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Page 1814, results 45326 - 45350

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Arsenic in sediments, groundwater, and streamwater of a glauconitic Coastal Plain terrain, New Jersey, USA-Chemical " fingerprints" for geogenic and anthropogenic sources
Julia Barringer, Pamela A. Reilly, D. D. Eberl, A.E. Blum, J.L. Bonin, Robert Rosman, B. Hirst, M. Alebus, K. Cenno, M. Gorska
2011, Applied Geochemistry (26) 763-776
Glauconite-bearing deposits are found worldwide, but As levels have been determined for relatively few. The As content of glauconites in sediments of the Inner Coastal Plain of New Jersey can exceed 100 mg/kg, and total As concentrations (up to 5.95 μg/L) found historically and recently in streamwaters exceed the State standard. In...
Cruise ships as a source of avian mortality during fall migration
Carol I. Bocetti
2011, Wilson Journal of Ornithology (123) 176-178
AAvian mortality during fall migration has been studied at many anthropogenic structures, most of which share the common feature of bright lighting. An additional, unstudied source of avian mortality during fall migration is recreational cruise ships that are brightly lit throughout the night. I documented a single mortality event of...
Turtles and culverts, and alternative energy development: an unreported but potentially significant mortality threat to the desert tortoise (Gopherus agassizii)
J.E. Lovich, J.R. Ennen, S. Madrak, B. Grover
2011, Chelonian Conservation and Biology (10) 124-129
Culverts are often used to increase the permeability of roaded landscapes for wildlife, including turtles. Although the benefits of culverts as safe passages for turtles are well documented, under some conditions culverts can entrap them and cause mortality. Here we report a culvert-related mortality in the federally threatened desert tortoise...
Geological effects and implications of the 2010 tsunami along the central coast of Chile
R.A. Morton, G. Gelfenbaum, M.L. Buckley, B. M. Richmond
2011, Sedimentary Geology (242) 34-51
Geological effects of the 2010 Chilean tsunami were quantified at five near-field sites along a 200 km segment of coast located between the two zones of predominant fault slip. Field measurements, including topography, flow depths, flow directions, scour depths, and deposit thicknesses, provide insights into the processes and morphological changes associated...
Seasonal fecundity and source-sink status of shrub-nesting birds in a southwestern riparian corridor
L. Arriana Brand, B.R. Noon
2011, Wilson Journal of Ornithology (123) 48-58
Saltcedar (Tamarix spp.) has increasingly dominated riparian floodplains relative to native forests in the southwestern U.S., but little is known about its impacts on avian productivity or population status. We monitored 86 Arizona Bell's Vireo (Vireo bellii arizonae), 147 Abert's Towhee (Melozone aberti), and 154 Yellow-breasted Chat (<span...
Documenting channel features associated with gas hydrates in the Krishna-Godavari Basin, offshore India
M. Riedel, Timothy S. Collett, Ude Shankar
2011, Marine Geology (279) 1-11
During the India National Gas Hydrate Program (NGHP) Expedition 01 in 2006 significant sand and gas hydrate were recovered at Site NGHP-01-15 within the Krishna–Godavari Basin, East Coast off India. At the drill site NGHP-01-15, a 5–8 m thick interval was found that is characterized by higher sand content than anywhere...
Multi-scale clustering of functional data with application to hydraulic gradients in wetlands
Mark C. Greenwood, Richard S. Sojda, Julia L. Sharp, Rory G. Peck, Donald O. Rosenberry
2011, Journal of Data Science (9) 399-426
A new set of methods are developed to perform cluster analysis of functions, motivated by a data set consisting of hydraulic gradients at several locations distributed across a wetland complex. The methods build on previous work on clustering of functions, such as Tarpey and Kinateder (2003) and Hitchcock et al....
Genetic analysis of scats reveals minimum number and sex of recently documented mountain lions
Ashwin Naidu, Lindsay A. Smythe, Ron W. Thompson, Melanie Culver
2011, Journal of Fish and Wildlife Management (2) 106-111
Recent records of mountain lions Puma concolor and concurrent declines in desert bighorn sheep Ovis canadensis mexicana on Kofa National Wildlife Refuge in Arizona, United States, have prompted investigations to estimate the number of mountain lions occurring there. We performed noninvasive genetic analyses and identified species, individuals, and sex from...
Character of shell beds flanking Herod Point Shoal, southeastern Long Island Sound, New York
Lawrence J. Poppe, S. Jeffress Williams, Ivar G. Babb
2011, Journal of Coastal Research (27) 493-501
High biogenic productivity, strong tidal currents, shoal topography, and short transport distances combine to favor shell-bed formation along the lower flanks of a cape-associated shoal off Herod Point on Long Island, New York. This shell bed has a densely packed, clast-supported fabric composed largely of undegraded surf clam (Spisula solidissima)...
Islands at bay: Rising seas, eroding islands, and waterbird habitat loss in Chesapeake Bay (USA)
R. Michael Erwin, D.F. Brinker, B.D. Watts, G.R. Costanzo, D.D. Morton
2011, Journal of Coastal Conservation (15) 51-60
Like many resources in the Chesapeake Bay region of the U.S., many waterbird nesting populations have suffered over the past three to four decades. In this study, historic information for the entire Bay and recent results from the Tangier Sound region were evaluated to illustrate patterns of island erosion and...
Watershed-scale response to climate change through the twenty-first century for selected basins across the United States
Lauren E. Hay, Steven L. Markstrom, Christian D. Ward-Garrison
2011, Earth Interactions (15) 1-37
The hydrologic response of different climate-change emission scenarios for the twenty-first century were evaluated in 14 basins from different hydroclimatic regions across the United States using the Precipitation-Runoff Modeling System (PRMS), a process-based, distributed-parameter watershed model. This study involves four major steps: 1) setup and calibration of the PRMS model...
Apogean-perigean signals encoded in tidal flats at the fluvio-estuarine transition of Glacier Creek, Turnagain Arm, Alaska; implications for ancient tidal rhythmites
S.F. Greb, A.W. Archer, D.G. Deboer
2011, Sedimentology (58) 1434-1452
Turnagain Arm is a macrotidal fjord‐style estuary. Glacier Creek is a small, glacially fed stream which enters the estuary tangentially near Girdwood, Alaska. Trenches and daily sedimentation measurements were made in a mudflat along the fluvio–estuarine transition of Glacier Creek during several summers since 2003. Each year, the flats appear...
Rising sea level may cause decline of fringing coral reefs
Michael E. Field, Andrea S. Ogston, Curt D. Storlazzi
2011, Eos, Transactions, American Geophysical Union (92) 273-274
Coral reefs are major marine ecosystems and critical resources for marine diversity and fisheries. These ecosystems are widely recognized to be at risk from a number of stressors, and added to those in the past several decades is climate change due to anthropogenically driven increases in atmospheric concentrations of greenhouse...
Estimation of suspended-sediment concentration from total suspended solids and turbidity data for Kentucky, 1978-1995
Tanja N. Williamson, Charles G. Crawford
2011, Journal of the American Water Resources Association (47) 739-749
Suspended sediment is a constituent of water quality that is monitored because of concerns about accelerated erosion, nonpoint contamination of water resources, and degradation of aquatic environments. In order to quantify the relationship among different sediment parameters for Kentucky streams, long‐term records were obtained from the National Water Information System...
On the terminology of the spectral vegetation index (NIR – SWIR)/(NIR + SWIR)
Lel Ji, Li Zhang, Bruce K. Wylie, Jennifer R. Rover
2011, International Journal of Remote Sensing (32) 6901-6909
The spectral vegetation index (ρNIR – ρSWIR)/(ρNIR + ρSWIR), where ρNIR and ρSWIR are the near-infrared (NIR) and shortwave-infrared (SWIR) reflectances, respectively, has been widely used to indicate vegetation moisture condition. This index has multiple names in the literature, including infrared index (II), normalized difference infrared index (NDII), normalized difference...
Notes on the geology and meteorology of sites infected with white-nose syndrome before July 2010 in Southeastern United States
Christopher S. Swezey, Christopher P. Garrity
2011, NSS News (2011) 16-25
Since 2006, numerous bat colonies in North America have experienced unusually high incidences of mortality. In these colonies, bats are infected by a white fungus named Geomyces destructans, which has been observed on bat muzzles, noses, ears, and (or) wings. Although it is not exactly certain how and why these...
Influence of dissolved organic matter on the environmental fate of metals, nanoparticles, and colloids
George R. Aiken, Heileen Hsu-Kim, Joseph N. Ryan
2011, Environmental Science & Technology (45) 3196-3201
We have known for decades that dissolved organic matter (DOM) plays a critical role in the biogeochemical cycling of trace metals and the mobility of colloidal particles in aquatic environments. In recent years, concerns about the ecological and human health effects of metal-based engineered nanoparticles released into natural waters have...
And last comes XYZ
Bill Langer
2011, Aggregates Manager (16) 52-52
Catesian Coordinates can be used to specify the position of any point in three-dimensional space by measuring its distances from three mutually perpendicular planes....
Informal and formal trail monitoring protocols and baseline conditions: Acadia National Park
Jeffrey L. Marion, Jeremy F. Wimpey, L. Park
2011, Report
At Acadia National Park, changing visitor use levels and patterns have contributed to an increasing degree of visitor use impacts to natural and cultural resources. To better understand the extent and severity of these resource impacts and identify effective management techniques, the park sponsored this research to develop monitoring protocols,...
Where the wild things are: Predicting hotspots of seabird aggregations in the California Current System
N. Nur, J. Jahncke, M.P. Herzog, J. Howar, K.D. Hyrenbach, J.E. Zamon, D. G. Ainley, J. A. Wiens, K. Morgan, L.T. Balance, D. Stralberg
2011, Ecological Applications (21) 2241-2257
Marine Protected Areas (MPAs) provide an important tool for conservation of marine ecosystems. To be most effective, these areas should be strategically located in a manner that supports ecosystem function. To inform marine spatial planning and support strategic establishment of MPAs within the California Current System, we identified areas predicted...
Chapter 5: Greater sage-grouse: General use and roost site occurrence with pellet counts as a measure of relative abundance
Steve E. Hanser, Cameron L. Aldridge, Matthias Leu, Mary M. Rowland, Scott E. Nielsen, Steven T. Knick
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
Greater sage-grouse (Centrocercus urophasianus) have been declining both spatially and numerically throughout their range because of anthropogenic disturbance and loss and fragmentation of sagebrush (Artemisia spp.) habitats. Understanding how sage-grouse respond to these habitat alterations and disturbances, particularly the types of disturbances and extent at which they respond, is critical...
Chapter 7: Occurrence and abundance of ants, reptiles, and mammals
Steve E. Hanser, Matthias Leu, Cameron L. Aldridge, Scott E. Nielsen, Mary M. Rowland, Steven T. Knick
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
Sagebrush (Artemisia spp.)- associated wildlife are threatened by habitat loss and fragmentation and by impacts associated with anthropogenic disturbances, including energy development. Understanding how species of concern as well as other wildlife including insects, reptiles, and mammals respond to type and spatial scale of disturbance is critical to managing future...
Chapter 8: Occurrence of large and medium-sized mammals: Occurrence but not count models predict pronghorn distribution
Matthias Leu, Steve E. Hanser, Cameron L. Aldridge, Scott E. Nielsen, Lowell H. Suring, Steven T. Knick
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
Management of medium to large-sized terrestrial mammals (Antilocapridae, Canidae, Cervidae, Leporidae, Mustelidae, Ochotonidae) in the western United States is multifaceted and complex. Species in this group generally are charismatic and provide economic opportunities, although others are considered a nuisance at one extreme or are listed as species of conservation concern...