Publications
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Amphibians of Olympic National Park Amphibians of Olympic National Park
Amphibians evolved from fishes about 360 million years ago and were the first vertebrates adapted to life on land. The word amphibian means "double life." It refers to the life history of many amphibians, which spend part of their life in water and part on land. There are three major groups of amphibians: salamanders, frogs, and toads, and caecilians. Salamanders, frogs, and toads can be...
Authors
Water Resources Division U.S. Geological Survey
Space use of killdeer at a Great Basin breeding area Space use of killdeer at a Great Basin breeding area
Wetland conservation efforts require knowledge of space use by a diversity of waterbirds. However, determining space use of animals requires intensive monitoring of individual organisms. Often, activity patterns during much of the annual cycle are neglected in analyses of home range and habitat use. From 1995-97, we monitored space use in a population of individually marked killdeer...
Authors
Jonathan H. Plissner, L.W. Oring, Susan M. Haig
Analytical group decision making in natural resources: Methodology and application Analytical group decision making in natural resources: Methodology and application
Group decision making is becoming increasingly important in natural resource management and associated scientific applications, because multiple values are treated coincidentally in time and space, multiple resource specialists are needed, and multiple stakeholders must be included in the decision process. Decades of social science research on decision making in groups have provided...
Authors
D. L. Schmoldt, D. L. Peterson
Species richness and abundance of ectomycorrhizal basidiomycete sporocarps on a moisture gradient in the Tsuga heterophylla zone Species richness and abundance of ectomycorrhizal basidiomycete sporocarps on a moisture gradient in the Tsuga heterophylla zone
Sporocarps of epigeous ectomycorrhizal fungi and vegetation data were collected from eight Tsuga heterophylla (Raf.) Sarg. - Pseudotsuga menziesii (Mirb.) Franco stands along a wet to dry gradient in Olympic National Park, Washington, U.S.A. One hundred and fifty species of ectomycorrhizal fungi were collected from a total sample area of 2.08 ha. Over 2 years, fungal species richness...
Authors
Thomas E. O’Dell, Joseph F. Ammirati, Edward G. Schreiner
Postbreeding movements of American Avocets and implications for wetland connectivity in the western Great Basin Postbreeding movements of American Avocets and implications for wetland connectivity in the western Great Basin
Wetlands in the western Great Basin of the United States are patchily distributed and undergo extensive seasonal and annual variation in water levels. The American Avocet (Recurvirostra americana) is one of many shorebird species that use these wetlands as breeding and migratory stopover sites and must adjust to variable conditions. We used radio telemetry to determine postbreeding...
Authors
Jonathan H. Plissner, Susan M. Haig, L.W. Oring
Day-roosts of female long-eared myotis in western Oregon Day-roosts of female long-eared myotis in western Oregon
Roosts are a critical habitat component for bats and may influence their survival and fitness. We used radiotelemetry to investigate characteristics of day-roosts of female long-eared myotis (Myotis evotis) in watersheds characterized by different forest conditions and the spatial relationships between day-roosts and available water. We tracked 21 bats to 73 roosts (n = 102 occasions)...
Authors
David L. Waldien, J. P. Hayes, Edward B. Arnett
Chlorophyll maxima in mountain ponds and lakes, Mount Rainier National Park, Washington State, USA Chlorophyll maxima in mountain ponds and lakes, Mount Rainier National Park, Washington State, USA
Hypolimnetic chlorophyll maxima are common in clear lakes and often occur at depths with between 1 and 0.1% of the surface incident light. Little is known, however, about the concentrations of chlorophyll in thermally unstratified mountain ponds and how these concentrations compare to epilimnetic and hypolimnetic concentrations in mountain lakes. The objectives of this study were to...
Authors
Gary L. Larson
Status of a broadly distributed endangered species: Results and implications of the second International Piping Plover Census Status of a broadly distributed endangered species: Results and implications of the second International Piping Plover Census
Methods for monitoring progress toward recovery goals are highly variable and may be problematic for endangered species that are mobile and widely distributed. Recovery objectives for Piping Plovers (Charadrius melodus) include attainment of minimum population sizes within specified recovery units, as determined by two U.S. and two Canadian recovery teams. To assess progress toward these...
Authors
Jonathan H. Plissner, Susan M. Haig
Abundance, behavior and mortality of Buteo swainsoni near San Francisco, Cordoba, Argentina in 1997 Abundance, behavior and mortality of Buteo swainsoni near San Francisco, Cordoba, Argentina in 1997
No abstract available.
Authors
Michael I. Goldstein, Marc J. Bechard, Melissa L. Parker, Michael N. Kochert, Agustin E. Lanusse
Growth and demographics of a population of Emydoidea blandingii from western Nebraska Growth and demographics of a population of Emydoidea blandingii from western Nebraska
No abstract available.
Authors
David J. Germano, R. Bruce Bury