Publications
Filter Total Items: 2088
Requiem for a sagebrush ecosystem? Requiem for a sagebrush ecosystem?
No abstract available.
Authors
Steven T. Knick
Discovery of Cnemidophorus neomexicanus in Arizona Discovery of Cnemidophorus neomexicanus in Arizona
The parthenogenetic whiptail lizard Cnemidophorus neomexicanus is known primarily from the vicinity of the Rio Grande Valley from Espanola, Rio Arriba Co., New Mexico south to near Candelaria, Presidio Co., Texas, and extending westward in southwestern New Mexico to west of Lordsburg, Hidalgo Co. (Fig. 1; Axtell 1966; Cole et al. 1988; Cordes et al. 1989; Degenhardt et al. 1996; Pough...
Authors
Trevor Persons, John W. Wright
A historical perspective and critique of the declining amphibian crisis A historical perspective and critique of the declining amphibian crisis
Losses of amphibian species and populations are of global concern (Blaustein and Wake 1990, Wyman 1990, Wake 1991, Vial and Saylor 1993, Blaustein 1994) and have been the focus of an increasing number of studies. Still, neither all regions nor all species have declines (Dodd 1997; Green 197; Corn, in press). There also is wide variation in abundance of many species over different years...
Authors
R. Bruce Bury
Defining landscapes suitable for restoration of grizzly bears Ursus arctos in Idaho Defining landscapes suitable for restoration of grizzly bears Ursus arctos in Idaho
Informed management of large carnivores depends on the timely and useful presentation of relevant information. We describe an approach to evaluating carnivore habitat that uses pre-existing qualitative and quantitative information on humans and carnivores to generate coarse-scale maps of habitat suitability, habitat productivity, potential reserves, and areas of potential conflict. We...
Authors
Troy Merrill, D.J. Mattson, R.G. Wright, Howard B. Quigley
Diving and foraging patterns of Marbled Murrelets (Brachyramphus marmoratus): Testing predictions from optimal-breathing models Diving and foraging patterns of Marbled Murrelets (Brachyramphus marmoratus): Testing predictions from optimal-breathing models
The diving behavior of Marbled Murrelets (Brachyramphus marmoratus) was studied using telemetry along the Oregon coast during the 1995 and 1996 breeding seasons and examined in relation to predictions from optimal-breathing models. Duration of dives, pauses, dive bouts, time spent under water during dive bouts, and nondiving intervals between successive dive bouts were recorded. Most...
Authors
Patrick G.R. Jodice, Michael W. Collopy
Persistence of high lead concentrations and associated effects in Tundra Swans captured near a mining and smelting complex in northern Idaho Persistence of high lead concentrations and associated effects in Tundra Swans captured near a mining and smelting complex in northern Idaho
Lead poisoning of waterfowl, particularly tundra swans (Cygnus columbianus), has been documented in the Coeur d'Alene River Basin in northern Idaho for nearly a century. Over 90% of the lead-poisoned tundra swans in this area that were necropsied have no ingested lead shot. Spent lead shot from hunting activities over the years is therefore a minor source of lead in these swans. The...
Authors
L. J. Blus, Charles J. Henny, D. J. Hoffman, L. Sileo, D. J. Audet
Sodium cyanide hazards to fish and other wildlife from gold mining operations Sodium cyanide hazards to fish and other wildlife from gold mining operations
Highly toxic sodium cyanide (NaCN) is used increasingly by the international mining community to extract gold and other precious metals through milling of high grade ores and heap leaching of low grade ores. Of the 98 million kg cyanide (CN) consumed in North America in 1989, about 80% was used in gold mining (Knudson 1990). In Canada, more than 90% of the mined gold is extracted from...
Authors
R. Eisler, D. R. Clark, Stanley N. Wiemeyer, Charles J. Henny
Historical land cover changes in the Great Lakes Region Historical land cover changes in the Great Lakes Region
Two different methods of reconstructing historical vegetation change, drawing on General Land Office (GLO) surveys and fossil pollen deposits, are demonstrated by using data from the Great Lakes region. Both types of data are incorporated into landscape-scale analyses and presented through geographic information systems. Results from the two methods reinforce each other and allow...
Authors
K.L. Cole, M.B. Davis, F. Stearns, G. Guntenspergen, K. Walker
Organochlorine pesticides, PCBs, and mercury in Osprey (Pandion haliaetus) eggs from the Upper Volga River, Russia Organochlorine pesticides, PCBs, and mercury in Osprey (Pandion haliaetus) eggs from the Upper Volga River, Russia
No abstract available
Authors
Charles J. Henny, V.M. Galushin, A.V. Kuznetsov
Highway to the tropics: Using satellite telemetry and the Internet to track ospreys in the Western Hemisphere Highway to the tropics: Using satellite telemetry and the Internet to track ospreys in the Western Hemisphere
No abstract available.
Authors
M.S. Martell, M.J. Kennedy, Charles J. Henny, P. Nye
Eastern Bluebird (Sialia sialis) Eastern Bluebird (Sialia sialis)
No abstract available
Authors
P.A. Gowaty, J.H. Plissner