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Page 1928, results 48176 - 48200

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Appraising U.S. Geological Survey science records
John Faundeen
2010, Archival Issues (32) 7-22
The U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center has legislative charters to preserve and make accessible land remote sensing records important to the United States. This essay explains the appraisal process developed by EROS to ensure the science records it holds and those offered to it...
Survival of shovelnose sturgeon after abdominally invasive endoscopic evaluation
D.G. Trested, Reuben R. Goforth, J.P. Kirk, J. Jeffery Isely
2010, North American Journal of Fisheries Management (30) 121-125
The development of effective and minimally invasive techniques to determine gender and gonad developmental stage is particularly important in performing accurate fisheries assessments for use in conservation and restoration. The initial and latent survival of shovelnose sturgeon Scaphirhynchus platorynchus was assessed after exposure to a modified endoscopic technique designed to collect that...
Disease limits populations: plague and black-tailed prairie dogs
Jack F. Cully Jr., T. Johnson, S.K. Collinge, C. Ray
2010, Vector-Borne and Zoonotic Diseases (10) 7-15
Plague is an exotic vector-borne disease caused by the bacterium Yersinia pestis that causes mortality rates approaching 100% in black-tailed prairie dogs (Cynomys ludovicianus). We mapped the perimeter of the active portions of black-tailed prairie dog colonies annually between 1999 and 2005 at four prairie dog colony complexes in areas...
Waterbird nest density and nest survival in rice fields of southwestern Louisiana
S. Pierluissi, Sammy L. King, Michael D. Kaller
2010, Waterbirds (33) 323-330
Rice fields in southwestern Louisiana provide breeding habitat for several waterbird species; however, little is known about nest density, nest survival and the importance of landscape context of rice fields in determining breeding activity. In 2004, 42 rice fields were searched for nests, and 40 were searched in 2005. Land...
The impact of hydrate saturation on the mechanical, electrical, and thermal properties of hydrate-bearing sand, silts, and clay
J. Carlos Santamarina, Carolyn D. Ruppel
Michael Riedel, Eleanor C. Willoughby, Satinder Chopra, editor(s)
2010, Book chapter, Geophysical characterization of gas hydrates
Proper understanding of the physical properties of hydrate-bearing sediments is required for interpretation of borehole logs and exploration geophysical data, the analysis of borehole and submarine slope stability, and the formulation of reservoir simulation and production models. Yet current knowledge of geophysical and geotechnical properties of hydrate-bearing sediments is still...
The Mars Astrobiology Explorer-Cacher (MAX-C): A potential rover mission for 2018
Lisa M. Pratt, Carl Allen, Abby Allwood, Ariel D. Anbar, Sushil Atreya, Mike Carr, Dave Des Marais, Daniel Glavin, John Grant, Vicky Hamilton, Kenneth E. Herkenhoff, Victoria J. Hipkin, Tom McCollom, Alfred McEwen, Scott McLennan, Ralph Milliken, Doug Ming, Gian Gabrielle Ori, John Parnell, Francois Poulet, Barbara Sherwood Lollar, Frances Westall
2010, Astrobiology (10) 127-163
Executive SummaryIntroductionScientific Priorities for a Possible Late-Decade Rover MissionDevelopment of a Spectrum of Possible Mission ConceptsEvaluation, Prioritization of Candidate Mission ConceptsStrategy to Achieve Primary In Situ ObjectivesRelationship to a Potential Sample Return CampaignConsensus Mission VisionConsiderations Related to Landing Site SelectionSome Engineering...
An Adaptive Management Approach for Summer Water Level Reductions on the Upper Mississippi River System
Barry L. Johnson, J.W. Barko, R. Clevenstine, M. Davis, D.L. Galat, S.J. Lubinski, J.M. Nestler
2010, Report
The primary purpose of this report is to provide an adaptive management approach for learning more about summer water level reductions (drawdowns) as a management tool, including where and how drawdowns can be applied most effectively within the Upper Mississippi River System. The report reviews previous drawdowns conducted within the...
Historic and paleo-submarine landslide deposits imaged beneath Port Valdez, Alaska: Implications for tsunami generation in a glacial fiord
H. F. Ryan, H. J. Lee, Peter J. Haeussler, C. R. Alexander, Robert E. Kayen
David C. Mosher, R. C. Shipp, Lorena Moscardelli, Jason Chaytor, Christopher D. P. Baxter, Homa J. Lee, Roger Urgeles, editor(s)
2010, Book chapter, Submarine mass movements and their consequences
During the 1964 M9.2 great Alaskan earthquake, submarine-slope failures resulted in the generation of highly destructive tsunamis at Port Valdez, Alaska. A high-resolution, mini-sparker reflection profiler was used to image debris lobes, which we attribute to slope failures that occurred both during and prior to the 1964 megathrust event. In...
Increase in black mangrove abundance in coastal Louisiana
Thomas Claud Michot, Richard H. Day, Christopher J. Wells
2010, Louisiana Natural Resources News 4-5
Black mangrove (Avicennia germinans), a subtropical species, has historically occurred in saline marsh habitat along the Louisiana coast, but their distribution has always been sparse and they seldom achieved heights of greater than 1 m. The distribution of black mangrove in Louisiana has been largely limited by freezing temperatures. Weather...
Cover preference of the Carolina madtom (Noturus furiosus), an imperiled, indemic southeastern stream fish
S.R. Midway, D.D. Aday, Thomas J. Kwak, K. Gross
2010, Journal of Freshwater Ecology (25) 151-154
In a laboratory setting, we investigated cover preference of the Carolina madtom (Noturus furiosus), an imperiled, endemic southeastern USA stream fish. Fish were tested individually and given 24 hours to make a selection from four cover options, including rock, leaf pack, mussel shell, and an artificial cover unit. Among 30...
Habitat suitability of the Carolina madtom, an imperiled, endemic stream fish
S.R. Midway, Thomas J. Kwak, D.D. Aday
2010, Transactions of the American Fisheries Society (139) 325-338
The Carolina madtom Noturus furiosus is an imperiled stream ictalurid that is endemic to the Tar and Neuse River basins in North Carolina. The Carolina madtom is listed as a threatened species by the state of North Carolina, and whereas recent distribution surveys have found that the Tar River basin...
Structural changes in vegetation coincident with annual grass invasion negatively impacts sprint velocity of small vertebrates
J. P. Rieder, T. A. S. Newbold, Steven M. Ostoja
2010, Biological Invasions (12) 2429-2439
Sagebrush ecosystems in the intermountain west of the United States are being threatened by conversion to the non-native grass, cheatgrass (Bromus tectorum). The dramatic shift in the physical structure of vegetation coincident with cheatgrass invasion likely has negative impacts on animal communities, yet these structural impacts have not been well-studied....
Attributes for NHDPlus catchments (version 1.1) for the conterminous United States: 30-year average annual maximum temperature, 1971-2000
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-29
This data set represents the 30-year (1971-2000) average annual maximum temperature in Celsius multiplied by 100 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the United States Average Monthly or Annual Minimum Temperature, 1971 - 2000 raster dataset produced by the PRISM Group...
Vegetation classification and distribution mapping report: Canyon de Chelly National Monument
K.A. Thomas, M.L. McTeague, Lindsay Ogden, K. Schulz, Tammy S. Fancher, Robert Waltermire, A. Cully
2010, Report
Executive Summary: The classification and distribution mapping of the vegetation of Canyon de Chelly National Monument (CACH) and surrounding environment was accomplished through a multi-agency effort between 2003 and 2007. The National Park Service’s Southern Colorado Plateau Network facilitated the team that conducted the work, which comprised the U.S. Geological...
Use of electrical imaging and distributed temperature sensing methods to characterize surface water–groundwater exchange regulating uranium transport at the Hanford 300 Area, Washington
Lee D. Slater, Dimitrios Ntarlagiannis, Frederick D. Day-Lewis, Kisa Mwakanyamale, Roelof J. Versteeg, Andy Ward, Christopher Strickland, Carole D. Johnson, John W. Lane Jr.
2010, Water Resources Research (46)
We explored the use of continuous waterborne electrical imaging (CWEI), in conjunction with fiber‐optic distributed temperature sensor (FO‐DTS) monitoring, to improve the conceptual model for uranium transport within the Columbia River corridor at the Hanford 300 Area, Washington. We first inverted resistivity and induced polarization CWEI data sets for distributions...
Estimating structural dip from gravity and magnetic profile data
Jeffrey Phillips
2010, Conference Paper, SEG technical program expanded abstracts 2010
The anomalies of ideal sources, dipping magnetic contacts and dipping density sheets, provide the theoretical basis for estimating structural dip from gravity and magnetic profile data. The dip is always related to the local phase angle of a complex analytic signal evaluated directly over the source. For magnetic sheets, the...
Attributes for NHDPlus catchments (version 1.1) for the conterminous United States: Average Annual Daily Maximum Temperature, 2002
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 490-28
This data set represents the average monthly maximum temperature in Celsius multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time High-Resolution Monthly Average Maximum/Minimum Temperature for the Conterminous United States for 2002 raster dataset produced by the...
Estimation and modeling of electrofishing capture efficiency for fishes in wadeable warmwater streams
A. Price, James T. Peterson
2010, North American Journal of Fisheries Management (30) 481-498
Stream fish managers often use fish sample data to inform management decisions affecting fish populations. Fish sample data, however, can be biased by the same factors affecting fish populations. To minimize the effect of sample biases on decision making, biologists need information on the effectiveness of fish sampling methods. We...
Verification of otolith identity used by fisheries scientists for aging channel catfish
James M. Long, David R. Stewart
2010, Transactions of the American Fisheries Society (139) 1775-1779
Previously published studies of the age estimation of channel catfish Ictalurus punctatus based on otoliths have reported using the sagittae, whereas it is likely they were actually using the lapilli. This confusion may have resulted because in catfishes (ostariophyseans) the lapilli are the largest of the three otoliths, whereas in...
Genetic analysis of individual origins supports isolation of grizzly bears in the Greater Yellowstone Ecosystem
Mark A. Haroldson, Charles Schwartz, Katherine C. Kendall, Kerry A. Gunther, David S. Moody, Kevin L. Frey, David Paetkau
2010, Ursus (21) 1-13
The Greater Yellowstone Ecosystem (GYE) supports the southernmost of the 2 largest remaining grizzly bear (Ursus arctos) populations in the contiguous United States. Since the mid-1980s, this population has increased in numbers and expanded in range. However, concerns for its long-term genetic health remain because of its presumed continued isolation....
National Water-Quality Assessment (NAWQA) Area-Characterization Toolbox
Curtis Price
2010, Report
This is release 1.0 of the National Water-Quality Assessment (NAWQA) Area-Characterization Toolbox. These tools are designed to be accessed using ArcGIS Desktop software (versions 9.3 and 9.3.1). The toolbox is composed of a collection of custom tools that implement geographic information system (GIS) techniques used by the NAWQA Program to...
Evaluating the meaning of “layer” in the Martian north polar layered deposits and the impact on the climate connection
Kathryn E. Fishbaugh, Shane Byrne, Kenneth E. Herkenhoff, Randolph L. Kirk, Corey M. Fortezzo, Patrick S. Russell, Alfred S. McEwen
2010, Icarus (205) 269-282
Using data from the High Resolution Imaging Science Experiment (HiRISE) aboard the Mars Reconnaissance Orbiter, we reassess the methods by which layers within the north polar layered deposits (NPLD) can be delineated and their thicknesses measured. Apparent brightness and morphology alone are insufficient for this task; high resolution topographic data...
Diet shift of lentic dragonfly larvae in response to reduced terrestrial prey subsidies
Johanna M. Kraus
2010, Journal of the North American Benthological Society (29) 602-613
Inputs of terrestrial plant detritus and nutrients play an important role in aquatic food webs, but the importance of terrestrial prey inputs in determining aquatic predator distribution and abundance has been appreciated only recently. I examined the numerical, biomass, and diet responses of a common predator, dragonfly larvae, to experimental...
Regional Variation in mtDNA of the Lesser Prairie-Chicken
Christian A. Hagen, James C. Pitman, Brett K. Sandercock, Don H. Wolfe, Robel J. Robel, Roger D. Applegate, Sara J. Oyler-McCance
2010, The Condor (112) 29-37
Cumulative loss of habitat and long-term decline in the populations of the Lesser Prairie-Chicken (Tympanuchus pallidicinctus) have led to concerns for the species' viability throughout its range in the southern Great Plains. For more efficient conservation past and present distributions of genetic variation need to be understood. We...