Publications
Filter Total Items: 1990
Ecological scale: Theory and applications
No abstract available.
Assessment of air quality and air pollutant impacts in national parks of the Rocky Mountains and northern Great Plains
No abstract available.
Authors
David L. Peterson, T.J. Sullivan, J.M. Eilers, S. Brace, D. Horner
Organochlorine pesticides, PCBs, and mercury in Osprey (Pandion haliaetus) eggs from the Upper Volga River, Russia
The Osprey population associated with Darwin Nature Reserve and the Rybinsk Reservoir increased from only a few pairs prior to the creation of the reservoir in the late 1940s , to about 45-50 pairs in 1994. Productivity rates were excellent in 1988 and 1989 (1.38 young/occupied nest), but extremely low in 1987 (0.47 young/occupied nest). A chemical spill into the Volga River in early 1987 resulted
Authors
Charles J. Henny, V.M. Galushin, A.V. Kuznetsov
Eolian dust on the Colorado Plateau: Magnetic and geochemical evidence from sediment in potholes and biologic soil crust
No abstract available.
Authors
R. Reynolds, Jayne Belnap, M. Reheis, Nilah Mazza
Wetland connectivity and waterbird conservation in the western Great Basin of the United States: Introduction to workshop
As scientists, managers and landowners, we have come to realize that to best understand the local and regional value of individual wetlands, we need to take a broad geographic, taxonomic, and management view. In December 1994, a symposium was held in Reno, Nevada that addressed this topic for shorebirds by bringing together researchers and managers from the Western Great Basin to discuss shorebird
Authors
Susan M. Haig, Lewis W. Oring
An enthusiast's guide to agrostology
Book review of: Population Biology of Grasses, edited by G.P. Cheplick; Cambridge University Press, 1998. £50.00/$85.00 hbk (xii +399 pages) ISBN 0 521 57205 3
Authors
David A. Pyke
Influence of habitat, sex, age, and drought on the diet of Townsend's ground squirrels
We assayed diets of Townsend's ground squirrels (Spermophilus townsendii) in a semi-arid shrub steppe in Idaho by analyzing 1,432 fecal samples during 1991–1994. Dietary composition differed between adults and juveniles but not between males and females. Sand-berg's bluegrass (Poa secunda), a perennial bunchgrass, was the most common item in diets. Diets varied among habitats that differed in plan
Authors
Beatrice Van Horne, Robert L. Schooley, Peter B. Sharpe
Diet and morphology of extant and recently extinct northern bears
I examined the relationship of diets to skull morphology of extant northern bears and used this information to speculate on diets of the recently extinct cave (Ursus spelaeus) and short-faced (Arctodus simus) bears. Analyses relied upon published skull measurements and food habits of Asiatic (U. thibetanus) and American (U. americanus) black bears, polar bears (U. maritimus), various subspecies of
Authors
David J. Mattson
Changes in mortality of Yellowstone's grizzly bears
Records of grizzly bear (Ursus arctos) deaths are currently used by managers to indicate trends in actual grizzly bear mortality and to judge the effectiveness of management. Two assumptions underlie these current uses: first, that recorded mortality is an unbiased indicator of actual mortality, and second, that changes in mortality after implementation of management strategies are sufficient grou
Authors
David J. Mattson
Book Review: Preserving nature in the national parks - A history
No abstract available.
Authors
D. L. Peterson