"Harden","given":"E.","email":"","middleInitial":"Lynne","affiliations":[],"preferred":false,"id":455182,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"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":455183,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Erikson, Li H. 0000-0002-8607-7695 lerikson@usgs.gov","orcid":"https://orcid.org/0000-0002-8607-7695","contributorId":149963,"corporation":false,"usgs":true,"family":"Erikson","given":"Li","email":"lerikson@usgs.gov","middleInitial":"H.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":455180,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036268,"text":"70036268 - 2011 - Habitat fragmentation reduces nest survival in an Afrotropical bird community in a biodiversity hotspot","interactions":[],"lastModifiedDate":"2012-03-12T17:22:02","indexId":"70036268","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3165,"text":"Proceedings of the National Academy of Sciences of the United States of America","active":true,"publicationSubtype":{"id":10}},"title":"Habitat fragmentation reduces nest survival in an Afrotropical bird community in a biodiversity hotspot","docAbstract":"Ecologists have long hypothesized that fragmentation of tropical landscapes reduces avian nest success. However, this hypothesis has not been rigorously assessed because of the difficulty of finding large numbers of well-hidden nests in tropical forests. Here we report that in the East Usambara Mountains in Tanzania, which are part of the Eastern Arc Mountains, a global biodiversity hotspot, that daily nest survival rate and nest success for seven of eight common understory bird species that we examined over a single breeding season were significantly lower in fragmented than in continuous forest, with the odds of nest failure for these seven species ranging from 1.9 to 196.8 times higher in fragmented than continuous forest. Cup-shaped nests were particularly vulnerable in fragments. We then examined over six breeding seasons and 14 study sites in a multivariable survival analysis the influence of landscape structure and nest location on daily nest survival for 13 common species representing 1,272 nests and four nest types (plate, cup, dome, and pouch). Across species and nest types, area, distance of nest to edge, and nest height had a dominant influence on daily nest survival, with area being positively related to nest survival and distance of nest to edge and nest height being both positively and negatively associated with daily nest survival. Our results indicate that multiple environmental factors contribute to reduce nest survival within a tropical understory bird community in a fragmented landscape and that maintaining large continuous forest is important for enhancing nest survival for Afrotropical understory birds.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1073/pnas.1104955108","issn":"00278424","usgsCitation":"Newmark, W., and Stanley, T., 2011, Habitat fragmentation reduces nest survival in an Afrotropical bird community in a biodiversity hotspot: Proceedings of the National Academy of Sciences of the United States of America, v. 108, no. 28, p. 11488-11493, https://doi.org/10.1073/pnas.1104955108.","startPage":"11488","endPage":"11493","numberOfPages":"6","costCenters":[],"links":[{"id":475270,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1073/pnas.1104955108","text":"Publisher Index Page"},{"id":218521,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.1104955108"},{"id":246541,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"28","noUsgsAuthors":false,"publicationDate":"2011-06-27","publicationStatus":"PW","scienceBaseUri":"505a2f0ee4b0c8380cd5ca4e","contributors":{"authors":[{"text":"Newmark, W.D.","contributorId":100644,"corporation":false,"usgs":true,"family":"Newmark","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":455189,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stanley, T.R.","contributorId":61379,"corporation":false,"usgs":true,"family":"Stanley","given":"T.R.","affiliations":[],"preferred":false,"id":455188,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036271,"text":"70036271 - 2011 - Geology and petroleum potential of the Arctic Alaska petroleum province","interactions":[],"lastModifiedDate":"2021-01-20T18:02:38.113461","indexId":"70036271","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1784,"text":"Geological Society Memoir","active":true,"publicationSubtype":{"id":10}},"chapter":"32","title":"Geology and petroleum potential of the Arctic Alaska petroleum province","docAbstract":"The Arctic Alaska petroleum province encompasses all lands and adjacent continental shelf areas north of the Brooks Range–Herald Arch orogenic belt and south of the northern (outboard) margin of the Beaufort Rift shoulder. Even though only a small part is thoroughly explored, it is one of the most prolific petroleum provinces in North America with total known resources (cumulative production plus proved reserves) of c. 28 BBOE. The province constitutes a significant part of a displaced continental fragment, the Arctic Alaska microplate, that was probably rifted from the Canadian Arctic margin during formation of the Canada Basin. Petroleum prospective rocks in the province, mostly Mississippian and younger, record a sequential geological evolution through passive margin, rift and foreland basin tectonic stages. Significant petroleum source and reservoir rocks were formed during each tectonic stage but it was the foreland basin stage that provided the necessary burial heating to generate petroleum from the source rocks. The lion's share of known petroleum resources in the province occur in combination structural–stratigraphic traps formed as a consequence of rifting and located along the rift shoulder. Since the discovery of the super-giant Prudhoe Bay accumulation in one of these traps in the late 1960s, exploration activity preferentially focused on these types of traps. More recent activity, however, has emphasized the potential for stratigraphic traps and the prospect of a natural gas pipeline in this region has spurred renewed interest in structural traps. For assessment purposes, the province is divided into a Platform assessment unit (AU), comprising the Beaufort Rift shoulder and its relatively undeformed flanks, and a Fold-and-Thrust Belt AU, comprising the deformed area north of the Brooks Range and Herald Arch tectonic belt. Mean estimates of undiscovered, technically recoverable resources include nearly 28 billion barrels of oil (BBO) and 122 trillion cubic feet (TCF) of nonassociated gas in the Platform AU and 2 BBO and 59 TCF of nonassociated gas in the Fold-and-Thrust Belt AU.
","language":"English","publisher":"The Geological Society of London","doi":"10.1144/M35.32","issn":"04354052","usgsCitation":"Bird, K.J., and Houseknecht, D.W., 2011, Geology and petroleum potential of the Arctic Alaska petroleum province: Geological Society Memoir, no. 35, p. 485-499, https://doi.org/10.1144/M35.32.","productDescription":"15 p.","startPage":"485","endPage":"499","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"links":[{"id":246572,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218551,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1144/M35.32"}],"country":"United States","state":"Alaska","otherGeospatial":"Arctic Alaska Province","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 68.13885164925573\n ],\n [\n -162.59765625,\n 68.26938680456564\n ],\n [\n -159.169921875,\n 68.8159271333607\n ],\n [\n -151.34765625,\n 69.03714171275197\n ],\n [\n -138.955078125,\n 68.43151284537514\n ],\n [\n -138.427734375,\n 69.68761843185617\n ],\n [\n -146.162109375,\n 71.07405646336098\n ],\n [\n -154.072265625,\n 72.01972876525514\n ],\n [\n -162.59765625,\n 72.39570570653261\n ],\n [\n -169.365234375,\n 72.04683989379397\n ],\n [\n -169.45312499999997,\n 68.75231494434473\n ],\n [\n -167.607421875,\n 67.7760253890732\n ],\n [\n -166.55273437499997,\n 68.13885164925573\n ]\n ]\n ]\n }\n }\n ]\n}","issue":"35","noUsgsAuthors":false,"publicationDate":"2011-08-05","publicationStatus":"PW","scienceBaseUri":"5059f46ae4b0c8380cd4bd03","contributors":{"authors":[{"text":"Bird, Kenneth J. kbird@usgs.gov","contributorId":1015,"corporation":false,"usgs":true,"family":"Bird","given":"Kenneth","email":"kbird@usgs.gov","middleInitial":"J.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":455201,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, David W. 0000-0002-9633-6910 dhouse@usgs.gov","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":645,"corporation":false,"usgs":true,"family":"Houseknecht","given":"David","email":"dhouse@usgs.gov","middleInitial":"W.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":455200,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036296,"text":"70036296 - 2011 - Wave climate and trends along the eastern Chukchi Arctic Alaska coast","interactions":[],"lastModifiedDate":"2021-10-21T15:02:43.811423","indexId":"70036296","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Wave climate and trends along the eastern Chukchi Arctic Alaska coast","docAbstract":"Due in large part to the difficulty of obtaining measurements in the Arctic, little is known about the wave climate along the coast of Arctic Alaska. In this study, numerical model simulations encompassing 40 years of wave hind-casts were used to assess mean and extreme wave conditions. Results indicate that the wave climate was strongly modulated by large-scale atmospheric circulation patterns and that mean and extreme wave heights and periods exhibited increasing trends in both the sea and swell frequency bands over the time-period studied (1954–2004). Model simulations also indicate that the upward trend was not due to a decrease in the minimum icepack extent.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Solutions to Coastal Disasters 2011 - Proceedings of the 2011 Solutions to Coastal Disasters Conference","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"2011 Solutions to Coastal Disasters Conference","conferenceDate":"June 25-29, 2011","conferenceLocation":"Anchorage, AK","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/41185(417)25","isbn":"9780784411858","usgsCitation":"Erikson, L.H., Storlazzi, C., and Jensen, R.E., 2011, Wave climate and trends along the eastern Chukchi Arctic Alaska coast, in Solutions to Coastal Disasters 2011 - Proceedings of the 2011 Solutions to Coastal Disasters Conference, Anchorage, AK, June 25-29, 2011, p. 273-285, https://doi.org/10.1061/41185(417)25.","productDescription":"13 p.","startPage":"273","endPage":"285","ipdsId":"IP-029005","costCenters":[],"links":[{"id":246403,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"eastern Chukchi coast","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -168.22265625,\n 64.41592147626879\n ],\n [\n -162.9931640625,\n 64.41592147626879\n ],\n [\n -162.9931640625,\n 70.74347779138229\n ],\n [\n -168.22265625,\n 70.74347779138229\n ],\n [\n -168.22265625,\n 64.41592147626879\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505bcf8ce4b08c986b32e97a","contributors":{"authors":[{"text":"Erikson, L. H.","contributorId":21366,"corporation":false,"usgs":true,"family":"Erikson","given":"L.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":455362,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Storlazzi, C. D. 0000-0001-8057-4490","orcid":"https://orcid.org/0000-0001-8057-4490","contributorId":98905,"corporation":false,"usgs":true,"family":"Storlazzi","given":"C. D.","affiliations":[],"preferred":false,"id":455363,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jensen, R. E.","contributorId":104750,"corporation":false,"usgs":true,"family":"Jensen","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":455364,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036324,"text":"70036324 - 2011 - Age, composition, and areal distribution of the Pliocene Lawlor Tuff, and three younger Pliocene tuffs, California and Nevada","interactions":[],"lastModifiedDate":"2017-09-01T10:59:16","indexId":"70036324","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Age, composition, and areal distribution of the Pliocene Lawlor Tuff, and three younger Pliocene tuffs, California and Nevada","docAbstract":"The Lawlor Tuff is a widespread dacitic tephra layer produced by Plinian eruptions and ash flows derived from the Sonoma Volcanics, a volcanic area north of San Francisco Bay in the central Coast Ranges of California, USA. The younger, chemically similar Huichica tuff, the tuff of Napa, and the tuff of Monticello Road sequentially overlie the Lawlor Tuff, and were erupted from the same volcanic field. We obtain new laser-fusion and incremental-heating 40Ar/39Ar isochron and plateau ages of 4.834 ± 0.011, 4.76 ± 0.03, ≤4.70 ± 0.03, and 4.50 ± 0.02 Ma (1 sigma), respectively, for these layers. The ages are concordant with their stratigraphic positions and are significantly older than those determined previously by the K-Ar method on the same tuffs in previous studies.
Based on offsets of the ash-flow phase of the Lawlor Tuff by strands of the eastern San Andreas fault system within the northeastern San Francisco Bay area, total offset east of the Rodgers Creek–Healdsburg fault is estimated to be in the range of 36 to 56 km, with corresponding displacement rates between 8.4 and 11.6 mm/yr over the past ∼4.83 Ma.
We identify these tuffs by their chemical, petrographic, and magnetic characteristics over a large area in California and western Nevada, and at a number of new localities. They are thus unique chronostratigraphic markers that allow correlation of marine and terrestrial sedimentary and volcanic strata of early Pliocene age for their region of fallout. The tuff of Monticello Road is identified only near its eruptive source.
","language":"English","publisher":"The Geological Society of America","doi":"10.1130/GES00609.1","issn":"1553040X","usgsCitation":"Sarna-Wojcicki, A.M., Deino, A., Fleck, R.J., McLaughlin, R.J., Wagner, D., Wan, E., Wahl, D.B., Hillhouse, J.W., and Perkins, M., 2011, Age, composition, and areal distribution of the Pliocene Lawlor Tuff, and three younger Pliocene tuffs, California and Nevada: Geosphere, v. 7, no. 3, p. 599-628, https://doi.org/10.1130/GES00609.1.","productDescription":"30 p.","startPage":"599","endPage":"628","numberOfPages":"30","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-021607","costCenters":[{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":488018,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00609.1","text":"Publisher Index Page"},{"id":246372,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218371,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/GES00609.1"}],"country":"United States","state":"California, Nevada","volume":"7","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e8f4e4b0c8380cd47fe2","contributors":{"authors":[{"text":"Sarna-Wojcicki, Andrei M. 0000-0002-0244-9149 asarna@usgs.gov","orcid":"https://orcid.org/0000-0002-0244-9149","contributorId":1046,"corporation":false,"usgs":true,"family":"Sarna-Wojcicki","given":"Andrei","email":"asarna@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":455528,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Deino, Alan L.","contributorId":196103,"corporation":false,"usgs":false,"family":"Deino","given":"Alan L.","affiliations":[],"preferred":false,"id":455526,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fleck, Robert J. 0000-0002-3149-8249 fleck@usgs.gov","orcid":"https://orcid.org/0000-0002-3149-8249","contributorId":1048,"corporation":false,"usgs":true,"family":"Fleck","given":"Robert","email":"fleck@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":455524,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McLaughlin, Robert J. 0000-0002-4390-2288 rjmcl@usgs.gov","orcid":"https://orcid.org/0000-0002-4390-2288","contributorId":1428,"corporation":false,"usgs":true,"family":"McLaughlin","given":"Robert","email":"rjmcl@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":455529,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wagner, David","contributorId":196135,"corporation":false,"usgs":false,"family":"Wagner","given":"David","affiliations":[],"preferred":false,"id":455527,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wan, Elmira 0000-0002-9255-112X ewan@usgs.gov","orcid":"https://orcid.org/0000-0002-9255-112X","contributorId":3434,"corporation":false,"usgs":true,"family":"Wan","given":"Elmira","email":"ewan@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":455522,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wahl, David B. 0000-0002-0451-3554 dwahl@usgs.gov","orcid":"https://orcid.org/0000-0002-0451-3554","contributorId":3433,"corporation":false,"usgs":true,"family":"Wahl","given":"David","email":"dwahl@usgs.gov","middleInitial":"B.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":24693,"text":"Climate Research and Development","active":true,"usgs":true}],"preferred":true,"id":455521,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hillhouse, John W. 0000-0002-1371-4622 jhillhouse@usgs.gov","orcid":"https://orcid.org/0000-0002-1371-4622","contributorId":2618,"corporation":false,"usgs":true,"family":"Hillhouse","given":"John","email":"jhillhouse@usgs.gov","middleInitial":"W.","affiliations":[],"preferred":true,"id":455525,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Perkins, Michael","contributorId":10304,"corporation":false,"usgs":true,"family":"Perkins","given":"Michael","affiliations":[],"preferred":false,"id":455523,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70036329,"text":"70036329 - 2011 - An overview of the petroleum geology of the Arctic","interactions":[],"lastModifiedDate":"2021-01-19T18:08:08.736148","indexId":"70036329","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1784,"text":"Geological Society Memoir","active":true,"publicationSubtype":{"id":10}},"chapter":"1","title":"An overview of the petroleum geology of the Arctic","docAbstract":"Nine main petroleum provinces containing recoverable resources totalling 61 Bbbl liquids+269 Bbbloe of gas are known in the Arctic. The three best known major provinces are: West Siberia–South Kara, Arctic Alaska and Timan–Pechora. They have been sourced principally from, respectively, Upper Jurassic, Triassic and Devonian marine source rocks and their hydrocarbons are reservoired principally in Cretaceous sandstones, Triassic sandstones and Palaeozoic carbonates. The remaining six provinces except for the Upper Cretaceous–Palaeogene petroleum system in the Mackenzie Delta have predominantly Mesozoic sources and Jurassic reservoirs. There are discoveries in 15% of the total area of sedimentary basins (c. 8×106 km2), dry wells in 10% of the area, seismic but no wells in 50% and no seismic in 25%. The United States Geological Survey estimate yet-to-find resources to total 90 Bbbl liquids+279 Bbbloe gas, with four regions – South Kara Sea, Alaska, East Barents Sea, East Greenland – dominating. Russian estimates of South Kara Sea and East Barents Sea are equally positive. The large potential reflects primarily the large undrilled areas, thick basins and widespread source rocks.
","language":"English","publisher":"Geological Society of London","doi":"10.1144/M35.1","issn":"04354052","usgsCitation":"Spencer, A., Embry, A., Gautier, D.L., Stoupakova, A., and Sorensen, K., 2011, An overview of the petroleum geology of the Arctic: Geological Society Memoir, no. 35, p. 1-15, https://doi.org/10.1144/M35.1.","productDescription":"15 p.","startPage":"1","endPage":"15","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":246442,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218434,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1144/M35.1"}],"otherGeospatial":"Arctic","issue":"35","noUsgsAuthors":false,"publicationDate":"2011-08-05","publicationStatus":"PW","scienceBaseUri":"5059f465e4b0c8380cd4bce8","contributors":{"authors":[{"text":"Spencer, A.M.","contributorId":16256,"corporation":false,"usgs":true,"family":"Spencer","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":455541,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Embry, A.F.","contributorId":63253,"corporation":false,"usgs":true,"family":"Embry","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":455543,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gautier, Donald L. gautier@usgs.gov","contributorId":1310,"corporation":false,"usgs":true,"family":"Gautier","given":"Donald","email":"gautier@usgs.gov","middleInitial":"L.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":455544,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stoupakova, A.V.","contributorId":41270,"corporation":false,"usgs":true,"family":"Stoupakova","given":"A.V.","email":"","affiliations":[],"preferred":false,"id":455542,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sorensen, K.","contributorId":78676,"corporation":false,"usgs":true,"family":"Sorensen","given":"K.","email":"","affiliations":[],"preferred":false,"id":455545,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70036331,"text":"70036331 - 2011 - Barrier island response to late Holocene climate events, North Carolina, USA","interactions":[],"lastModifiedDate":"2021-01-18T21:05:41.317781","indexId":"70036331","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Barrier island response to late Holocene climate events, North Carolina, USA","docAbstract":"The Outer Banks barrier islands of North Carolina, USA, contain a geologic record of inlet activity that extends from ca. 2200 cal yr BP to the present, and can be used as a proxy for storm activity. Optically stimulated luminescence (OSL) dating (26 samples) of inlet-fill and flood tide delta deposits, recognized in cores and geophysical data, provides the basis for understanding the chronology of storm impacts and comparison to other paleoclimate proxy data. OSL ages of historical inlet fill compare favorably to historical documentation of inlet activity, providing confidence in the technique. Comparison suggests that the Medieval Warm Period (MWP) and Little Ice Age (LIA) were both characterized by elevated storm conditions as indicated by much greater inlet activity relative to today. Given present understanding of atmospheric circulation patterns and sea-surface temperatures during the MWP and LIA, we suggest that increased inlet activity during the MWP responded to intensified hurricane impacts, while elevated inlet activity during the LIA was in response to increased nor'easter activity. A general decrease in storminess at mid-latitudes in the North Atlantic over the last 300 yr has allowed the system to evolve into a more continuous barrier with few inlets.
","language":"English","publisher":"Cambridge University Press","doi":"10.1016/j.yqres.2011.05.001","issn":"00335894","usgsCitation":"Mallinson, D.J., Smith, C.W., Mahan, S., Culver, S., and McDowell, K., 2011, Barrier island response to late Holocene climate events, North Carolina, USA: Quaternary Research, v. 76, no. 1, p. 46-57, https://doi.org/10.1016/j.yqres.2011.05.001.","productDescription":"12 p.","startPage":"46","endPage":"57","costCenters":[],"links":[{"id":246476,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218464,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2011.05.001"}],"country":"United States","state":"North Carolina","otherGeospatial":"Barrier Islands","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -76.915283203125,\n 34.67839374011646\n ],\n [\n -75.333251953125,\n 34.67839374011646\n ],\n [\n -75.333251953125,\n 36.12900165569652\n ],\n [\n -76.915283203125,\n 36.12900165569652\n ],\n [\n -76.915283203125,\n 34.67839374011646\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"76","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059efbee4b0c8380cd4a418","contributors":{"authors":[{"text":"Mallinson, D. J.","contributorId":71745,"corporation":false,"usgs":true,"family":"Mallinson","given":"D.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":455562,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, C. W.","contributorId":57457,"corporation":false,"usgs":true,"family":"Smith","given":"C.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":455561,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mahan, S.","contributorId":98894,"corporation":false,"usgs":true,"family":"Mahan","given":"S.","email":"","affiliations":[],"preferred":false,"id":455563,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Culver, S.J.","contributorId":53970,"corporation":false,"usgs":true,"family":"Culver","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":455560,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"McDowell, K.","contributorId":10267,"corporation":false,"usgs":true,"family":"McDowell","given":"K.","email":"","affiliations":[],"preferred":false,"id":455559,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70036390,"text":"70036390 - 2011 - Causes of systematic over- or underestimation of low streamflows by use of index-streamgage approaches in the United States","interactions":[],"lastModifiedDate":"2013-05-23T14:51:50","indexId":"70036390","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Causes of systematic over- or underestimation of low streamflows by use of index-streamgage approaches in the United States","docAbstract":"Low-flow characteristics can be estimated by multiple linear regressions or the index-streamgage approach. The latter transfers streamflow information from a hydrologically similar, continuously gaged basin ('index streamgage') to one with a very limited streamflow record, but often results in biased estimates. The application of the index-streamgage approach can be generalized into three steps: (1) selection of streamflow information of interest, (2) definition of hydrologic similarity and selection of index streamgage, and (3) application of an information-transfer approach. Here, we explore the effects of (1) the range of streamflow values, (2) the areal density of streamgages, and (3) index-streamgage selection criteria on the bias of three information-transfer approaches on estimates of the 7-day, 10-year minimum streamflow (Q7, 10). The three information-transfer approaches considered are maintenance of variance extension, base-flow correlation, and ratio of measured to concurrent gaged streamflow (Q-ratio invariance). Our results for 1120 streamgages throughout the United States suggest that only a small portion of the total bias in estimated streamflow values is explained by the areal density of the streamgages and the hydrologic similarity between the two basins. However, restricting the range of streamflow values used in the index-streamgage approach reduces the bias of estimated Q7, 10 values substantially. Importantly, estimated Q7, 10 values are heavily biased when the observed Q7, 10 values are near zero. Results of the analysis also showed that Q7, 10 estimates from two of the three index-streamgage approaches have lower root-mean-square error values than estimates derived from multiple regressions for the large regions considered in this study.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1002/hyp.7976","issn":"08856087","usgsCitation":"Eng, K., Kiang, J., Chen, Y., Carlisle, D., and Granato, G., 2011, Causes of systematic over- or underestimation of low streamflows by use of index-streamgage approaches in the United States: Hydrological Processes, v. 25, no. 14, p. 2211-2220, https://doi.org/10.1002/hyp.7976.","productDescription":"10 p.","startPage":"2211","endPage":"2220","costCenters":[{"id":437,"text":"National Research Program - Eastern Region","active":false,"usgs":true}],"links":[{"id":246377,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218375,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.7976"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 172.5,19.0 ], [ 172.5,71.4 ], [ -70.0,71.4 ], [ -70.0,19.0 ], [ 172.5,19.0 ] ] ] } } ] }","volume":"25","issue":"14","noUsgsAuthors":false,"publicationDate":"2011-02-09","publicationStatus":"PW","scienceBaseUri":"5059f3d6e4b0c8380cd4b9c5","contributors":{"authors":[{"text":"Eng, K.","contributorId":51063,"corporation":false,"usgs":true,"family":"Eng","given":"K.","email":"","affiliations":[],"preferred":false,"id":455871,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kiang, J.E.","contributorId":101058,"corporation":false,"usgs":true,"family":"Kiang","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":455875,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chen, Y.-Y.","contributorId":52018,"corporation":false,"usgs":true,"family":"Chen","given":"Y.-Y.","email":"","affiliations":[],"preferred":false,"id":455872,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carlisle, D.M.","contributorId":81059,"corporation":false,"usgs":true,"family":"Carlisle","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":455874,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Granato, G.E.","contributorId":61457,"corporation":false,"usgs":true,"family":"Granato","given":"G.E.","affiliations":[],"preferred":false,"id":455873,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70036391,"text":"70036391 - 2011 - Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma","interactions":[],"lastModifiedDate":"2026-01-27T18:54:32.706382","indexId":"70036391","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1065,"text":"Boletin Geologico y Minero","active":true,"publicationSubtype":{"id":10}},"title":"Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma","docAbstract":"Shale gas is a form of continuous unconventional hydrocarbon accumulation whose resource estimation is unfeasible through the inference of pore volume. Under these circumstances, the usual approach is to base the assessment on well productivity through estimated ultimate recovery (EUR). Unconventional resource assessments that consider uncertainty are typically done by applying analytical procedures based on classical statistics theory that ignores geographical location, does not take into account spatial correlation, and assumes independence of EUR from other variables that may enter into the modeling. We formulate a new, more comprehensive approach based on sequential simulation to test methodologies known to be capable of more fully utilizing the data and overcoming unrealistic simplifications. Theoretical requirements demand modeling of EUR as areal density instead of well EUR. The new experimental methodology is illustrated by evaluating a gas play in the Woodford Shale in the Arkoma Basin of Oklahoma. Differently from previous assessments, we used net thickness and vitrinite reflectance as secondary variables correlated to cell EUR. In addition to the traditional probability distribution for undiscovered resources, the new methodology provides maps of EUR density and maps with probabilities to reach any given cell EUR, which are useful to visualize geographical variations in prospectivity.
","language":"English, Spanish","issn":"03660176","usgsCitation":"Olea, R., Houseknecht, D., Garrity, C., and Cook, T.A., 2011, Formulation of a correlated variables methodology for assessment of continuous gas resources with an application to the Woodford play, Arkoma Basin, eastern Oklahoma: Boletin Geologico y Minero, v. 122, no. 4, p. 483-496.","productDescription":"14 p.","startPage":"483","endPage":"496","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-024393","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":246409,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oklahoma","otherGeospatial":"Arkoma Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -94.48688507080078,\n 35.23664622093195\n ],\n [\n -94.43744659423828,\n 35.23664622093195\n ],\n [\n -94.43744659423828,\n 35.35881619143943\n ],\n [\n -94.48688507080078,\n 35.35881619143943\n ],\n [\n -94.48688507080078,\n 35.23664622093195\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"122","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a135ce4b0c8380cd5462c","contributors":{"authors":[{"text":"Olea, Ricardo A. 0000-0003-4308-0808","orcid":"https://orcid.org/0000-0003-4308-0808","contributorId":26436,"corporation":false,"usgs":true,"family":"Olea","given":"Ricardo A.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":455877,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, D.W. 0000-0002-9633-6910","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":33695,"corporation":false,"usgs":true,"family":"Houseknecht","given":"D.W.","affiliations":[],"preferred":false,"id":455878,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Garrity, C.P. 0000-0002-5565-1818","orcid":"https://orcid.org/0000-0002-5565-1818","contributorId":10021,"corporation":false,"usgs":true,"family":"Garrity","given":"C.P.","affiliations":[],"preferred":false,"id":455876,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cook, T. A.","contributorId":60169,"corporation":false,"usgs":true,"family":"Cook","given":"T.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":455879,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036414,"text":"70036414 - 2011 - Changes in monoterpene mixing ratios during summer storms in rural New Hampshire (USA)","interactions":[],"lastModifiedDate":"2021-01-12T17:54:49.252301","indexId":"70036414","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":922,"text":"Atmospheric Chemistry and Physics","active":true,"publicationSubtype":{"id":10}},"title":"Changes in monoterpene mixing ratios during summer storms in rural New Hampshire (USA)","docAbstract":"Monoterpenes are an important class of biogenic hydrocarbons that influence ambient air quality and are a principle source of secondary organic aerosol (SOA). Emitted from vegetation, monoterpenes are a product of photosynthesis and act as a response to a variety of environmental factors. Most parameterizations of monoterpene emissions are based on clear weather models that do not take into account episodic conditions that can drastically change production and release rates into the atmosphere. Here, the monoterpene dataset from the rural Thompson Farm measurement site in Durham, New Hampshire is examined in the context of a set of known severe storm events. While some storm systems had a negligible influence on ambient monoterpene mixing ratios, the average storm event increased mixing ratios by 0.59 ± 0.21 ppbv, a factor of 93% above pre-storm levels. In some events, mixing ratios reached the 10's of ppbv range and persisted overnight. These mixing ratios correspond to increases in the monoterpene emission rate, ranging from 120 to 1240 g km−2 h−1 compared to an estimated clear weather rate of 116 to 193 g km−2 h−1. Considering the regularity of storm events over most forested areas, this could be an important factor to consider when modeling global monoterpene emissions and their resulting influence on the formation of organic aerosols.
","language":"English","publisher":"Copernicus Publications","publisherLocation":"Göttingen, Germany","doi":"10.5194/acp-11-11465-2011","issn":"16807316","usgsCitation":"Haase, K.B., Jordan, C., Mentis, E., Cottrell, L., Mayne, H., Talbot, R., and Sive, B., 2011, Changes in monoterpene mixing ratios during summer storms in rural New Hampshire (USA): Atmospheric Chemistry and Physics, v. 11, no. 22, p. 11465-11476, https://doi.org/10.5194/acp-11-11465-2011.","productDescription":"9 p.","startPage":"11465","endPage":"11476","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true}],"links":[{"id":475112,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/acp-11-11465-2011","text":"Publisher Index Page"},{"id":246256,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218261,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.5194/acp-11-11465-2011"}],"country":"United States","state":"New Hampshire","otherGeospatial":"Thompson Farm","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.35345458984375,\n 42.92626291864936\n ],\n [\n -70.740966796875,\n 42.92626291864936\n ],\n [\n -70.740966796875,\n 43.329173667843904\n ],\n [\n -71.35345458984375,\n 43.329173667843904\n ],\n [\n -71.35345458984375,\n 42.92626291864936\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"11","issue":"22","noUsgsAuthors":false,"publicationDate":"2011-11-17","publicationStatus":"PW","scienceBaseUri":"5059f41ce4b0c8380cd4bb4b","contributors":{"authors":[{"text":"Haase, Karl B. 0000-0002-6897-6494 khaase@usgs.gov","orcid":"https://orcid.org/0000-0002-6897-6494","contributorId":3405,"corporation":false,"usgs":true,"family":"Haase","given":"Karl","email":"khaase@usgs.gov","middleInitial":"B.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":456018,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jordan, C.","contributorId":17454,"corporation":false,"usgs":true,"family":"Jordan","given":"C.","email":"","affiliations":[],"preferred":false,"id":456019,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mentis, E.","contributorId":62441,"corporation":false,"usgs":true,"family":"Mentis","given":"E.","email":"","affiliations":[],"preferred":false,"id":456021,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cottrell, L.","contributorId":64925,"corporation":false,"usgs":true,"family":"Cottrell","given":"L.","email":"","affiliations":[],"preferred":false,"id":456022,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mayne, H.R.","contributorId":21016,"corporation":false,"usgs":true,"family":"Mayne","given":"H.R.","email":"","affiliations":[],"preferred":false,"id":456020,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Talbot, R.","contributorId":67758,"corporation":false,"usgs":true,"family":"Talbot","given":"R.","email":"","affiliations":[],"preferred":false,"id":456024,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Sive, B.C.","contributorId":66518,"corporation":false,"usgs":true,"family":"Sive","given":"B.C.","email":"","affiliations":[],"preferred":false,"id":456023,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70036438,"text":"70036438 - 2011 - Age and tectonic setting of the Mesozoic McCoy Mountains Formation in western Arizona, USA","interactions":[],"lastModifiedDate":"2021-01-11T17:57:40.152919","indexId":"70036438","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Age and tectonic setting of the Mesozoic McCoy Mountains Formation in western Arizona, USA","docAbstract":"The McCoy Mountains Formation consists of Upper Jurassic to Upper Cretaceous siltstone, sandstone, and conglomerate exposed in an east-west–trending belt in southwestern Arizona and southeastern California. At least three different tectonic settings have been proposed for McCoy deposition, and multiple tectonic settings are likely over the ∼80 m.y. age range of deposition. U-Pb isotopic analysis of 396 zircon sand grains from at or near the top of McCoy sections in the southern Little Harquahala, Granite Wash, New Water, and southern Plomosa Mountains, all in western Arizona, identified only Jurassic or older zircons. A basaltic lava flow near the top of the section in the New Water Mountains yielded a U-Pb zircon date of 154.4 ± 2.1 Ma. Geochemically similar lava flows and sills in the Granite Wash and southern Plomosa Mountains are inferred to be approximately the same age. We interpret these new analyses to indicate that Mesozoic clastic strata in these areas are Upper Jurassic and are broadly correlative with the lowermost McCoy Mountains Formation in the Dome Rock, McCoy, and Palen Mountains farther west. Six samples of numerous Upper Jurassic basaltic sills and lava flows in the McCoy Mountains Formation in the Granite Wash, New Water, and southern Plomosa Mountains yielded initial εNd values (at t = 150 Ma) of between +4 and +6. The geochemistry and geochronology of this igneous suite, and detrital-zircon geochronology of the sandstones, support the interpretation that the lower McCoy Mountains Formation was deposited during rifting within the western extension of the Sabinas-Chihuahua-Bisbee rift belt. Abundant 190–240 Ma zircon sand grains were derived from nearby, unidentified Triassic magmatic-arc rocks in areas that were unaffected by younger Jurassic magmatism. A sandstone from the upper McCoy Mountains Formation in the Dome Rock Mountains (Arizona) yielded numerous 80–108 Ma zircon grains and almost no 190–240 Ma grains, revealing a major reorganization in sediment-dispersal pathways and/or modification of source rocks that had occurred by ca. 80 Ma.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/B30206.1","issn":"00167606","usgsCitation":"Spencer, J., Richard, S., Gehrels, G.E., Gleason, J., and Dickinson, W., 2011, Age and tectonic setting of the Mesozoic McCoy Mountains Formation in western Arizona, USA: Geological Society of America Bulletin, v. 123, no. 7-8, p. 1258-1274, https://doi.org/10.1130/B30206.1.","productDescription":"17 p.","startPage":"1258","endPage":"1274","costCenters":[],"links":[{"id":246131,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218146,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B30224.1"}],"country":"United States","state":"Arizona","otherGeospatial":"McCoy Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -115.13671875,\n 33.17434155100208\n ],\n [\n -113.0712890625,\n 33.17434155100208\n ],\n [\n -113.0712890625,\n 34.05265942137599\n ],\n [\n -115.13671875,\n 34.05265942137599\n ],\n [\n -115.13671875,\n 33.17434155100208\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"123","issue":"7-8","noUsgsAuthors":false,"publicationDate":"2011-01-26","publicationStatus":"PW","scienceBaseUri":"5059e8e3e4b0c8380cd47f4f","contributors":{"authors":[{"text":"Spencer, J.E.","contributorId":91542,"corporation":false,"usgs":true,"family":"Spencer","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":456169,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Richard, S.M.","contributorId":20376,"corporation":false,"usgs":true,"family":"Richard","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":456166,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gehrels, G. E.","contributorId":9660,"corporation":false,"usgs":true,"family":"Gehrels","given":"G.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":456165,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gleason, J.D.","contributorId":27072,"corporation":false,"usgs":true,"family":"Gleason","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":456167,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dickinson, W.R.","contributorId":64801,"corporation":false,"usgs":true,"family":"Dickinson","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":456168,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70036439,"text":"70036439 - 2011 - Location and agricultural practices influence spring use of harvested cornfields by cranes and geese in Nebraska","interactions":[],"lastModifiedDate":"2021-01-11T17:41:48.795813","indexId":"70036439","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":"Location and agricultural practices influence spring use of harvested cornfields by cranes and geese in Nebraska","docAbstract":"Millions of ducks, geese, and sandhill cranes (Grus canadensis; hereafter cranes) stop in the Central Platte River Valley (CPRV) of Nebraska to store nutrients for migration and reproduction by consuming corn remaining in fields after harvest. We examined factors that influence use of cornfields by cranes and geese (all mid‐continent species combined; e.g., Anser, Chen, and Branta spp.) because it is a key step to efficient conservation planning aimed at ensuring that adequate food resources are available to migratory birds stopping in the CPRV. Distance to night‐time roost site, segment of the CPRV (west to east), and agricultural practices (post‐harvest treatment of cornfields: idle, grazed, mulched, mulched and grazed, and tilled) were the most important and influential variables in our models for geese and cranes. Probability of cornfield use by geese and cranes decreased with increasing distance from the closest potential roosting site. The use of cornfields by geese increased with the density of corn present there during the early migration period, but field use by cranes appeared not to be influenced by early migration corn density. However, probability of cornfield use by cranes did increase with the amount of wet grassland habitat within 4.8 km of the field. Geese were most likely to use fields that were tilled and least likely to use fields that were mulched and grazed. Cranes were most likely to use fields that were mulched and least likely to use fields that were tilled, but grazing appeared not to influence the likelihood of field use by cranes. Geese were more likely to use cornfields in western segments of the CPRV, but cranes were more likely to use cornfields in eastern segments. Our data suggest that managers could favor crane use of fields and reduce direct competition with geese by reducing fall and spring tilling and increasing mulching. Moreover, crane conservation efforts would be most beneficial if they were focused in the eastern portions of the CPRV and in fields as close as possible to both known roosting and large amounts of wet grassland habitats.
","language":"English","publisher":"The Wildlife Society","doi":"10.1002/jwmg.135","issn":"0022541X","usgsCitation":"Anteau, M.J., Sherfy, M.H., and Bishop, A., 2011, Location and agricultural practices influence spring use of harvested cornfields by cranes and geese in Nebraska: Journal of Wildlife Management, v. 75, no. 5, p. 1004-1011, https://doi.org/10.1002/jwmg.135.","productDescription":"8 p.","startPage":"1004","endPage":"1011","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":246132,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":218147,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/jwmg.135"}],"country":"United States","state":"Nebraska","otherGeospatial":"Central Platte River Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -99.6240234375,\n 40.91351257612758\n ],\n [\n -99.55810546875,\n 40.56389453066509\n ],\n [\n -98.41552734375,\n 40.56389453066509\n ],\n [\n -98.06396484375,\n 40.730608477796636\n ],\n [\n -98.02001953125,\n 40.97989806962013\n ],\n [\n -98.6572265625,\n 40.93011520598305\n ],\n [\n -99.6240234375,\n 40.91351257612758\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"75","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-04-21","publicationStatus":"PW","scienceBaseUri":"505a4903e4b0c8380cd682d0","contributors":{"authors":[{"text":"Anteau, Michael J. 0000-0002-5173-5870 manteau@usgs.gov","orcid":"https://orcid.org/0000-0002-5173-5870","contributorId":3427,"corporation":false,"usgs":true,"family":"Anteau","given":"Michael","email":"manteau@usgs.gov","middleInitial":"J.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":456170,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sherfy, Mark H. 0000-0003-3016-4105 msherfy@usgs.gov","orcid":"https://orcid.org/0000-0003-3016-4105","contributorId":125,"corporation":false,"usgs":true,"family":"Sherfy","given":"Mark","email":"msherfy@usgs.gov","middleInitial":"H.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":456171,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bishop, A.A.","contributorId":48423,"corporation":false,"usgs":true,"family":"Bishop","given":"A.A.","email":"","affiliations":[],"preferred":false,"id":456172,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036459,"text":"70036459 - 2011 - Whole-edifice ice volume change A.D. 1970 to 2007/2008 at Mount Rainier, Washington, based on LiDAR surveying","interactions":[],"lastModifiedDate":"2012-12-05T12:11:14","indexId":"70036459","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Whole-edifice ice volume change A.D. 1970 to 2007/2008 at Mount Rainier, Washington, based on LiDAR surveying","docAbstract":"Net changes in thickness and volume of glacial ice and perennial snow at Mount Rainier, Washington State, have been mapped over the entire edifice by differencing between a highresolution LiDAR (light detection and ranging) topographic survey of September-October 2007/2008 and the 10 m lateral resolution U.S. Geological Survey digital elevation model derived from September 1970 aerial photography. Excepting the large Emmons and Winthrop Glaciers, all of Mount Rainier's glaciers thinned and retreated in their terminal regions, with substantial thinning mainly at elevations <2000 m and the greatest thinning on southfacing glaciers. Mount Rainier's glaciers and snowfields also lost volume over the interval, excepting the east-flank Fryingpan and Emmons Glaciers and minor near-summit snowfields; maximum volume losses were centered from ~1750 m (north flank) to ~2250 m (south fl ank) elevation. The greatest single volume loss was from the Carbon Glacier, despite its northward aspect, due to its sizeable area at <2000 m elevation. Overall, Mount Rainier lost ~14 vol% glacial ice and perennial snow over the 37 to 38 yr interval between surveys. Enhanced thinning of south-flank glaciers may be meltback from the high snowfall period of the mid-1940s to mid-1970s associated with the cool phase of the Pacific Decadal Oscillation.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geological Society of America","publisherLocation":"Boulder, CO","doi":"10.1130/G31902.1","isbn":"00917613","usgsCitation":"Sisson, T.W., Robinson, J., and Swinney, D., 2011, Whole-edifice ice volume change A.D. 1970 to 2007/2008 at Mount Rainier, Washington, based on LiDAR surveying: Geology, v. 39, no. 7, p. 639-642, https://doi.org/10.1130/G31902.1.","productDescription":"4 p.","startPage":"639","endPage":"642","numberOfPages":"4","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":218439,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G31902.1"},{"id":246449,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Mount Rainier","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.876709,46.787719 ], [ -121.876709,46.939905 ], [ -121.638906,46.939905 ], [ -121.638906,46.787719 ], [ -121.876709,46.787719 ] ] ] } } ] }","volume":"39","issue":"7","noUsgsAuthors":false,"publicationDate":"2011-07-01","publicationStatus":"PW","scienceBaseUri":"505bd089e4b08c986b32eef4","contributors":{"authors":[{"text":"Sisson, T. W.","contributorId":108120,"corporation":false,"usgs":true,"family":"Sisson","given":"T.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":456247,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robinson, J.E.","contributorId":53100,"corporation":false,"usgs":true,"family":"Robinson","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":456245,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swinney, D.D.","contributorId":88191,"corporation":false,"usgs":true,"family":"Swinney","given":"D.D.","email":"","affiliations":[],"preferred":false,"id":456246,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036464,"text":"70036464 - 2011 - Sibship reconstruction for inferring mating systems, dispersal and effective population size in headwater brook trout (Salvelinus fontinalis) populations","interactions":[],"lastModifiedDate":"2016-08-21T16:45:19","indexId":"70036464","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1324,"text":"Conservation Genetics","active":true,"publicationSubtype":{"id":10}},"title":"Sibship reconstruction for inferring mating systems, dispersal and effective population size in headwater brook trout (Salvelinus fontinalis) populations","docAbstract":"Brook trout Salvelinus fontinalis populations have declined in much of the native range in eastern North America and populations are typically relegated to small headwater streams in Connecticut, USA. We used sibship reconstruction to infer mating systems, dispersal and effective population size of resident (non-anadromous) brook trout in two headwater stream channel networks in Connecticut. Brook trout were captured via backpack electrofishing using spatially continuous sampling in the two headwaters (channel network lengths of 4.4 and 7.7 km). Eight microsatellite loci were genotyped in a total of 740 individuals (80–140 mm) subsampled in a stratified random design from all 50 m-reaches in which trout were captured. Sibship reconstruction indicated that males and females were both mostly polygamous although single pair matings were also inferred. Breeder sex ratio was inferred to be nearly 1:1. Few large-sized fullsib families (>3 individuals) were inferred and the majority of individuals were inferred to have no fullsibs among those fish genotyped (family size = 1). The median stream channel distance between pairs of individuals belonging to the same large-sized fullsib families (>3 individuals) was 100 m (range: 0–1,850 m) and 250 m (range: 0–2,350 m) in the two study sites, indicating limited dispersal at least for the size class of individuals analyzed. Using a sibship assignment method, the effective population size for the two streams was estimated at 91 (95%CI: 67–123) and 210 (95%CI: 172–259), corresponding to the ratio of effective-to-census population size of 0.06 and 0.12, respectively. Both-sex polygamy, low variation in reproductive success, and a balanced sex ratio may help maintain genetic diversity of brook trout populations with small breeder sizes persisting in headwater channel networks.
\n","language":"English","publisher":"Kluwer Academic Publishers","doi":"10.1007/s10592-010-0166-9","issn":"15660621","usgsCitation":"Kanno, Y., Vokoun, J.C., and Letcher, B., 2011, Sibship reconstruction for inferring mating systems, dispersal and effective population size in headwater brook trout (Salvelinus fontinalis) populations: Conservation Genetics, v. 12, no. 3, p. 619-628, https://doi.org/10.1007/s10592-010-0166-9.","productDescription":"10 p.","startPage":"619","endPage":"628","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":246520,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Connecticut","otherGeospatial":"Jefferson Hill-Spruce Brook, Kent Falls Brook","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -73.46832275390624,\n 41.64213096472801\n ],\n [\n -73.46832275390624,\n 41.98195261665715\n ],\n [\n -72.8778076171875,\n 41.98195261665715\n ],\n [\n -72.8778076171875,\n 41.64213096472801\n ],\n [\n -73.46832275390624,\n 41.64213096472801\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"12","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-11-25","publicationStatus":"PW","scienceBaseUri":"505b8eeee4b08c986b318c23","contributors":{"authors":[{"text":"Kanno, Yoichiro ykanno@usgs.gov","contributorId":4876,"corporation":false,"usgs":true,"family":"Kanno","given":"Yoichiro","email":"ykanno@usgs.gov","affiliations":[],"preferred":true,"id":456267,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vokoun, Jason C.","contributorId":173912,"corporation":false,"usgs":false,"family":"Vokoun","given":"Jason","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":456269,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Letcher, Benjamin H. 0000-0003-0191-5678 bletcher@usgs.gov","orcid":"https://orcid.org/0000-0003-0191-5678","contributorId":2864,"corporation":false,"usgs":true,"family":"Letcher","given":"Benjamin H.","email":"bletcher@usgs.gov","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":456268,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70036529,"text":"70036529 - 2011 - Connecting the Yakima fold and thrust belt to active faults in the Puget Lowland, Washington","interactions":[],"lastModifiedDate":"2018-03-23T12:29:03","indexId":"70036529","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Connecting the Yakima fold and thrust belt to active faults in the Puget Lowland, Washington","docAbstract":"High-resolution aeromagnetic surveys of the Cascade Range and Yakima fold and thrust belt (YFTB), Washington, provide insights on tectonic connections between forearc and back-arc regions of the Cascadia convergent margin. Magnetic surveys were measured at a nominal altitude of 250 m above terrain and along flight lines spaced 400 m apart. Upper crustal rocks in this region have diverse magnetic properties, ranging from highly magnetic rocks of the Miocene Columbia River Basalt Group to weakly magnetic sedimentary rocks of various ages. These distinctive magnetic properties permit mapping of important faults and folds from exposures to covered areas. Magnetic lineaments correspond with mapped Quaternary faults and with scarps identified in lidar (light detection and ranging) topographic data and aerial photography. A two-dimensional model of the northwest striking Umtanum Ridge fault zone, based on magnetic and gravity data and constrained by geologic mapping and three deep wells, suggests that thrust faults extend through the Tertiary section and into underlying pre-Tertiary basement. Excavation of two trenches across a prominent scarp at the base of Umtanum Ridge uncovered evidence for bending moment faulting possibly caused by a blind thrust. Using aeromagnetic, gravity, and paleoseismic evidence, we postulate possible tectonic connections between the YFTB in eastern Washington and active faults of the Puget Lowland. We suggest that faults and folds of Umtanum Ridge extend northwestward through the Cascade Range and merge with the Southern Whidbey Island and Seattle faults near Snoqualmie Pass 35 km east of Seattle. Recent earthquakes (MW ≤ 5.3) suggest that this confluence of faults may be seismically active today.","language":"English","publisher":"AGU","publisherLocation":"Washington, D.C.","doi":"10.1029/2010JB008091","issn":"01480227","usgsCitation":"Blakely, R., Sherrod, B., Weaver, C., Wells, R., Rohay, A., Barnett, E.A., and Knepprath, N., 2011, Connecting the Yakima fold and thrust belt to active faults in the Puget Lowland, Washington: Journal of Geophysical Research B: Solid Earth, v. 116, no. B7, B07105, https://doi.org/10.1029/2010JB008091.","productDescription":"B07105","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":475260,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010jb008091","text":"Publisher Index Page"},{"id":245780,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217808,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010JB008091"}],"datum":"United States","country":"United States","state":"Washington","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.84,45.54 ], [ -124.84,49.0 ], [ -116.92,49.0 ], [ -116.92,45.54 ], [ -124.84,45.54 ] ] ] } } ] }","volume":"116","issue":"B7","noUsgsAuthors":false,"publicationDate":"2011-07-28","publicationStatus":"PW","scienceBaseUri":"5059f9cae4b0c8380cd4d7a8","contributors":{"authors":[{"text":"Blakely, R.J. 0000-0003-1701-5236","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":70755,"corporation":false,"usgs":true,"family":"Blakely","given":"R.J.","affiliations":[],"preferred":false,"id":456570,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sherrod, B.L.","contributorId":68937,"corporation":false,"usgs":true,"family":"Sherrod","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":456569,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weaver, C.S.","contributorId":57874,"corporation":false,"usgs":true,"family":"Weaver","given":"C.S.","email":"","affiliations":[],"preferred":false,"id":456567,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wells, R.E. 0000-0002-7796-0160","orcid":"https://orcid.org/0000-0002-7796-0160","contributorId":67537,"corporation":false,"usgs":true,"family":"Wells","given":"R.E.","affiliations":[],"preferred":false,"id":456568,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rohay, A.C.","contributorId":52819,"corporation":false,"usgs":true,"family":"Rohay","given":"A.C.","email":"","affiliations":[],"preferred":false,"id":456566,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Barnett, E. A.","contributorId":16081,"corporation":false,"usgs":true,"family":"Barnett","given":"E.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":456565,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Knepprath, N.E.","contributorId":94896,"corporation":false,"usgs":true,"family":"Knepprath","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":456571,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70036533,"text":"70036533 - 2011 - The dazed and confused identity of Agassiz's land tortoise, Gopherus agassizii (Testudines, Testudinidae) with the description of a new species, and its consequences for conservation","interactions":[],"lastModifiedDate":"2021-01-05T19:48:49.951404","indexId":"70036533","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3808,"text":"ZooKeys","active":true,"publicationSubtype":{"id":10}},"title":"The dazed and confused identity of Agassiz's land tortoise, Gopherus agassizii (Testudines, Testudinidae) with the description of a new species, and its consequences for conservation","docAbstract":"
We investigate a cornucopia of problems associated with the identity of the desert tortoise, Gopherus agassizii (Cooper). The date of publication is found to be 1861, rather than 1863. Only one of the three original cotypes exists, and it is designated as the lectotype of the species. Another cotype is found to have been destroyed in the 1906 San Francisco earthquake and subsequent fire. The third is lost. The lectotype is genetically confirmed to be from California, and not Arizona, USA as sometimes reported. Maternally, the holotype of Gopherus lepidocephalus (Ottley & Velázques Solis. 1989) from the Cape Region of Baja California Sur, Mexico is also from the Mojavian population of the desert tortoise, and not from Tiburon Island, Sonora, Mexico as previously proposed. A suite of characters serve to diagnose tortoises west and north of the Colorado River, the Mojavian population, from those east and south of the river in Arizona, USA, and Sonora and Sinaloa, Mexico, the Sonoran population. Species recognition is warranted and because Gopherus lepidocephalus is from the Mojavian population, no names are available for the Sonoran species. Thus, a new species, Gopherus morafkai sp. n., is named and this action reduces the distribution of Gopherus agassizii to only 30% of its former range. This reduction has important implications for the conservation and protection of Gopherus agassizii, which may deserve a higher level of protection.
","language":"English","publisher":"Pensoft Publishers","doi":"10.3897/zookeys.113.1353","issn":"13132989","usgsCitation":"Murphy, R., Berry, K., Edwards, T., Leviton, A., Lathrop, A., and Riedle, J., 2011, The dazed and confused identity of Agassiz's land tortoise, Gopherus agassizii (Testudines, Testudinidae) with the description of a new species, and its consequences for conservation: ZooKeys, v. 113, p. 39-41, https://doi.org/10.3897/zookeys.113.1353.","productDescription":"3 p.","startPage":"39","endPage":"41","costCenters":[],"links":[{"id":475423,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3897/zookeys.113.1353","text":"Publisher Index Page"},{"id":245841,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217868,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3897/zookeys.113.1353"}],"country":"United States, Mexico","state":"California, Nevada, Arizona, Sonora,","otherGeospatial":"Baja California Sur","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -115.31249999999999,\n 32.69486597787505\n ],\n [\n -115.04882812499999,\n 32.43561304116276\n ],\n [\n -115.13671875,\n 31.87755764334002\n ],\n [\n -114.7412109375,\n 31.541089879585808\n ],\n [\n -113.203125,\n 31.316101383495624\n ],\n [\n -112.67578124999999,\n 29.916852233070173\n ],\n [\n -112.8955078125,\n 29.53522956294847\n ],\n [\n -112.5,\n 28.57487404744697\n ],\n [\n -111.9287109375,\n 28.65203063036226\n ],\n [\n -109.4677734375,\n 26.23430203240673\n ],\n [\n -108.369140625,\n 26.78484736105119\n ],\n [\n -109.16015624999999,\n 28.188243641850313\n ],\n [\n -110.91796875,\n 29.916852233070173\n ],\n [\n -109.86328125,\n 31.466153715024294\n ],\n [\n -110.56640625,\n 32.99023555965106\n ],\n [\n -111.8408203125,\n 34.88593094075317\n ],\n [\n -113.291015625,\n 36.4566360115962\n ],\n [\n -117.02636718749999,\n 37.020098201368114\n ],\n [\n -118.0810546875,\n 35.53222622770337\n ],\n [\n -116.76269531249999,\n 34.161818161230386\n ],\n [\n -115.31249999999999,\n 32.69486597787505\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"113","noUsgsAuthors":false,"publicationDate":"2011-06-28","publicationStatus":"PW","scienceBaseUri":"505baa82e4b08c986b32286f","contributors":{"authors":[{"text":"Murphy, R. W.","contributorId":89840,"corporation":false,"usgs":false,"family":"Murphy","given":"R. W.","affiliations":[],"preferred":false,"id":456588,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Berry, K.H.","contributorId":17934,"corporation":false,"usgs":true,"family":"Berry","given":"K.H.","email":"","affiliations":[],"preferred":false,"id":456583,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Edwards, T.","contributorId":59743,"corporation":false,"usgs":true,"family":"Edwards","given":"T.","email":"","affiliations":[],"preferred":false,"id":456586,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leviton, A.E.","contributorId":18870,"corporation":false,"usgs":true,"family":"Leviton","given":"A.E.","affiliations":[],"preferred":false,"id":456584,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lathrop, A.","contributorId":49484,"corporation":false,"usgs":true,"family":"Lathrop","given":"A.","email":"","affiliations":[],"preferred":false,"id":456585,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Riedle, J.D.","contributorId":87269,"corporation":false,"usgs":true,"family":"Riedle","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":456587,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ]}