Klamath basin called "critical" for pintail that depart Grasslands
M. R. Miller, J. P. Fleskes
2005, Grassland Today (15) 3
No abstract available at this time...
Provenance and diagenesis of the evaporite-bearing Burns formation, Meridiani Planum, Mars
S. M. McLennan, J.F. Bell III, W. M. Calvin, P. R. Christensen, B. C. Clark, P.A. de Souza, J. Farmer, W. H. Farrand, D.A. Fike, Ralf Gellert, A. Ghosh, T.D. Glotch, J.P. Grotzinger, B. Hahn, Kenneth E. Herkenhoff, J.A. Hurowitz, J. R. Johnson, S.S. Johnson, B. Jolliff, G. Klingelhofer, A.H. Knoll, Z. Learner, M. C. Malin, H.Y. McSween Jr., J. Pocock, S. W. Ruff, Laurence A. Soderblom, S. W. Squyres, N.J. Tosca, W.A. Watters, M.B. Wyatt, A. Yen
2005, Earth and Planetary Science Letters (240) 95-121
Impure reworked evaporitic sandstones, preserved on Meridiani Planum, Mars, are mixtures of roughly equal amounts of altered siliciclastic debris, of basaltic provenance (40 ± 10% by mass), and chemical constituents, dominated by evaporitic minerals (jarosite, Mg-, Ca-sulfates ± chlorides ± Fe-, Na-sulfates), hematite and possibly secondary silica (60 ± 10%). These chemical constituents and their relative abundances are...
Aeolian processes at the Mars Exploration Rover Meridiani Planum landing site
R. Sullivan, D. Banfield, J.F. Bell III, W. Calvin, D. Fike, M. Golombek, R. Greeley, J. Grotzinger, Kenneth E. Herkenhoff, D. Jerolmack, M. Malin, D. Ming, Laurence A. Soderblom, S. W. Squyres, S. Thompson, W.A. Watters, C.M. Weitz, A. Yen
2005, Nature (436) 58-61
The martian surface is a natural laboratory for testing our understanding of the physics of aeolian (wind-related) processes in an environment different from that of Earth. Martian surface markings and atmospheric opacity are time-variable, indicating that fine particles at the surface are mobilized regularly by wind. Regolith (unconsolidated surface material)...
Planetary science: A 5-micron-bright spot on Titan: Evidence for surface diversity
J. W. Barnes, R. H. Brown, E. P. Turtle, A. S. McEwen, R. D. Lorenz, M. Janssen, E.L. Schaller, M.E. Brown, B. J. Buratti, Christophe Sotin, C. Griffith, R. Clark, J. Perry, S. Fussner, J. Barbara, R. West, C. Elachi, A.H. Bouchez, H.G. Roe, K. H. Baines, G. Bellucci, J.-P. Bibring, F. Capaccioni, P. Cerroni, M. Combes, A. Coradini, D. P. Cruikshank, P. Drossart, V. Formisano, R. Jaumann, Y. Langevin, D. L. Matson, T. B. McCord, P. D. Nicholson, B. Sicardy
2005, Science (310) 92-95
Observations from the Cassini Visual and Infrared Mapping Spectrometer show an anomalously bright spot on Titan located at 80??W and 20??S. This area is bright in reflected tight at all observed wavelengths, but is most noticeable at 5 microns. The spot is associated with a surface albedo feature identified in...
Human land use influences chronic wasting disease prevalence in mule deer
Matthew L. Farnsworth, L.L. Wolfe, N.T. Hobbs, K.P. Burnham, E.S. Williams, D.M. Theobald, M.M. Conner, M.W. Miller
2005, Ecological Applications (15) 119-126
Human alteration of landscapes can affect the distribution, abundance, and behavior of wildlife. We explored the effects of human land use on the prevalence of chronic wasting disease (CWD) in mule deer (Odocoileus hemionus) populations residing in north-central Colorado. We chose best approximating models estimating CWD prevalence in relation to...
Trematodes associated with mangrove habitat in Puerto Rican salt marshes
K. D. Lafferty, R. F. Hechinger, J. Lorda, L. Soler
2005, Journal of Parasitology (91) 697-699
Batillaria minima is a common snail in the coastal estuaries of Puerto Rico. This snail is host to a variety of trematodes, the most common being Cercaria caribbea XXXI, a microphallid species that uses crabs as second intermediate hosts. The prevalence of infection was higher (7.1%) near mangroves than on...
Radar stage uncertainty
J.M. Fulford, W.J. Davies
2005, Conference Paper, World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress
The U.S. Geological Survey is investigating the performance of radars used for stage (or water-level) measurement. This paper presents a comparison of estimated uncertainties and data for radar water-level measurements with float, bubbler, and wire weight water-level measurements. The radar sensor was also temperature-tested in a laboratory. The uncertainty estimates...
Home range, territoriality, and flight time budgets in the black-bellied fruit bat, Melonycteris melanops (Pteropodidae)
F.J. Bonaccorso, J.R. Winkelmann, D.G.P. Byrnes
2005, Journal of Mammalogy (86) 931-936
Based on 1,362 radiotelemetry positions, mean home range for 10 adult black-bellied fruit bats, Melonycteris melanops (Pteropodidae), in lowland rainforest at Mount Garbuna, West New Britain Province, Papua New Guinea, was 2.3 ha ?? 1.2 SD. Mean core-use area of adults was 0.5 ha ?? 0.4 SD, and mean long...
Variations in the Arctic's multiyear sea ice cover: A neural network analysis of SMMR-SSM/I data, 1979-2004
G. I. Belchansky, David C. Douglas, V.A. Eremeev, Nikita G. Platonov
2005, Geophysical Research Letters (32) 1-4
A 26-year (1979-2004) observational record of January multiyear sea ice distributions, derived from neural network analysis of SMMR-SSM/I passive microwave satellite data, reveals dense and persistent cover in the central Arctic basin surrounded by expansive regions of highly fluctuating interannual cover. Following a decade of quasi equilibrium, precipitous declines in...
Technical review of the status of Northern Goshawks in the western United States
D. E. Andersen, S. DeStefano, M.I. Goldstein, K. Titus, C. Crocker-Bedford, J.J. Keane, R.G. Anthony, Robert N. Rosenfield
2005, Journal of Raptor Research (39) 192-209
The U.S. Fish and Wildlife Service (FWS) was petitioned in 1997 to consider listing Northern Goshawks (Accipiter gentilis atricapillus) under the Endangered Species Act of 1973, west of the 100th meridian of the contiguous United States. In their 12-mo finding issued in June 1998, the FWS determined that listing this...
Mineral resource of the month: boron
Phyllis A. Lyday
2005, Geotimes (2005) 45-45
What does boron have to do with baseball, apple pie, motherhood and Chevrolet? Boron minerals and chemicals are used in the tanning of leather baseballs and gloves; in micro-fertilizer to grow apples and in the glass and enamels of bakewares to cook apple pie; in boron detergents for soaking baby...
A physical model for strain accumulation in the San Francisco Bay Region
F. F. Pollitz, M. Nyst
2005, Geophysical Journal International (160) 302-317
Strain accumulation in tectonically active regions is generally a superposition of the effects of background tectonic loading, steady-state dislocation processes, such as creep, and transient deformation. In the San Francisco Bay region (SFBR), the most uncertain of these processes is transient deformation, which arises primarily in association with large earthquakes....
Dating the growth of oceanic crust at a slow-spreading ridge
J.J. Schwartz, Barbara E. John, Michael J. Cheadle, E.A. Miranda, Craig B. Grimes, J. L. Wooden, H.J.B. Dick
2005, Science (310) 654-657
Nineteen uranium-lead zircon ages of lower crustal gabbros from Atlantis Bank, Southwest Indian Ridge, constrain the growth and construction of oceanic crust at this slow-spreading midocean ridge. Approximately 75% of the gabbros accreted within error of the predicted seafloor magnetic age, whereas ???25% are significantly older. These anomalously old samples...
Continuing sea otter population declines in the aleutian archipelago
J. A. Estes, M. T. Tinker, A. M. Doroff, D. M. Burn
2005, Marine Mammal Science (21) 169-172
No abstract available....
Effects of suburban development on runoff generation in the Croton River basin, New York, USA
Douglas A. Burns, T. Vitvar, J. McDonnell, J. Hassett, J. Duncan, Carol Kendall
2005, Journal of Hydrology (311) 266-281
The effects of impervious area, septic leach-field effluent, and a riparian wetland on runoff generation were studied in three small (0.38–0.56 km2) headwater catchments that represent a range of suburban development (high density residential, medium density residential, and undeveloped) within the Croton River basin, 70 km north of New York City. Precipitation, stream...
Differentiation of commercial vermiculite based on statistical analysis of bulk chemical data: Fingerprinting vermiculite from Libby, Montana U.S.A
M. E. Gunter, E. Singleton, B.R. Bandli, H.A. Lowers, G.P. Meeker
2005, American Mineralogist (90) 749-754
Major-, minor-, and trace-element compositions, as determined by X-ray fluorescence (XRF) analysis, were obtained on 34 samples of vermiculite to ascertain whether chemical differences exist to the extent of determining the source of commercial products. The sample set included ores from four deposits, seven commercially available garden products, and insulation...
Allocating harvests among polar bear stocks in the Beaufort Sea
Steven C. Amstrup, George M. Durner, I. Stirling, T. L. McDonald
2005, Arctic (58) 247-259
Recognition that polar bears are shared by hunters in Canada and Alaska prompted development of the “Polar Bear Management Agreement for the Southern Beaufort Sea.” Under this Agreement, the harvest of polar bears from the southern Beaufort Sea (SBS) is shared between Inupiat hunters of Alaska and Inuvialuit hunters of...
Evidence for magmatic evolution and diversity on Mars from infrared observations
P. R. Christensen, H.Y. McSween Jr., J. L. Bandfield, S. W. Ruff, A.D. Rogers, V.E. Hamilton, N. Gorelick, M.B. Wyatt, B. M. Jakosky, H. H. Kieffer, M. C. Malin, J.E. Moersch
2005, Nature (436) 504-509
Compositional mapping of Mars at the 100-metre scale with the Mars Odyssey Thermal Emission Imaging System (THEMIS) has revealed a wide diversity of igneous materials. Volcanic evolution produced compositions from low-silica basalts to high-silica dacite in the Syrtis Major caldera. The existence of dacite demonstrates that highly evolved lavas have...
Basal tissue structure in the earliest euconodonts: Testing hypotheses of developmental plasticity in euconodont phylogeny
X.-P. Dong, P.C.J. Donoghue, J.E. Repetski
2005, Palaeontology (48) 411-421
The hypothesis that conodonts are vertebrates rests solely on evidence of soft tissue anatomy. This has been corroborated by microstructural, topological and developmental evidence of homology between conodont and vertebrate hard tissues. However, these conclusions have been reached on the basis of evidence from highly derived euconodont taxa and the...
Behavior, ecology, and detection surveys of mammalian carnivores in the Presidio
E. E. Boydston
2005, Report
No abstract available at this time...
Discovery of 100-160-year-old iceberg gouges and their relation to halibut habitat in Glacier Bay, Alaska
P.R. Carlson, P.N. Hooge, G.R. Cochrane
2005, American Fisheries Society Symposium (41) 235-243
Side-scan sonar and multibeam imagery of Glacier Bay, Alaska, revealed complex iceberg gouge patterns at water depths to 135 m on the floor of Whidbey Passage and south to the bay entrance. These previously undiscovered gouges likely formed more than 100 years ago as the glacier retreated rapidly up Glacier...
Symposium on agency bargaining behavior in multi-party environmental negotiations: Part I
B. L. Lamb, N.P. Lovrich, editor(s)
2005, International Journal of Organization Theory and Behavior (8) 174-273
No abstract available....
Managing inland wetlands for wildlife
M.K. Laubhan, S.L. King, L.H. Fredrickson
2005, Book chapter, Techniques for wildlife investigations and management
Rana catesbeiana (American Bullfrog). Chytridiomycosis
Christopher A. Pearl, D. E. Green
2005, Herpetological Review (36) 305-306
No abstract available....
Lesser scaup Aythya affinis
Jane E. Austin, Christine M. Custer, Alan D. Afton
Janet Kear, editor(s)
2005, Book chapter, Ducks, geese, and swans
No abstract available....