Publications
Filter Total Items: 1994
Herpetofauna survey of Petrified Forest National Park, Arizona
No abstract available.
Authors
C.A. Drost, Trevor Persons, E.M. Nowak
Factors influencing production systems of the Mongolian Steppe: Potential global change on semi-arid ecosystems
No abstract available.
Authors
D. Ojima, Larry L. Tieszen, T. Chuluun, Jayne Belnap, J. E. Dodd, Z. Chen
Ecosystem sustainability and condition
No abstract available.
Authors
C.Ronald Carroll, Jayne Belnap, Gary K. Meffe
Effects of wildfires and military training on raptors
No abstract available.
Authors
K. Steenhof, Michael N. Kochert, L.B. Carpenter, R.N. Lehman, J.M. Marzluff
Developing an NSDI and NBII clearinghouse node for the Olympic Peninsula, Washington State
No abstract available.
Authors
Robert Norheim, D. L. Peterson, N.R. Chrisman, T.Z. Alcock, Edward G. Schreiner
Biological soil crusts of Mongolia- Impacts of grazing and precipitation on nitrogen inputs
No abstract available.
Authors
Jayne Belnap, D. Ojima, N.N. Barger
Air pollution effects on growth of ponderosa pine, jeffrey pine, and bigcone douglas-fir
No abstract available.
Authors
M. Arbaugh, D. L. Peterson, P.R. Miller
Demography of the Yellowstone grizzly bears
We undertook a demographic analysis of the Yellowstone grizzly bears (Ursus arctos) to identify critical environmental factors controlling grizzly bear vital rates, and thereby to help evaluate the effectiveness of past management and to identify future conservation issues. We concluded that, within the limits of uncertainty implied by the available data and our methods of data analysis, the size
Authors
C. M. Pease, David J. Mattson
Multiscale thermal refugia and stream habitat associations of chinook salmon in northwestern Oregon
We quantified distribution and behavior of adult spring chinook salmon (Oncorhynchus tshawytscha) related to patterns of stream temperature and physical habitat at channel-unit, reach-, and section-level spatial scales in a wilderness stream and a disturbed stream in the John Day River basin in northeastern Oregon. We investigated the effectiveness of thermal remote sensing for analyzing spatial p
Authors
Christian E. Torgersen, David M. Price, Hiram W. Li, B.A. McIntosh
Breeding bird responses to three silvicultural treatments in the Oregon Coast Range
Silvicultural alternatives to clear-cutting have been suggested to promote development, retention, or creation of late-successional features such as large trees, multilayered canopies, snags, and logs. We assessed bird response to three silvicultural alternatives to clear-cutting that retained structural features found in old Douglas-fir (Pseudotsuga menziesii) forests and that imitated natural di
Authors
C. L. Chambers, William C. McComb, John C. Tappeiner
A GIS modeling method applied to predicting forest songbird habitat
We have developed an approach for using “presence” data to construct habitat models. Presence data are those that indicate locations where the target organism is observed to occur, but that cannot be used to define locations where the organism does not occur. Surveys of highly mobile vertebrates often yield these kinds of data. Models developed through our approach yield predictions of the amount
Authors
Randy Dettmers, Jonathan Bart
Fire, red squirrels, whitebark pine, and Yellowstone grizzly bears
Whitebark pine (Pinus albicaulis) habitats are important to Yellowstone grizzly bears (Ursus arctos) as refugia and sources of food. Ecological relationships between whitebark pine, red squirrels (Tamiasciurus hudsonicus), and grizzly bear use of pine seeds on Mt. Washburn in Yellowstone National Park, Wyoming, were examined during 1984-86. Following large-scale fires in 1988, we repeated the stud
Authors
Shannon Podruzny, Daniel P. Reinhart, David J. Mattson