C. A. Haskell, K.T. Tiffan, R.C. Koch, J.A. Heinz, M.G. Mesa, D.W. Rondorf
2004, Report
Abstract not available ...
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Page 2718, results 67926 - 67950
Publication Extents
Not all publications have extents, not all extents are completely accurateThomas F. Fondell, I.J. Ball
2004, Biological Conservation (117) 203-213
Grassland birds are declining at a faster rate than any other group of North American bird species. Livestock grazing is the primary economic use of grasslands in the western United States, but the effects of this use on distribution and productivity of grassland birds are unclear. We examined nest density...
R. Walker, Maria Mastalerz
2004, International Journal of Coal Geology (58) 181-191
The individual maceral chemistries of two Pennsylvanian, high volatile bituminous coals, the Danville Coal Member (Dugger Formation, R o=0.55%) and the Lower Block Coal Member (Brazil Formation, R o=0.56%) of Indiana, were investigated using electron microprobe and Fourier Transform Infrared Spectrometry (FTIR) techniques, with the purpose of understanding differences in...
Thomas Pagano, Phil Pasteris, Michael D. Dettinger, Daniel Cayan, Kelly Redmond
2004, Eos, Earth and Space Science News (85) 385-393
This spring, a rare combination of exceptionally warm temperatures and near-record lack of precipitation in the western United States caused a rapid change in hydrologic conditions and an unexpectedly early onset of spring conditions. With much of the western U.S. already in its fifth year of drought, an above-average western snowpack...
Zack Bowen
2004, Fact Sheet 2004-3147
Many challenging natural resource management issues require consideration of a web of interactions among ecosystem components. The spatial and temporal complexity of these ecosystem problems demands an interdisciplinary approach integrating biotic and abiotic processes. The goals of the Ecosystem Dynamics Branch are to provide sound science to aid federal resource...
Scott Wright, David H. Schoellhamer
2004, San Francisco Estuary and Watershed Science (2)
Human activities within a watershed, such as agriculture, urbanization, and dam building, may affect the sediment yield from the watershed. Because the equilibrium geomorphic form of an estuary is dependent in part on the sediment supply from the watershed, anthropogenic activities within the watershed have the potential to affect estuary...
Yousif K. Kharaka, Cynthia A. Rice
2004, Conference Paper, Proceedings - Natural gas technologies II: Ingenuity and innovation
Currently 20-30 billion barrels of formation water are co-produced annually in the USA with conventional oil and natural gas. The large database on the geochemistry of this produced water shows salinities that vary widely from ~5,000 to >350,000 mg/L TDS. Chloride, Na and Ca are generally the dominant ions, and...
B.L. Sherrod, T.M. Brocher, C.S. Weaver, R.C. Bucknam, R.J. Blakely, H.M. Kelsey, A.R. Nelson, R. Haugerud
2004, Geology (32) 9-12
Airborne laser mapping confirms that Holocene active faults traverse the Puget Sound metropolitan area, northwestern continental United States. The mapping, which detects forest-floor relief of as little as 15 cm, reveals scarps along geophysical lineaments that separate areas of Holocene uplift and subsidence. Along one such line of scarps, we...
D.O. Rosenberry, R. H. Morin
2004, Ground Water (42) 68-77
A commercially available electromagnetic flowmeter is attached to a seepage cylinder to create an electromagnetic seepage meter (ESM) for automating measurement of fluxes across the sediment/water interface between ground water and surface water. The ESM is evaluated through its application at two lakes in New England, one where water seeps...
Jill Baron, S. Del Grosso, D. S. Ojima, D.M. Theobald, W.J. Parton
2004, Book chapter, Ecosystems and land use change
No abstract available....
J.J. Duda, D.C. Freeman, M. L. Brown, J.H. Graham, A.J. Krzysik, J.M. Emlen, J.C. Zak, D.A. Kovacic
2004, Ecological Indicators (3) 251-262
We used developmental instability, water potential, and variable fluorescence to determine if populations of winged sumac (Rhus copallinum) were being negatively effected by military training disturbance. We established nine sites that represented a land-use disturbance gradient with three impact levels (low, medium, and high), the effects mostly due to mechanized...
Catherine A. Ruhl, David H. Schoellhamer
2004, San Francisco Estuary and Watershed Science (2)
Shallow subembayments respond differently than deep channels to physical forces acting in estuaries. The U.S. Geological Survey measured suspended-sediment concentrations at five locations in Honker Bay, a shallow subembayment of San Francisco Bay, and the adjacent channel to investigate the spatial and temporal...
Keith Geluso, J.J. Huebschman, J.A. White, M.A. Bogan
2004, Western North American Naturalist (64) 353-358
Silver-haired bats (Lasionycteris noctivagans) were thought only to migrate through Nebraska; however, recent surveys in eastern Nebraska report summer records of females and their young. Our study in western Nebraska also shows that silver-haired bats are summer residents. We discovered the 1st reproductively active L. noctivagans in this part of...
B. L. Lamb, N. Burkardt, D. Lybecker
2004, Conference Paper, Proceedings of Infrastructure and Environmental Management symposium
No abstract available....
James S. Sedinger, Mark P. Herzog, David H. Ward
2004, The Auk (121) 68-73
In geese, growth regulates survival in the first year. We examined whether early growth, which is primarily governed by environmental conditions, also affects the probability that individuals that survive their first year enter the breeding population. We used logistic regression on a sample of Black Brant (Branta bernicla nigricans) that...
J. H. Mayer, S. A. Mahan
2004, Quaternary Research (61) 72-84
New stratigraphic and geochronologic data from the Killpecker Dunes in southwestern Wyoming facilitate a more precise understanding of the dune field's history. Prior investigations suggested that evidence for late Pleistocene eolian activity in the dune field was lacking. However, luminescence ages from eolian sand of ???15,000 yr, as well as...
Thomas M. Cronin
2004, Open-File Report 2004-1350
Summary of Results: Pocomoke Sound Sediment and Sediment Processes Transport of sediment from coastal marshes. Analyses of pollen and foraminifera from surface sediments in Pocomoke Sound suggest that neither the upstream forested wetlands nor coastal marshes bordering the sound have contributed appreciably to particulate matter in the 10- to 1000-micron size...
C. John Ralph, Erica H. Dunn, Will J. Peach, Colleen M. Handel
C. John Ralph, Erica H. Dunn, editor(s)
2004, Book chapter, Monitoring bird populations using mist nets (Studies in Avian Biology no. 29)
We provide recommendations on the best practices for mist netting for the purposes of monitoring population parameters such as abundance and demography. Studies should be carefully thought out before nets are set up, to ensure that sampling design and estimated sample size will allow study objectives to be met. Station...
S.A. Wright, D. H. Schoellhamer
2004, Conference Paper, Proceedings of the 2004 CALFED Science Conference
No abstract available....
K.J. Ellefsen, J.D. Abraham, D.L. Wright, A.T. Mazzella
2004, Geophysics (69) 64-77
To understand the electromagnetic waves generated by a prototype dielectric logging tool, a numerical study was conducted using both the finite-difference, time-domain method and a frequency-wavenumber method. When the propagation velocity in the borehole was greater than that in the formation (e.g., an air-filled borehole in the unsaturated zone), only...
Bradford Butman, P. Soupy Alexander, Michael H. Bothner
2004, Data Series 87
This report presents time-series photographs of the sea floor obtained from an instrumented tripod deployed at Site A in western Massachusetts Bay (42° 22.6' N., 70? 47.0' W., 30 m water depth, from June 1997 through June 1998. Site A is approximately 1 km south of an ocean outfall that...
Berton Lee Lamb, C. Sabaton, Y. Souchon
2004, Hydroécologie Appliquée (14) 1-7
No abstract available....
Richard L. Whitman, Meredith B. Nevers, Ginger C. Korinek, Muruleedhara N. Byappanahalli
2004, Applied and Environmental Microbiology (70) 4276-4285
Studies on solar inactivation of Escherichia coli in freshwater and in situ have been limited. At 63rd St. Beach, Chicago, Ill., factors influencing the daily periodicity of culturable E. coli, particularly insolation, were examined. Water samples for E. coli analysis were collected twice daily between April and September 2000 three times a week along five...
D. E. Docherty, R. Romaine Long, Katie M. Griffin, E.K. Saito
2004, Emerging Infectious Diseases (10) 907-909
We evaluated cloacal swab, vascular pulp of flight feather, and kidney and spleen pool samples from carcasses of members of the family Corvidae as sources of West Nile virus (WNV). The cloacal swab, kidney and spleen pool, and feather pulp were the source of WNV in 38%, 43%, and 77%,...
Jon E. Keeley, C. J. Fotheringham
2004, Report
No abstract available at this time...