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183909 results.

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Page 1934, results 48326 - 48350

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Use of multiple dispersal pathways facilitates amphibian persistence in stream networks
Grant E.H. Campbell, J.D. Nichols, W.H. Lowe, W.F. Fagan
2010, Proceedings of the National Academy of Sciences of the United States of America (107) 6936-6940
Although populations of amphibians are declining worldwide, there is no evidence that salamanders occupying small streams are experiencing enigmatic declines, and populations of these species seem stable. Theory predicts that dispersal through multiple pathways can stabilize populations, preventing extinction in habitat networks. However, empirical data to support this prediction are...
Abundances and distribution of minerals and elements in high-alumina coal fly ash from the Jungar Power Plant, Inner Mongolia, China
S. Dai, L. Zhao, S. Peng, C. L. Chou, X. Wang, Y. Zhang, D. Li, Y. Sun
2010, International Journal of Coal Geology (81) 320-332
The fly ash from the Jungar Power Plant, Inner Mongolia, China, is unique because it is highly enriched in alumina (Al2O3>50%). The fly ash mainly consists of amorphous glass and mullite and trace amounts of corundum, quartz, char, calcite, K-feldspar, clay minerals, and Fe-bearing minerals. The mullite content in fly...
The vegetation outlook (VegOut): a new method for predicting vegetation seasonal greenness
T. Tadesse, B. Wardlow, M. Hayes, M. Svoboda, J. Brown
2010, GIScience and Remote Sensing (47) 25-52
The vegetation outlook (VegOut) is a geospatial tool for predicting general vegetation condition patterns across large areas. VegOut predicts a standardized seasonal greenness (SSG) measure, which represents a general indicator of relative vegetation health. VegOut predicts SSG values at multiple time steps (two to six weeks into the future) based...
Potential environmental influences on variation in body size and sexual size dimorphism among Arizona populations of the western diamond-backed rattlesnake (Crotalus atrox)
Melissa Amarello, Erica M. Nowak, Emily N. Taylor, Gordon W. Schuett, Roger A. Repp, Philip C. Rosen, David L. Hardy Sr.
2010, Journal of Arid Environments (74) 1443-1449
Differences in resource availability and quality along environmental gradients are important influences contributing to intraspecific variation in body size, which influences numerous life-history traits. Here, we examined variation in body size and sexual size dimorphism (SSD) in relation to temperature, seasonality, and precipitation among 10 populations located throughout Arizona of...
Late Devonian glacigenic and associated facies from the central Appalachian Basin, eastern United States
D. K. Brezinski, C. B. Cecil, V.W. Skema
2010, Geological Society of America Bulletin (122) 265-281
Late Devonian strata in the eastern United States are generally considered as having been deposited under warm tropical conditions. However, a stratigraphically restricted Late Devonian succession of diamictite- mudstonesandstone within the Spechty Kopf and Rockwell Formations that extends for more than 400 km along depositional strike within the central Appalachian...
NetCDF-CF-OPeNDAP: Standards for ocean data interoperability and object lessons for community data standards processes
Steven C. Hankin, Jon D. Blower, Thierry Carval, Kenneth S. Casey, Craig Donlon, Olivier Lauret, Thomas Loubrieu, Ashwanth Srinivasan, Joaquin Trinanes, Oystein Godoy, Roy Mendelssohn, Richard P. Signell, Jeff de La Beaujardiere, Peter Cornillon, Frederique Blanc, Russ Rew, Jack Harlan
Julie Hall, D.E. Harrison, Detlef Stammer, editor(s)
2010, Conference Paper, Proceedings of OceanObs'09: Sustained Ocean Observations and Information for Society
It is generally recognized that meeting society's emerging environmental science and management needs will require the marine data community to provide simpler, more effective and more interoperable access to its data. There is broad agreement, as well, that data standards are the bedrock upon which interoperability will be built. The...
Recorded motions of the 6 April 2009 Mw 6.3 L'Aquila, Italy, earthquake and implications for building structural damage: Overview
M. Çelebi, P. Bazzurro, L. Chiaraluce, P. Clemente, L. Decanini, A. Desortis, W. Ellsworth, A. Gorini, E. Kalkan, S. Marcucci, G. Milana, F. Mollaioli, M. Olivieri, R. Paolucci, D. Rinaldis, A. Rovelli, F. Sabetta, C. Stephens
2010, Earthquake Spectra (26) 651-684
The normal-faulting earthquake of 6 April 2009 in the Abruzzo Region of central Italy caused heavy losses of life and substantial damage to centuriesold buildings of significant cultural importance and to modern reinforcedconcrete- framed buildings with hollow masonry infill walls. Although structural deficiencies were significant and widespread, the study of...
Tuning stochastic matrix models with hydrologic data to predict the population dynamics of a riverine fish
P.C. Sakaris, E.R. Irwin
2010, Ecological Applications (20) 483-496
We developed stochastic matrix models to evaluate the effects of hydrologic alteration and variable mortality on the population dynamics of a lotie fish in a regulated river system. Models were applied to a representative lotic fish species, the flathead catfish (Pylodictis olivaris), for which two populations were examined: a native...
Using chloride and other ions to trace sewage and road salt in the Illinois Waterway
W.R. Kelly, S.V. Panno, Keith C. Hackley, H.-H. Hwang, A.T. Martinsek, M. Markus
2010, Applied Geochemistry (25) 661-673
Chloride concentrations in waterways of northern USA are increasing at alarming rates and road salt is commonly assumed to be the cause. However, there are additional sources of Cl- in metropolitan areas, such as treated wastewater (TWW) and water conditioning salts, which may be contributing to Cl- loads entering surface...
Current lineages of the epithelioma papulosum cyprini (EPC) cell line are contaminated with fathead minnow, Pimephales promelas, cells
J. Winton, W. Batts, P. DeKinkelin, M. LeBerre, M. Bremont, N. Fijan
2010, Journal of Fish Diseases (33) 701-704
Initially established from proliferative skin lesions of the common carp, Cyprinus carpio L., the epithelioma papulosum cyprini (EPC) cell line (Fijan, Sulimanovic, Bearzotti, Muzinic, Zwillenberg, Chilmonczyk, Vautherot & de Kinkelin 1983) has become one of the most widely used tools for research on fish viruses and the diagnosis of fish...
Are there optimal densities for prairie birds?
S. K. Skagen, A.A.Y. Adams
2010, Condor (112) 8-14
The major forces of food and predation shape fitness-enhancing decisions of birds at all stages of their life cycles. During the breeding season, birds can minimize nest loss due to predation by selecting sites with a lower probability of predation. To understand the environmental and social aspects and consequences of...
Phylogeography of wolves (Canis lupus) in the Pacific Northwest
Byron V. Weckworth, Sandra L. Talbot, Joseph A. Cook
2010, Journal of Mammalogy (91) 363-375
Glacial cycles in the late Pleistocene played a dominant role in sculpting the evolutionary histories of many high-latitude organisms. The refugial hypothesis argues that populations retracted during glacial maxima and were isolated in separate refugia. One prediction of this hypothesis is that populations inhabiting different refugia diverged and then, during...
Probable causes of increasing brucellosis in free-ranging elk of the Greater Yellowstone Ecosystem
Paul C. Cross, E.K. Cole, A. P. Dobson, W.H. Edwards, K.L. Hamlin, G. Luikart, A.D. Middleton, B.M. Scurlock, P.J. White
2010, Ecological Applications (20) 278-288
While many wildlife species are threatened, some populations have recovered from previous overexploitation, and data linking these population increases with disease dynamics are limited. We present data suggesting that free-ranging elk (Cervus elaphus) are a maintenance host for Brucella abortus in new areas of the Greater Yellowstone Ecosystem (GYE). Brucellosis...
Three-dimensional long-period groundmotion simulations in the upper Mississippi embayment
K.A. Macpherson, E.W. Woolery, Z. Wang, P. Liu
2010, Seismological Research Letters (81) 391-405
We employed a 3D velocity model and 3D wave propagation code to simulate long-period ground motions in the upper Mississippi embayment. This region is at risk from large earthquakes in the New Madrid seismic zone (NMSZ) and observational data are sparse, making simulation a valuable tool for predicting the effects...
Cassini spectra and photometry 0.25–5.1 μm of the small inner satellites of Saturn
B. J. Buratti, J.M. Bauer, M.D. Hicks, J. A. Mosher, G. Filacchione, T. Momary, K. H. Baines, R. H. Brown, R. N. Clark, P. D. Nicholson
2010, Icarus (206) 524-536
The nominal tour of the Cassini mission enabled the first spectra and solar phase curves of the small inner satellites of Saturn. We present spectra from the Visual Infrared Mapping Spectrometer (VIMS) and the Imaging Science Subsystem (ISS) that span the 0.25-5.1 ??m spectral range. The composition of Atlas, Pandora,...
Repeated use of an abandoned vehicle by nesting Turkey vultures (Cathartes aura)
L.D. Igl, S.L. Peterson
2010, Journal of Raptor Research (44) 73-75
Turkey Vultures (Cathartes aura) lay their eggs on an existing substrate in the dark recesses of a variety of natural sites (Kirk and Mossman 1998). Although an important requirement of Turkey Vulture nest-site selection is isolation from human disturbances (<a class="ref"...
Hydrated mineral stratigraphy of Ius Chasma, Valles Marineris
L.H. Roach, J.F. Mustard, G. Swayze, R.E. Milliken, J.L. Bishop, S.L. Murchie, K. Lichtenberg
2010, Icarus (206) 253-268
New high-resolution spectral and morphologic imaging of deposits on walls and floor of Ius Chasma extend previous geomorphic mapping, and permit a new interpretation of aqueous processes that occurred during the development of Valles Marineris. We identify hydrated mineralogy based on visible-near infrared (VNIR) absorptions. We map the extents of...
The role of African dust in the formation of Quaternary soils on Mallorca, Spain and implications for the genesis of Red Mediterranean soils
D.R. Muhs, J. Budahn, A. Avila, G. Skipp, J. Freeman, D. Patterson
2010, Quaternary Science Reviews (29) 2518-2543
African dust additions explain the origin of terra rossa soils that are common on the carbonate-platform island of Mallorca, Spain. Mineralogical and geochemical analyses indicate that Quaternary carbonate eolianites on Mallorca have a very high purity, usually composed of more than 90% carbonate minerals (calcite, dolomite, and aragonite). In contrast,...
Hydrothermal heat discharge in the Cascade Range, northwestern United States
S. E. Ingebritsen, Robert H. Mariner
2010, Journal of Volcanology and Geothermal Research (196) 208-218
Hydrothermal heat discharge in the Cascade Range includes the heat discharged by thermal springs, by "slightly thermal" springs that are only a few degrees warmer than ambient temperature, and by fumaroles. Thermal-spring heat discharge is calculated on the basis of chloride-flux measurements and geothermometer temperatures and totals ~ 240 MW...
Report of the COSPAR mars special regions colloquium
G. Kminek, J.D. Rummel, C.S. Cockell, R. Atlas, N. Barlow, D. Beaty, W. Boynton, M. Carr, S. Clifford, C.A. Conley, A.F. Davila, A. Debus, P. Doran, M. Hecht, J. Heldmann, J. Helbert, V. Hipkin, G. Horneck, Thomas L. Kieft, G. Klingelhoefer, M. Meyer, H. Newsom, G.G. Ori, J. Parnell, D. Prieur, F. Raulin, D. Schulze-Makuch, J.A. Spry, P.E. Stabekis, E. Stackebrandt, J. Vago, M. Viso, M. Voytek, L. Wells, F. Westall
2010, Advances in Space Research (46) 811-829
In this paper we present the findings of a COSPAR Mars Special Regions Colloquium held in Rome in 2007. We review and discuss the definition of Mars Special Regions, the physical parameters used to define Mars Special Regions, and physical features on Mars that can be interpreted as Mars Special...
Characterization of pyroclastic deposits and pre-eruptive soils following the 2008 eruption of Kasatochi Island Volcano, Alaska
B. Wang, G. Michaelson, C.-L. Ping, G. Plumlee, P. Hageman
2010, Arctic, Antarctic, and Alpine Research (42) 276-284
The 78 August 2008 eruption of Kasatochi Island volcano blanketed the island in newly generated pyroclastic deposits and deposited ash into the ocean and onto nearby islands. Concentrations of water soluble Fe, Cu, and Zn determined from a 1:20 deionized water leachate of the ash were sufficient to provide short-term...
Tropical shoreline ice in the late Cambrian: Implications for earth's climate between the Cambrian Explosion and the Great Ordovician Biodiversification Event
Anthony C. Runkel, T.J. MacKey, Clinton A. Cowan, David L. Fox
2010, GSA Today (20) 4-10
Middle to late Cambrian time (ca. 513 to 488 Ma) is characterized by an unstable plateau in biodiversity, when depauperate shelf faunas suffered repeated extinctions. This poorly understood interval separates the Cambrian Explosion from the Great Ordovician Biodiversification Event and is generally regarded as a time of sustained greenhouse conditions....
Normal-faulting slip maxima and stress-drop variability: A geological perspective
Suzanne Hecker, T. E. Dawson, David P. Schwartz
2010, Bulletin of the Seismological Society of America (100) 3130-3147
We present an empirical estimate of maximum slip in continental normal-faulting earthquakes and present evidence that stress drop in intraplate extensional environments is dependent on fault maturity. A survey of reported slip in historical earthquakes globally and in latest Quaternary paleoearthquakes in the Western Cordillera of the United States indicates...
Variations in coal characteristics and their possible implications for CO2 sequestration: Tanquary injection site, southeastern Illinois, USA
D.G. Morse, Maria Mastalerz, A. Drobniak, J.A. Rupp, S. Harpalani
2010, International Journal of Coal Geology (84) 25-38
As part of the U.S. Department of Energy's Regional Sequestration Partnership program, the potential for sequestering CO2 in the largest bituminous coal reserve in United States - the Illinois Basin - is being assessed at the Tanquary site in Wabash County, southeastern Illinois. To accomplish the main project objectives, which...
Migration of waterfowl in the east asian flyway and spatial relationship to HPAI H5N1 outbreaks
John Y. Takekawa, S. H. Newman, X. Xiao, D.J. Prosser, K.A. Spragens, E.C. Palm, B. Yan, T. Li, F. Lei, D. Zhao, David C. Douglas, S.B. Muzaffar, W. Ji
2010, Avian Diseases (54) 466-476
Poyang Lake is situated within the East Asian Flyway, a migratory corridor for waterfowl that also encompasses Guangdong Province, China, the epicenter of highly pathogenic avian influenza (HPAI) H5N1. The lake is the largest freshwater body in China and a significant congregation site for waterfowl; however, surrounding rice fields and...