Chronic Wasting Disease Positive Tissue Bank
Scott D. Wright
2007, Fact Sheet 2007-3059
In 2005, the USGS National Wildlife Health Center entered into an agreement with the Wyoming Game and Fish Department and the Department of Veterinary Sciences at the University of Wyoming to produce a collection of positive tissues from cervids intentionally infected with chronic wasting disease. This agreement was facilitated through...
Infectious Diseases of Wild Birds
N. J. Thomas, D. Bruce Hunter, C. T. Atkinson
2007, Book
Understanding knowledge and perceptions of bats among residents of Fort Collins, Colorado
Natalie R. Sexton, Susan C. Stewart
2007, Open-File Report 2007-1245
As regional urbanization increases in Colorado, so do interactions between humans and wildlife. Where previous habitat has been reduced due to urbanization and development, a few bat species that easily adapt to new environments now roost in homes and buildings (Kunz and Reynolds, 2003). Bats frequently serve as reservoirs of...
Simulation of flow and habitat conditions under ice, Cache la Poudre River - January 2006
Terry Waddle
2007, Open-File Report 2007-1282
The U.S. Forest Service authorizes the occupancy and use of Forest Service lands by various projects, including water storage facilities, under the Federal Land Policy and Management Act. Federal Land Policy and Management Act permits can be renewed at the end of their term. The U.S. Forest Service analyzes the...
Larval exposure to 4-nonylphenol and 17β-estradiol affects physiological and behavioral development of seawater adaptation in Atlantic salmon smolts
Darrren T. Lerner, Bjorn Thrandur Bjornsson, Stephen D. McCormick
2007, Environmental Science & Technology (41) 4479-4485
Population declines of anadromous salmonids are attributed to anthropogenic disturbances including dams, commercial and recreational fisheries, and pollutants, such as estrogenic compounds. Nonylphenol (NP), a xenoestrogen, is widespread in the aquatic environment due to its use in agricultural, industrial, and household products. We exposed Atlantic salmon yolk-sac larvae to waterborne...
Mars reconnaissance orbiter's high resolution imaging science experiment (HiRISE)
Alfred S. McEwen, Eric M. Eliason, James W. Bergstrom, Nathan T. Bridges, Candice J. Hansen, W. Alan Delamere, John A. Grant, Virginia C. Gulick, Kenneth E. Herkenhoff, Laszlo P. Keszthelyi, Randolph L. Kirk, Michael T. Mellon, Steven W. Squyres, Nicolas Thomas, Catherine M. Weitz
2007, Journal of Geophysical Research E: Planets (112)
The HiRISE camera features a 0.5 m diameter primary mirror, 12 m effective focal length, and a focal plane system that can acquire images containing up to 28 Gb (gigabits) of data in as little as 6 seconds. HiRISE will provide detailed images (0.25 to 1.3 m/pixel) covering ∼1% of...
Fault locking, block rotation and crustal deformation in the Pacific Northwest
Robert McCaffrey, Anthony I. Qamar, Robert W. King, Ray E. Wells, G. Khazaradze, C.A. Williams, C.W. Stevens, J.J. Vollick, P.C. Zwick
2007, Geophysical Journal International (169) 1315-1340
We interpret Global Positioning System (GPS) measurements in the northwestern United States and adjacent parts of western Canada to describe relative motions of crustal blocks, locking on faults and permanent deformation associated with convergence between the Juan de Fuca and North American plates. To estimate angular velocities of the...
Massive edifice failure at Aleutian arc volcanoes
Michelle L. Coombs, S.M. White, D.W. Scholl
2007, Earth and Planetary Science Letters (256) 403-418
Along the 450-km-long stretch of the Aleutian volcanic arc from Great Sitkin to Kiska Islands, edifice failure and submarine debris-avalanche deposition have occurred at seven of ten Quaternary volcanic centers. Reconnaissance geologic studies have identified subaerial evidence for large-scale prehistoric collapse events at five of the centers (Great Sitkin, Kanaga,...
Long-term monitoring of growth in the Eastern Elliptio, Elliptio complanata (Bivalvia: Unionidae), in Rhode Island: A transplant experiment
D.H. Kesler, T.J. Newton, L. Green
2007, Journal of the North American Benthological Society (26) 123-133
The lengths of marked specimens of the freshwater mussel, Eastern Elliptio (Elliptio complanata [Lightfoot 1786]), were monitored annually in 3 lakes in Rhode Island, USA, from 1991 to 2005. Mussels growing in Worden Pond showed a change in mean shell length of only 4.3 mm over 14 y, whereas mussel...
Reproductive strategies of northern geese: Why wait?
Craig R. Ely, K.S. Bollinger, R.V. Densmore, T.C. Rothe, M.J. Petrula, John Y. Takekawa, D.L. Orthmeyer
2007, The Auk (124) 594-605
Migration and reproductive strategies in waterbirds are tightly linked, with timing of arrival and onset of nesting having important consequences for reproductive success. Whether migratory waterbirds are capital or income breeders is predicated by their spring migration schedule, how long they are on breeding areas before nesting, and how adapted...
Sap flow characteristics of neotropical mangroves in flooded and drained soils
Ken W. Krauss, P. Joy Young, Jim L. Chambers, Thomas W. Doyle, Robert R. Twilley
2007, Tree Physiology (27) 775-783
Effects of flooding on water transport in mangroves have previously been investigated in a few studies, most of which were conducted on seedlings in controlled settings. In this study, we used heat-dissipation sap probes to determine if sap flow (Js) attenuates with radial depth into the xylem of mature trees...
USGS humanitarian and geospatial response for search and rescue after Hurricanes Katrina and Rita
Steve Hartley
2007, Circular 1306-3A
The U.S. Geological Survey (USGS) assisted State and Federal agencies with humanitarian aid and geospatial analyses in support of search and rescue operations after Hurricanes Katrina and Rita....
The role of headwater streams in downstream water quality
R. B. Alexander, E.W. Boyer, R. A. Smith, G. E. Schwarz, R. B. Moore
2007, Journal of the American Water Resources Association (43) 41-59
Knowledge of headwater influences on the water-quality and flow conditions of downstream waters is essential to water-resource management at all governmental levels; this includes recent court decisions on the jurisdiction of the Federal Clean Water Act (CWA) over upland areas that contribute to larger downstream water bodies. We review current...
Biology and impacts of Pacific island invasive species. 2. Boiga irregularis, the Brown Tree Snake (Reptilia: Colubridae)
Gordon H. Rodda, Julie A. Savidge
2007, Pacific Science (61) 307-324
The Brown Tree Snake, Boiga irregularis (Merrem, 1802), was accidentally transported to the island of Guam shortly after World War II. Over the following two decades it spread throughout the island with little public or professional recognition of its extent or impacts. This secretive nocturnal arboreal snake occurs in all...
Natural versus anthropogenic dispersion of metals to the environment in the Wulik River area, western Brooks Range, northern Alaska
K.D. Kelley, T. Hudson
2007, Geochemistry: Exploration, Environment, Analysis (7) 87-96
Zinc-lead-silver mineral deposits in the Wulik River region, Alaska, contain an enormous accumulation of Zn. In addition to the giant deposits at Red Dog, at least nine other deposits are known. Natural weathering of these deposits has dispersed metals over a wide region over a long period of time (c....
Population-scale movement of coastal cutthroat trout in a naturally isolated stream network
R. E. Gresswell, S.R. Hendricks
2007, Transactions of the American Fisheries Society (136) 238-253
To identify population‐scale patterns of movement, coastal cutthroat trout Oncorhynchus clarkii clarkii tagged and marked (35 radio‐tagged, 749 passive integrated transponder [PIT]‐tagged, and 3,025 fin‐clipped) were monitored from June 1999 to August 2000. The study watershed, located in western Oregon, was above a natural barrier to upstream movement. Emigration...
Ages and origins of rocks of the Killingworth dome, south-central Connecticut: Implications for the tectonic evolution of southern New England
J. N. Aleinikoff, R. P. Wintsch, R.P. Tollo, D.M. Unruh, C.M. Fanning, M.D. Schmitz
2007, American Journal of Science (307) 63-118
The Killingworth dome of south-central Connecticut occurs at the southern end of the Bronson Hill belt. It is composed of tonalitic and trondhjemitic orthogneisses (Killingworth complex) and bimodal metavolcanic rocks (Middletown complex) that display calc-alkaline affinities. Orthogneisses of the Killingworth complex (Boulder Lake gneiss, 456 ?? 6 Ma; Pond Meadow...
Pleistocene Brawley and Ocotillo Formations: Evidence for initial strike-slip deformation along the San Felipe and San Jacinto fault zonez, Southern California
S.M. Kirby, S. U. Janecke, R.J. Dorsey, B.A. Housen, V.E. Langenheim, K. A. McDougall, A.N. Steeley
2007, Journal of Geology (115) 43-62
We examine the Pleistocene tectonic reorganization of the Pacific-North American plate boundary in the Salton Trough of southern California with an integrated approach that includes basin analysis, magnetostratigraphy, and geologic mapping of upper Pliocene to Pleistocene sedimentary rocks in the San Felipe Hills. These deposits preserve the earliest sedimentary record...
A regression model to estimate regional ground water recharge
D. L. Lorenz, G. N. Delin
2007, Ground Water (45) 196-208
A regional regression model was developed to estimate the spatial distribution of ground water recharge in subhumid regions. The regional regression recharge (RRR) model was based on a regression of basin-wide estimates of recharge from surface water drainage basins, precipitation, growing degree days (GDD), and average basin specific yield (SY)....
Profiling refined hydrocarbon fuels using polar components
Colleen E. Rostad, Frances D. Hostettler
2007, Environmental Forensics (8) 129-137
Identification of a fuel released into the environment can be difficult due to biodegradation or weathering. Negative electrospray ionization/mass spectrometry was used to screen for unique polar components in a wide variety of commercial hydrocarbon products and mixtures. These fuels produced unique and relatively simple spectra. When applied to hydrocarbon...
Simulation of Intra- or transboundary surface-water-rights hierarchies using the farm process for MODFLOW-2000
W. Schmid, R. T. Hanson
2007, Journal of Water Resources Planning and Management (133) 166-178
Water-rights driven surface-water allocations for irrigated agriculture can be simulated using the farm process for MODFLOW-2000. This paper describes and develops a model, which simulates routed surface-water deliveries to farms limited by streamflow, equal-appropriation allotments, or a ranked prior-appropriation system. Simulated diversions account for deliveries to all...
Population dynamics and angler exploitation of the unique muskellunge population in Shoepack Lake, Voyageurs National Park, Minnesota
N.K. Frohnauer, C.L. Pierce, L.W. Kallemeyn
2007, North American Journal of Fisheries Management (27) 63-76
A unique population of muskellunge Esox masquinongy inhabits Shoepack Lake in Voyageurs National Park, Minnesota. Little is known about its status, dynamics, and angler exploitation, and there is concern for the long-term viability of this population. We used intensive sampling and mark-recapture methods to quantify abundance, survival, growth, condition, age...
Optimizing remote sensing and GIS tools for mapping and managing the distribution of an invasive mangrove (Rhizophora mangle) on South Molokai, Hawaii
M. D'Iorio, S.D. Jupiter, S.A. Cochran, D.C. Potts
2007, Marine Geodesy (30) 125-144
In 1902, the Florida red mangrove, Rhizophora mangle L., was introduced to the island of Molokai, Hawaii, and has since colonized nearly 25% of the south coast shoreline. By classifying three kinds of remote sensing imagery, we compared abilities to detect invasive mangrove distributions and to discriminate mangroves from surrounding...
Thermal, chemical, and optical properties of Crater Lake, Oregon
G.L. Larson, R.L. Hoffman, D. C. McIntire, M.W. Buktenica, S.F. Girdner
2007, Hydrobiologia (574) 69-84
Crater Lake covers the floor of the Mount Mazama caldera that formed 7700 years ago. The lake has a surface area of 53 km2 and a maximum depth of 594 m. There is no outlet stream and surface inflow is limited to small streams and springs. Owing to its great...
Flocculation, heavy metals (Cu, Pb, Zn) and the sand-mud transition on the Adriatic continental shelf, Italy
D.A. George, P.S. Hill, T.G. Milligan
2007, Continental Shelf Research (27) 475-488
Across a limited depth range (5-10 m) on many continental shelves, the dominant sediment size changes from sand to mud. This important boundary, called the sand-mud transition (SMT), separates distinct benthic habitats, causes a significant change in acoustic backscatter, represents a key facies change, and delimits more surface-reactive mud from...
