Publications
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Lead toxicosis in tundra swans near a mining and smelting complex in northern Idaho Lead toxicosis in tundra swans near a mining and smelting complex in northern Idaho
Die-offs of waterfowl have occurred in the Coeur d'Alene River system in northern Idaho since at least the early 1900's. We investigated causes of mortality and lead and cadmium contamination of 46 tundra swans (Cygnus columbianus) from 1987 to 1989; an additional 22 swans found dead in 1990 were not examined. We necropsied 43 of the 46 birds found from 1987 to 1989; 38 of these were...
Authors
Lawrence J. Blus, Charles J. Henny, David J. Hoffman, Robert A. Grove
Lead accumulation and osprey production near a mining site on the Coeur d'Alene River, Idaho Lead accumulation and osprey production near a mining site on the Coeur d'Alene River, Idaho
Mining and smelting at Kellogg-Smelterville, Idaho, resulted in high concentrations of lead in Coeur d'Alene (CDA) River sediments 15–65 km downstream, where ospreys (Pandion haliaetus) nested. Adult and nestling ospreys living along the CDA River had significantly higher blood lead concentrations than those at Lake Coeur d'Alene (intermediate area) or Pend Oreille and Flathead Lakes...
Authors
Charles J. Henny, Lawrence J. Blus, David J. Hoffman, Robert A. Grove, Jeffrey S. Hatfield
Flight performance energetics and water turnovers of Tippler Pigeons with a harness and doorsal load Flight performance energetics and water turnovers of Tippler Pigeons with a harness and doorsal load
We measured carbon dioxide production and water efflux of 12 tippler pigeons (Columba spp.) during seven experimental flights using the doubly labeled water (DLW) method. Prior to the experiment birds were randomly assigned to one of two groups. One group flew as controls (no load or harness) on all seven flights. The other group wore a harness on two flights, a dorsal load/harness...
Authors
James A. Gessaman, Gar W. Workman, Mark R. Fuller
Resting metabolic rate of golden eagles, bald eagles, and barred owls harnessed with a tracking transmitter or an equivalent load Resting metabolic rate of golden eagles, bald eagles, and barred owls harnessed with a tracking transmitter or an equivalent load
No abstract available.
Authors
J.A. Gessaman, M.R. Fuller, P.J. Pekins, G.E. Duke
Influences of adjacent forest management activities on migratory elk of Mount Rainier National Park: Final report Influences of adjacent forest management activities on migratory elk of Mount Rainier National Park: Final report
No abstract available.
Authors
Kurt J. Jenkins, Edward E. Starkey
Elk in Olympic National Park: Will they persist over time? Elk in Olympic National Park: Will they persist over time?
No abstract available.
Authors
D.B. Houston, Edward G. Schreiner, Bruce B. Moorhead, K.A. Krueger
Effects of livestock grazing on raptors with emphasis on the southwestern U.S. Effects of livestock grazing on raptors with emphasis on the southwestern U.S.
No abstract available
Authors
Michael N. Kochert, B.A. Millsap, K. Steenhof
Energetic constraints on winter habitat selection by cervids in Glacier National Park Energetic constraints on winter habitat selection by cervids in Glacier National Park
No abstract available.
Authors
K.J. Jenkins, R.G. Wright
Roosevelt elk density in old-growth forests of Olympic National Park Roosevelt elk density in old-growth forests of Olympic National Park
We explored the feasibility of censusing Roosevelt elk from a helicopter in the dense old growth forests of Olympic National Park. WA. Mean observed densities ranged from 8.0-11.6 elk/km2, with coefficients of variation averaging 19.9 percent. A provisional sightability factor of 74 percent suggested that actual mean densities ranged from 10.8-16.0 elk/km2. We conclude that estimates of...
Authors
D.B. Houston, Bruce B. Moorhead, R.W. Olson
Organochlorine-induced mortality and residues in long-billed curlews from Oregon Organochlorine-induced mortality and residues in long-billed curlews from Oregon
No abstract available.
Authors
L. J. Blus, Charles J. Henny, A. J. Krynitsky
Elk and deer diets in old-growth forests in western Washington Elk and deer diets in old-growth forests in western Washington
Dietary quality and overlap of sympatric Roosevelt elk (Cervus elaphus roosevelti) and Columbian black-tailed deer (Odocoileus hemionus columbianus) were investigated in old-growth forests of the Hoh Valley, Olympic National Park, Washington. Diets of both cervids were comprised mainly of common old-growth flora, particularly in winter. High dietary overlap suggested competitive...
Authors
David M. Leslie, Edward E. Starkey, Martin Vavra
Mapping of hydrothermal alteration in the Cuprite mining district, Nevada, using aircraft scanner images for the spectral region 0.46 to 2.36µm Mapping of hydrothermal alteration in the Cuprite mining district, Nevada, using aircraft scanner images for the spectral region 0.46 to 2.36µm
Color composites of Landsat Multispectral Scanner ratio images that display variations in the intensity of ferric-iron absorption bands are highly effective for mapping limonitic altered rocks but are ineffective for mapping nonlimonitic altered rocks. Analysis of 0.45- to 2.5-µm field and laboratory spectra shows that iron-deficient opalized rocks in the Cuprite mining district, Nevada...
Authors
M. J. Adams, Roger P. Ashley, L. C. Rowan, Alexander F.H. Goetz, A.B. Kahle