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Page 1978, results 49426 - 49450

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Optical dating of the anastasia formation, northeastern florida, USA
K.E. Burdette, J.W. Rink, G.H. Means, R.W. Portell
2009, Southeastern Geology (46) 173-185
The single-aliquot regenerative-dose (SAR) procedure was used to obtain optically stimulated luminescence ages to determine the depositional age of the upper part of the Anastasia Formation. This unit, which crops out along the east coast of Florida, is one of the most culturally and economically important coquina deposits in North...
PCBs and DDE in tree swallow (Tachycineta bicolor) eggs and nestlings from an estuarine PCB superfund site, New Bedford Harbor, MA, U.S.A.
Saro Jayaraman, Diane E. Nacci, Denise M. Champlin, Richard J. Pruell, Kenneth J. Rocha, Christine M. Custer, Thomas W. Custer, Mark Cantwell
2009, Environmental Science & Technology (43) 8387-8392
While breeding tree swallows (Tachycineta bicolor) have been used as biomonitors for freshwater sites, we report the first use of this species to assess contaminant bioaccumulation from estuarine breeding grounds into these aerial insectivores. Eggs and nestlings were collected from nest boxes in a polychlorinated biphenyl (PCB) contaminated estuary, the...
Hydrologic control of nitrogen removal, storage, and export in a mountain stream
R.O. Hall, M. A. Baker, C.D. Arp, B.J. Kocha
2009, Limnology and Oceanography (54) 2128-2142
Nutrient cycling and export in streams and rivers should vary with flow regime, yet most studies of stream nutrient transformation do not include hydrologic variability. We used a stable isotope tracer of nitrogen (15N) to measure nitrate (NO3−) uptake, storage, and export in a mountain stream, Spring Creek, Idaho, U.S.A....
The glacial/deglacial history of sedimentation in Bear Lake, Utah and Idaho
J. G. Rosenbaum, C.W. Heil Jr.
2009, Special Paper of the Geological Society of America 247-261
Bear Lake, in northeastern Utah and southern Idaho, lies in a large valley formed by an active half-graben. Bear River, the largest river in the Great Basin, enters Bear Lake Valley ???15 km north of the lake. Two 4-m-long cores provide a lake sediment record extending back ???26 cal k.y....
Description of Tessaracoccus profundi sp.nov., a deep-subsurface actinobacterium isolated from a Chesapeake impact crater drill core (940 m depth)
K.W. Finster, C.S. Cockell, M.A. Voytek, A.L. Gronstal, K.U. Kjeldsen
2009, Antonie van Leeuwenhoek (96) 515-526
A novel actinobacterium, designated CB31T, was isolated from a 940 m depth sample of a drilling core obtained from the Chesapeake meteor impact crater. The strain was isolated aerobically on R2A medium agar plates supplemented with NaCl (20 g l-1) and MgCl2???6H 2O (3 g l-1). The colonies were circular,...
Nesting ecology of greater sage-grouse Centrocercus urophasianus at the eastern edge of their historic distribution
K. M. Herman-Brunson, K. C. Jensen, N. W. Kaczor, C. C. Swanson, M. A. Rumble, R. W. Klaver
2009, Wildlife Biology (15) 237-246
Greater sage-grouse Centrocercus urophasianus populations in North Dakota declined approximately 67% between 1965 and 2003, and the species is listed as a Priority Level 1 Species of Special Concern by the North Dakota Game and Fish Department. The habitat and ecology of the species at the eastern edge of its historical range...
Large area scene selection interface (LASSI): Methodology of selecting landsat imagery for The Global Land Survey 2005
S. Franks, J. G. Masek, R.M.K. Headley, J. Gasch, T. Arvidson
2009, Photogrammetric Engineering and Remote Sensing (75) 1287-1296
The Global Land Survey (GLS) 2005 is a cloud-free, orthorec-tified collection of Landsat imagery acquired during the 2004 to 2007 epoch intended to support global land-cover and ecological monitoring. Due to the numerous complexities in selecting imagery for the GLS2005, NASA and the U.S. Geological Survey (USGS) sponsored the development...
Home range, habitat selection, and movements of California Black Rails at tidal marshes at San Francisco Bay, California
Danika C. Tsao, John Y. Takekawa, Isa Woo, Julie L. Yee, Jules G. Evens
2009, The Condor (111) 599-610
Little is known about the movements and habitat selection of California Black Rails (Laterallus jamaicensis coturniculus) in coastal California. We captured 130 Black Rails, of which we radio-marked 48, in tidal marshes in San Francisco Bay during 2005 and 2006. Our objective was to examine their home ranges, movements, and...
The Meteoritical Bulletin, No. 96, September 2009
M.K. Weisberg, C. Smith, G. Benedix, C.D.K. Herd, K. Righter, H. Haack, A. Yamaguchi, Aoudjehane H. Chennaoui, J. N. Grossman
2009, Meteoritics and Planetary Science (44) 1355-1397
The Meteoritical Bulletin No. 96 contains a total of 1590 newly approved meteorite names with their relevant data. These include 12 from specific locations within Africa, 76 from northwest Africa, 9 from the Americas, 13 from Asia, 1 from Australia, 2 from Europe, 950 from Antarctica recovered by the Chinese...
Diet and body mass of wintering ducks in adjacent brackish and freshwater habitats
M. R. Miller, E.G. Burns, B.E. Wickland, J.M. Eadie
2009, Waterbirds (32) 374-387
Field-collected and hunter-donated ducks obtained during September-January of 1997-98 and 1998-99 were used to determine if food habits and body mass of Northern Pintails (Anas acuta) and Mallards (A. platyrhynchos) wintering in Suisun Marsh (Suisun), California, a managed estuarine brackish marsh, differed from values in the adjacent Sacramento-San Joaquin River...
A prototype feature system for feature retrieval using relationships
J. Choi, E.L. Usery
2009, Cartography and Geographic Information Science (36) 331-345
Using a feature data model, geographic phenomena can be represented effectively by integrating space, theme, and time. This paper extends and implements a feature data model that supports query and visualization of geographic features using their non-spatial and temporal relationships. A prototype feature-oriented geographic information system (FOGIS) is then developed...
Loss of butt-end leg bands on male wild turkeys
Duane R. Diefenbach, Mary Jo Casalena, Michael V. Schiavone, David A. Swanson, Michael Reynolds, Robert C. Boyd, Robert Eriksen, Bryan L. Swift
2009, Journal of Wildlife Management (73) 996-999
We estimated loss of butt-end leg bands on male wild turkeys (Meleagris gallapavo) captured in New York, Ohio, and Pennsylvania (USA) during December–March, 2006–2008. We used aluminum rivet leg bands as permanent marks to estimate loss of regular aluminum, enameled aluminum, anodized aluminum, and stainless steel butt-end leg bands placed...
A habitat assessment for Florida panther population expansion into central Florida
C.A. Thatcher, F.T. Van Manen, J. D. Clark
2009, Journal of Mammalogy (90) 918-925
One of the goals of the Florida panther (Puma concolor coryi) recovery plan is to expand panther range north of the Caloosahatchee River in central Florida. Our objective was to evaluate the potential of that region to support panthers. We used a geographic information system and the Mahalanobis distance statistic...
Hierarchical Bayesian analysis to incorporate age uncertainty in growth curve analysis and estimates of age from length: Florida manatee (Trichechus manatus) carcasses
L.K. Schwarz, M.C. Runge
2009, Canadian Journal of Fisheries and Aquatic Sciences (66) 1775-1789
Age estimation of individuals is often an integral part of species management research, and a number of ageestimation techniques are commonly employed. Often, the error in these techniques is not quantified or accounted for in other analyses, particularly in growth curve models used to describe physiological responses to environment and...
Rayleigh-wave mode separation by high-resolution linear radon transform
Y. Luo, J. Xia, R. D. Miller, Y. Xu, J. Liu, Q. Liu
2009, Geophysical Journal International (179) 254-264
Multichannel analysis of surface waves (MASW) method is an effective tool for obtaining vertical shear wave profiles from a single non-invasive measurement. One key step of the MASW method is generation of a dispersion image and extraction of a reliable dispersion curve from raw multichannel shot records. Because different Rayleigh-wave...
Trace-element record in zircons during exhumation from UHP conditions, North-East Greenland Caledonides
W.C. McClelland, J. A. Gilotti, F.K. Mazdab, J. L. Wooden
2009, European Journal of Mineralogy (21) 1135-1148
Coesite-bearing zircon formed at ultrahigh-pressure (UHP) conditions share general characteristics of eclogite-facies zircon with trace-element signatures characterized by depleted heavy rare earth elements (HREE), lack of an Eu anomaly, and low Th/ U ratios. Trace-element signatures of zircons from the Caledonian UHP terrane in North-East Greenland were used to examine...
Declines in moose population density at Isle Royle National Park, MI, USA and accompanied changes in landscape patterns
N. R. De Jager, J. Pastor
2009, Landscape Ecology (24) 1389-1403
Ungulate herbivores create patterns of forage availability, plant species composition, and soil fertility as they range across large landscapes and consume large quantities of plant material. Over time, herbivore populations fluctuate, producing great potential for spatio-temporal landscape dynamics. In this study, we extend the spatial and temporal extent of a...
Relationships between insolation and rattlesnake hibernacula
B.T. Hamilton, E.M. Nowak
2009, Western North American Naturalist (69) 319-328
We examined the relationship between insolation, climate, and hibernacula of black-tailed (Crotalus molossus), Great Basin (Crotalus lutosus), and western diamondback (Crotalus atrox) rattlesnakes at 4 sites in Arizona, Nevada, and Utah, Hibernacula were located through a combination of visual searches and radio telemetry from 1995 to 2003. We used global...
Factors influencing reporting and harvest probabilities in North American geese
G.S. Zimmerman, T.J. Moser, W. L. Kendall, P.F. Doherty Jr., Gary C. White, D.F. Caswell
2009, Journal of Wildlife Management (73) 710-719
We assessed variation in reporting probabilities of standard bands among species, populations, harvest locations, and size classes of North American geese to enable estimation of unbiased harvest probabilities. We included reward (US10,20,30,50, or100) and control (0) banded geese from 16 recognized goose populations of 4 species: Canada (Branta canadensis), cackling...
Can footwall unloading explain late Cenozoic uplift of the Sierra Nevada crest?
G. A. Thompson, T. Parsons
2009, International Geology Review (51) 986-993
Globally, normal-fault displacement bends and warps rift flanks upwards, as adjoining basins drop downwards. Perhaps the most evident manifestations are the flanks of the East African Rift, which cuts across the otherwise minimally deformed continent. Flank uplift was explained by Vening Meinesz (1950, Institut Royal Colonial Belge, Bulletin des Seances,...
The effects of varied densities on the growth and emigration of adult cutthroat trout and brook trout in fenced stream enclosures
D.J. Buys, R.H. Hilderbrand, J. L. Kershner
2009, Western North American Naturalist (69) 371-381
We evaluated the effects of various density treatments on adult fish growth and emigration rates between Bonneville cutthroat trout Oncorhynchus clarki utah and brook trout Salvelinus fontinalis in stream enclosures in Beaver Creek, Idaho, We used 3 density treatments (low, ambient, and high fish densities) to evaluate density-related effects and...
Evaluation of airborne lidar data to predict vegetation Presence/Absence
M. Palaseanu-Lovejoy, A. Nayegandhi, J. Brock, R. Woodman, C. W. Wright
2009, Journal of Coastal Research 83-97
This study evaluates the capabilities of the Experimental Advanced Airborne Research Lidar (EAARL) in delineating vegetation assemblages in Jean Lafitte National Park, Louisiana. Five-meter-resolution grids of bare earth, canopy height, canopy-reflection ratio, and height of median energy were derived from EAARL data acquired in September 2006. Ground-truth data were collected...
A sampling design framework for monitoring secretive marshbirds
Douglas H. Johnson, J.P. Gibbs, M. Herzog, S. Lor, N.D. Niemuth, C. A. Ribic, M. Seamans, T.L. Shaffer, W.G. Shriver, S.V. Stehman, W.L. Thompson
2009, Waterbirds (32) 203-215
A framework for a sampling plan for monitoring marshbird populations in the contiguous 48 states is proposed here. The sampling universe is the breeding habitat (i.e. wetlands) potentially used by marshbirds. Selection protocols would be implemented within each of large geographical strata, such as Bird Conservation Regions. Site selection will...
Widespread occurrence of the chytrid fungus batrachochytrium dendrobatidis on oregon spotted frogs (rana pretiosa)
C.A. Pearl, J. Bowerman, M.J. Adams, N.D. Chelgren
2009, EcoHealth (6) 209-218
The pathogen Batrachochytrium dendrobatidis (Bd) has been associated with amphibian declines in multiple continents, including western North America. We investigated Bd prevalence in Oregon spotted frog (Rana pretiosa), a species that has declined across its range in the Pacific Northwest. Polymerase chain reaction analysis of skin swabs indicated that Bd...
Phosphorus and nitrogen legacy in a restoration wetland, upper Klamath lake, Oregon
J.H. Duff, K.D. Carpenter, D.T. Snyder, Karl K. Lee, R.J. Avanzino, F.J. Triska
2009, Wetlands (29) 735-746
The effects of sediment, ground-water, and surface-water processes on the timing, quantity, and mechanisms of N and P fluxes were investigated in the Wood River Wetland 57 years after agricultural practices ceased and seasonal and permanent wetland hydrologies were restored. Nutrient concentrations in standing water largely reflected ground water in...