Aeromagnetic mapping of the structure of Pine Canyon caldera and Chisos Mountains intrusion, Big Bend National Park, Texas
B. J. Drenth, C. A. Finn
2007, Geological Society of America Bulletin (119) 1521-1534
Analysis of aeromagnetic and gravity data reveals new details of the structure, igneous geology, and temporal evolution of the prominent, enigmatic ca.32 Ma Pine Canyon caldera and the Chisos Mountains (Big Bend National Park, Texas). The main caldera-filling Pine Canyon Rhyolite, the oldest member of the South Rim Formation, is...
Fate and identification of oil-brine contamination in different hydrogeologic settings
Donald O. Whittemore
2007, Applied Geochemistry (22) 2099-2114
Past disposal of oil-field brine at the surface has caused substantial contamination of water resources in Kansas. Natural saline water occurs in and discharges from Permian bedrock in parts of the state, and other anthropogenic sources of saline water exist, requiring clear identification of different sources. Time-series analysis of Cl-...
Forest dynamics in Oregon landscapes: Evaluation and application of an individual-based model
R. T. Busing, A.M. Solomon, R.B. McKane, C.A. Burdick
2007, Ecological Applications (17) 1967-1981
The FORCLIM model of forest dynamics was tested against field survey data for its ability to simulate basal area and composition of old forests across broad climatic gradients in western Oregon, USA. The model was also tested for its ability to capture successional trends in ecoregions of the west Cascade...
Suspended sediment and sediment-associated contaminants in San Francisco Bay
D. H. Schoellhamer, T.E. Mumley, J.E. Leatherbarrow
2007, Environmental Research (105) 119-131
Water-quality managers desire information on the temporal and spatial variability of contaminant concentrations and the magnitudes of watershed and bed-sediment loads in San Francisco Bay. To help provide this information, the Regional Monitoring Program for Trace Substances in the San Francisco Estuary (RMP) takes advantage of the association of many contaminants with sediment particles...
Chesapeake Inundation Prediction System (CIPS): A regional prototype for a national problem
B. Stamey, W. Smith, K. Carey, D. Garbin, F. Klein, Hongfang Wang, J. Shen, W. Gong, J. Cho, D. Forrest, C. Friedrichs, W. Boicourt, M. Li, M. Koterba, D. King, J. Titlow, E. Smith, A. Siebers, J. Billet, J. Lee, Douglas R. Manning, G. Szatkowski, D. Wilson, P. Ahnert, J. Ostrowski
2007, Conference Paper, Oceans Conference Record (IEEE)
Recent Hurricanes Katrina and Isabel, among others, not only demonstrated their immense destructive power, but also revealed the obvious, crucial need for improved storm surge forecasting and information delivery to save lives and property in future storms. Current operational methods and the storm surge and inundation products do not adequately...
Clinical biochemistry in healthy manatees (Trichechus manatus latirostris)
J. W. Harvey, K.E. Harr, D. Murphy, M.T. Walsh, E.J. Chittick, R. K. Bonde, M.G. Pate, C. J. Deutsch, H.H. Edwards, E.M. Haubold
2007, Journal of Zoo and Wildlife Medicine (38) 269-279
Florida manatees (Trichechus manatus latirostris) are endangered aquatic mammals living in coastal and riverine waterways of Florida and adjacent states. Serum or plasma biochemical analyses are important tools in evaluating the health of free-ranging and captive manatees. The purpose of this study was to measure diagnostically important analytes in the...
Recent results on the spatiotemporal modelling and comparative analysis of Black Death and bubonic plague epidemics
G. Christakos, Ricardo A. Olea, H.-L. Yu
2007, Public Health (121) 700-720
Background: This work demonstrates the importance of spatiotemporal stochastic modelling in constructing maps of major epidemics from fragmentary information, assessing population impacts, searching for possible etiologies, and performing comparative analysis of epidemics. Methods: Based on the theory previously published by the authors and incorporating new knowledge bases, informative maps of...
Identifying biotic integrity and water chemistry relations in nonwadeable rivers of Wisconsin: Toward the development of nutrient criteria
B.M. Weigel, Dale M. Robertson
2007, Environmental Management (40) 691-708
We sampled 41 sites on 34 nonwadeable rivers that represent the types of rivers in Wisconsin, and the kinds and intensities of nutrient and other anthropogenic stressors upon each river type. Sites covered much of United States Environmental Protection Agency national nutrient ecoregions VII-Mostly Glaciated Dairy Region, and VIII-Nutrient Poor,...
Assessment of gaseous CO2 and AQUI-S as anesthetics when surgically implanting radio transmitters into cutthroat trout
T.B. Sanderson, W.A. Hubert
2007, North American Journal of Fisheries Management (27) 1053-1057
Tricaine methanesulfonate (MS-222) and CO2 are anesthetics that can be legally used in fisheries work in the United States, but they are limited in their field applications. A mandatory 21-d withdrawal period is required for fish exposed to MS-222. Carbon dioxide is not approved by the U.S. Food and Drug...
Local annual survival and seasonal residency rates of Semipalmated Sandpipers (Calidris pusilla) in Puerto Rico
S.M. Rice, J.A. Collazo, M.W. Alldredge, B. A. Harrington, A.R. Lewis
2007, The Auk (124) 1397-1406
We report seasonal residency and local annual survival rates of migratory Semipalmated Sandpipers (Calidris pusilla) at the Cabo Rojo salt flats, Puerto Rico. Residency rate (daily probability of remaining on the flats) was 0.991 ± 0.001 (x̄ ± SE), yielding a mean length of stay of 110 days. This finding...
First documentation of tidal-channel sponge biostromes (upper Pleistocene, southeastern Florida)
K.J. Cunningham, J.K. Rigby, M.A. Wacker, H.A. Curran
2007, Geology (35) 475-478
Sponges are not a common principal component of Cenozoic reefs and are more typically dominant in deep-water and/or cold-water localities. Here we report the discovery of extensive upper Pleistocene shallow-marine, tropical sponge biostromes from the Mami Limestone of southeastern Florida built by a new ceractinomorph demosponge. These upright, barrel- to...
Sulfur species behavior in soil organic matter during decomposition
A.W. Schroth, B.C. Bostick, M. Graham, J.M. Kaste, M.J. Mitchell, A. J. Friedland
2007, Journal of Geophysical Research G: Biogeosciences (112)
Soil organic matter (SOM) is a primary re??servoir of terrestrial sulfur (S), but its role in the global S cycle remains poorly understood. We examine S speciation by X-ray absorption near-edge structure (XANES) spectroscopy to describe S species behavior during SOM decomposition. Sulfur species in SOM were best represented by...
Twenty-four years of Great Lakes lichen studies provide park biomonitoring baselines
J. P. Bennett
2007, Report D-1859
Brown-headed cowbird, Molothrus ater, parasitism and abundance in the northern Great Plains
L.D. Igl, Douglas H. Johnson
2007, Canadian Field-Naturalist (121) 239-255
The Brown-headed Cowbird (Molothrus ater) reaches its highest abundance in the northern Great Plains, but much of our understanding of cowbird ecology and host-parasite interactions comes from areas outside of this region. We examine cowbird brood parasitism and densities during two studies of breeding birds in the northern Great Plains...
Contaminated salmon and the public's trust
Samuel N. Luoma, Ragnar E. Lofstedt
2007, Environmental Science & Technology (41) 1811-1814
Scientific uncertainties often make it difficult for environmental policy makers to determine how to communicate risks to the public. A constructive, holistic, multisectoral dialogue about an issue can improve understanding of uncertainties from different perspectives and clarify options for risk communication. Many environmental issues could benefit from explicit promotion of...
Major and Trace-Element Data from Stream-Sediment and Rock Samples Collected in the Taylor Mountains 1:250,000-Scale Quadrangle, Alaska
Elizabeth A. Bailey, Gregory K. Lee, Seth H. Mueller, Bronwen Wang, Zoe Ann Brown, Greg A. Beischer
2007, Open-File Report 2007-1196
In the summers of 2004, 2005, and 2006, the U.S. Geological Survey conducted a reconnaissance geochemical survey of the drainage basins throughout most of the Taylor Mountains 1:250,000-scale quadrangle, in southwestern Alaska. The purpose of the study was to locate areas of potential interest for ore minerals, provide data that...
Ecological interactions between hatchery spring Chinook salmon and wild steelhead in the Wind River, Washington, Report for activities in 2004 - 2006
I.G. Jezorek, P.J. Connolly, C.S. Munz, J. Charrier
2007, Report
n/a...
Physiological development of reintroduced Chinook salmon in the Upper Klamath Basin. 2006 final report
A.G. Maule, S. P. VanderKooi, J. Hamilton, R. Stocking, J. Bartholomew
2007, Report
n/a...
Behavior and passage of juvenile salmonids during evaluation of a fish screen at Cowlitz Falls, Dam, 2007: Final Report of Research
T.L. Liedtke, T.J. Kock, M.A Kritter, B.K. Ekstrom, D.W. Rondorf
2007, Report
n/a...
Migration behavior of radio-tagged adult coho salmon and steelhead in the upper North Fork Toutle River, Washington: Final report of research 2005-2006
T.J. Kock, T.L. Liedtke, M.A Kritter, R.W. Perry, D.W. Rondorf, D.R. Hinson, C.R. Steward III, S. Wills
2007, Report
n/a ...
Salmon, forests, and pre-restoration assessment using stable isotope analysis on riparian vegetation
J. M. Minion, D. Barry, L. Urbanec, A. Gray, J.J. Duda
2007, Ecological Restoration (25) 211-231
No abstract available....
Meter-scale morphology of the north polar region of mars
Kenneth E. Herkenhoff, S. Byrne, P.S. Russell, K.E. Fishbaugh, A. S. McEwen
2007, Science (317) 1711-1715
Mars' north pole is covered by a dome of layered ice deposits. Detailed (∼30 centimeters per pixel) images of this region were obtained with the High-Resolution Imaging Science Experiment on board the Mars Reconnaissance Orbiter (MRO). Planum Boreum basal unit scarps reveal cross-bedding and show evidence for recent mass wasting,...
High arsenic concentrations and enriched sulfur and oxygen isotopes in a fractured-bedrock ground-water system
G. Lipfert, W.C. Sidle, A.S. Reeve, R. A. Ayuso, A.J. Boyce
2007, Chemical Geology (242) 385-399
Ground water with high arsenic concentrations (up to 26.6????mol L- 1) has sulfate enriched in 34S and 18O in the fractured-bedrock, ground-water system of the Kelly's Cove watershed, Northport, Maine, USA. The ranges of sulfur and oxygen isotope values in aqueous sulfate, ??34S[SO4] and ??18O[SO4], at the Kelly's Cove watershed...
Anza-Terwilliger study wells in Riverside County, California
Andrew Morita, Dennis A. Clark, Peter Martin
2007, Report
This digital data set contains the locations, water-level altitude, and water-level differences of 70 wells selected to document water-level changes between fall 2004 and spring 2005 in the Anza-Terwilliger area of Riverside County, California. The winter of 2005 was one of the wettest periods on record. Links to...
Grids of agricultural pesticide use in the conterminous United States, 1997
Naomi Nakagaki
2007, Report
This spatial dataset consists of 219 1-kilometer (km) resolution grids depicting estimated agricultural use of 219 pesticides in 1997 for the conterminous United States. Each grid cell value in the national grids of this dataset is the estimated total kilograms (kg) of a pesticide applied to row crops, small grain...
