Publications
Filter Total Items: 2076
Vertical distribution of a deep-water moss and associated epiphytes in Crater Lake, Oregon Vertical distribution of a deep-water moss and associated epiphytes in Crater Lake, Oregon
A one-person submersible was used to examine the vertical distribution of the deep-water moss Drepanocladus aduncus (Hedw.) Warnst in Crater Lake (Oregon). Living specimens were found attached to sediment and rocks at depths between 25 m and 140 m. Dense beds of the moss were observed at depths between 30 m and 80 m, a region that corresponded roughly to the zone of maximum primary...
Authors
C. D. McIntire, H.K. Phinney, Gary L. Larson, M.W. Buktenica
Integrating limnological characteristics of high mountain lakes into the landscape of a natural area Integrating limnological characteristics of high mountain lakes into the landscape of a natural area
A general conceptual watershed-lake model of the complex interactions among climatic conditions, watershed location and characteristics, lake morphology, and fish predation was used to evaluate limnological characteristics of high mountain lakes. Our main hypothesis was that decreasing elevation in mountainous terrain corresponds to an increase in diversity of watershed size and lake...
Authors
Gary L. Larson, A. Wones, C. D. McIntire, B. Samora
Study documents mountain goat impacts at Olympic National Park Study documents mountain goat impacts at Olympic National Park
No abstract available.
Authors
Edward G. Schreiner, Andrea Woodward
Getting a handle on visitor carrying capacity - A pilot project at Arches National Park Getting a handle on visitor carrying capacity - A pilot project at Arches National Park
No abstract available.
Authors
Marilyn Hof, Jim Hammett, Michael Rees, Jayne Belnap, N. Poe, Dave Lime, Bob Manning
Successional theory and the desired plant community approach Successional theory and the desired plant community approach
No abstract available.
Authors
Michael M. Borman, David A. Pyke
Predation by dipteran larvae on fairy shrimp (Crustacea: Anostraca) in Utah rock pools Predation by dipteran larvae on fairy shrimp (Crustacea: Anostraca) in Utah rock pools
A series of experiments examined how ecological factors affect notonectid foraging success on fairy shrimp. Variation in pond depth over natural ranges had no direct effect on notonectid ability to capture fairy shrimp. Decreases in water clarity over natural ranges led to decreased notonectid ability to capture fairy shrimp. This corresponds with the observation that six weeks after the...
Authors
T. B. Graham
Monitoring data supports hunting closure Monitoring data supports hunting closure
No abstract available.
Authors
Russell Galipeau, K.J. Jenkins, B. Route
Accumulation and effects of lead and cadmium on wood ducks near a mining and smelting complex in Idaho Accumulation and effects of lead and cadmium on wood ducks near a mining and smelting complex in Idaho
A study of wood ducks (Aix sponsa) was conducted along the Coeur d'Alene River system in northern Idaho in 1986 and 1987. Most of this area has been subjected to severe contamination from lead and other metals from mining and smelting since the 1880s. In 1986, a preliminary study of wood duck nesting was conducted in the contaminated area; incubating hens captured in nest boxes were bled...
Authors
Lawrence J. Blus, Charles J. Henny, David J. Hoffman, Robert A. Grove
Roosevelt elk selection of temperate rain forest seral stages in western Washington Roosevelt elk selection of temperate rain forest seral stages in western Washington
We studied habitat selection by Roosevelt elk (Cervus elaphus roosevelti) in a temperate rain forest in the lower Queets River Valley of the western Olympic Peninsula, Washington from June 1986-July 1987. Elk annual home ranges included predominantly unlogged forests protected within Olympic National Park and logged, regenerating forests adjacent to the park. Radio-collared elk selected...
Authors
Greg L. Schroer, Kurt J. Jenkins, Bruce B. Moorhead
Seasonal use of conservation reserve program lands by white-tailed deer in east-central South Dakota Seasonal use of conservation reserve program lands by white-tailed deer in east-central South Dakota
The Conservation Reserve Program (CRP_, a provision of the 1985 Food Security Act, subsidizes landowners to take highly erodible lands out of cultivation and seed them to perennial cover for 10years. In eastern South Dakota, 0.5 million ha were enrolled in the CRP from 1985 to 1990 (Agric. Stabilization and Conserv. Serv., Brookings, S.D., unpubl. Data), which represents the largest...
Authors
Jeffrey H. Gould, Kurt J. Jenkins
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