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Page 4189, results 104701 - 104725

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Body composition and weight dynamics of wintering greater white-fronted geese
Craig R. Ely, Dennis G. Raveling
1989, Journal of Wildlife Management (53) 80-87
Adult greater white-fronted geese (Anser albifrons frontalis) wintering in southern Oregon and California increased or maintained body weight in autumn, lost weight from autumn through winter, and rapidly increased in weight before spring migration in late April. We documented significant annual differences in body weights for both sexes. We related...
Acute gastric dilatation and volvulus in a free-living polar bear
Steven C. Amstrup, Carol A. Nielsen
1989, Journal of Wildlife Diseases (25) 601-604
A large, adult male polar bear (Ursus maritimus) was found dead on a barrier island north of Prudhoe Bay, Alaska (USA), in June 1987. There were no external signs of trauma. A twisted distended stomach, distinctive parenchymal and fascial congestion, and significant difficulty in repositioning the...
Extra-pair copulation in the greater white-fronted goose
Craig R. Ely
1989, The Condor (91) 990-991
Controlled experiments and quantitative field studies with both captive and wild waterfowl (Family Anatidae) have demonstrated that extra-pair copulations (EPCs, both forced and unforced) may be a viable alternative reproductive strategy for males (Mineau and Cooke 1979; Burns et al. 1980; Cheng et al. 1982, 1983; Afron 1985; Evarts and...
Iterative techniques for characterizing marine bird habitats with time-series of satellite images
J. Christopher Haney
1989, Colonial Waterbirds (12) 78-89
Demonstrating long-term habitat use of marine habitats by seabirds is often complicated by short-term changes in habitat locations, persistence, and age. This paper describes iterative techniques for characterizing non-static habitats, such as meso-scale (10-100 km) ocean eddies and fronts, using time-series of satellite images that define sea surface conditions. Seabird...
Remote characterization of marine bird habitats with satellite imagery
J. Christopher Haney
1989, Colonial Waterbirds (12) 67-77
Remote sensing techniques such as radar altimetry, synthetic aperture radar, coastal zone color scanning, and infrared radiometry provide effective, instantaneous, and relatively inexpensive means for characterizing critical habitats of marine birds. In order to make optimal use of satellite-derived data, the rationale for marine habitat classification is presented, and advantages...
Mineral saturation states in natural waters and their sensitivity to thermodynamic and analytical errors
D. Kirk Nordstrom, James W. Ball
1989, Science Geological Bulletin (42) 269-280
Saturation indices computed with WATEQ4F chemical analyses from a groundwater in crystalline bedrock and a surface water receiving acid mine drainage are frequently at or above saturation with respect to calcite, fluorite, barite, gibbsite and ferrihydrite. Deep granitic groundwaters from Stripa, Sweden, are supersaturated with respect to calcite and fluorite....
The Resurrection Peninsula ophiolite
Steven W. Nelson, Marti L. Miller, Julie A. Dumoulin
Steven W. Nelson, Thomas D. Hamilton, editor(s)
1989, Book chapter, Guide to the ceology of the Resurrection Bay - Eastern Kenai Fjords area
The Resurrection Peninsula forms the east side of Resurrection Bay (fig. 3). Relief ranges from 437 m (1,434 ft) at the southern end of the peninsula to more than 1,463 m (4,800 ft) opposite the head of the bay. All rock units composing the informally named Resurrection Peninsula ophiolite of...
Nesting biology of pacific loons, Gavia pacifica, on the Yukon-Kuskokwim Delta, Alaska
Margaret R. Petersen
1989, Canadian Field-Naturalist (103) 265-269
The nesting biology of Pacific Loons, Gavia pacifica, was studied from 1973 to 1975 on the Yukon-Kuskokwim Delta, Alaska. Loons maintained territories on ponds throughout the pre-nesting period. Both adults incubated eggs and raised the young. Males incubated more than females during early incubation, and females more than males during...
Spectroscopic evidence for organic diacid complexation with dissolved silica in aqueous systems—I. Oxalic acid
N.A. Marley, P. Bennett, D.R. Janecky, J.S. Gaffney
1989, Organic Geochemistry (14) 525-528
Increased solubility of quartz and mobilization in contaminated groundwater due to the complexation with dissolved organic acids has been recently proposed [Bennett and Siegel, Nature326, 684–686 (1987)]. Using laser Raman and Fourier transform infrared spectroscopies, we have examined mixed solutions of oxalic and silicic acids at near neutral pH in...
Statistical and simulation analysis of hydraulic-conductivity data for Bear Creek and Melton Valleys, Oak Ridge Reservation, Tennessee
J. F. Connell, Z. C. Bailey
1989, Water-Resources Investigations Report 89-4062
A total of 338 single-well aquifer tests from Bear Creek and Melton Valley, Tennessee were statistically grouped to estimate hydraulic conductivities for the geologic formations in the valleys. A cross-sectional simulation model linked to a regression model was used to further refine the statistical estimates for each of the formations...
Effects of land use on the water quality and biota of three streams in the Piedmont province of North Carolina
J. K. Crawford, D. R. Lenat
1989, Water-Resources Investigations Report 89-4007
Three small streams in North Carolina 's northern Piedmont were studied to compare the effects of land use in their watersheds on water quality characteristics and aquatic biota. Devil 's Cradle Creek (agricultural watershed) had more than two times the sediment yield of Smith Creek (forested watershed) (0.34 tons/acre compared...
An investigation of shallow ground-water quality near East Fork Poplar Creek, Oak Ridge, Tennessee
J. K. Carmichael
1989, Water-Resources Investigations Report 88-4219
Alluvial soils of the flood plain of East Fork Poplar Creek in Oak Ridge, Tennessee, are contaminated with mercury and other metals, organic compounds, and radio-nuclides originating from the Y-12 Plant, a nuclear-processing facility located within the U.S. Department of Energy 's Oak Ridge Reservation. Observation wells were installed in...
Ground-water contamination at an inactive coal and oil gasification plant site, Gas Works Park, Seattle, Washington
G. L. Turney, D.F. Goerlitz
1989, Water-Resources Investigations Report 88-4224
Gas Works Park, in Seattle, Washington, is located on the site of a coal and oil gasification plant that ceased operation in 1956. During operation, many types of wastes, including coal, tar, and oil, accumulated on site. The park soil is presently (1986) contaminated with compounds such as polynuclear aromatic...
Potentiometric surface of the upper Cape Fear aquifer in the central coastal plain of North Carolina, December 1986
M. D. Winner Jr., William L. Lyke, Allen R. Brockman
1989, Water-Resources Investigations Report 87-4235
Water-level measurements were made in 84 wells open to the upper Cape Fear aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of approximately 5,500 sq mi. The major feature of the potentiometric surface is the development of a large, almost circular...
Potentiometric surface of the lower Cape Fear aquifer in the central coastal plain of North Carolina, December 1986
M. D. Winner Jr., William L. Lyke, Allen R. Brockman
1989, Water-Resources Investigations Report 87-4234
Water level measurements were made in four wells open to the lower Cape Fear aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of approximately 4,100 sq mi. Because of the scarcity of data, five earlier measurements were also used to help...
Potentiometric surface of the Peedee aquifer in the central coastal plain of North Carolina, December 1986
Allen R. Brockman, William L. Lyke, M. D. Winner Jr.
1989, Water-Resources Investigations Report 87-4236
Water level measurements were made in 37 wells open to the Peedee aquifer at the end of 1986 to determine the configuration of its potentiometric surface over an area of about 4,100 square miles in the central Coastal Plain of North Carolina. The potentiometric surface of the Peedee slopes southeastward...
Changes in saltwater intrusion in the Biscayne aquifer, Hialeah-Miami Springs area, Dade County, Florida
Howard Klein, Karl W. Ratzlaff
1989, Water-Resources Investigations Report 87-4249
A lobe of salty groundwater that had intruded the Hialeah-Miami Springs area municipal well field, adjacent to the Miami and Tamiami Canals in Dade County, Florida, was stabilized after flow-regulation structures were installed in the canals in 1946. However, in 1971, the saltwater began to readvance toward the center of...
Hydrologic effects on water level changes associated with episodic fault creep near Parkfield, California
E.A. Roeloffs, S.S. Burford, F. S. Riley, A.W. Records
1989, Journal of Geophysical Research Solid Earth (94) 12387-12402
As part of the Parkfield, California, earthquake prediction experiment, water level is monitored in a well 460 m from the main trace of the San Andreas fault on Middle Mountain, in the preparation zone of the anticipated Parkfield earthquake. The well configuration allows water level to be monitored in two...