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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6158
The Willet (Catoptrophorus semipalmatus) The Willet (Catoptrophorus semipalmatus)
No abstract available.
Authors
P.M. Sanzenbacher, Susan M. Haig
Toxicological significance of soil ingestion by wild and domestic animals Toxicological significance of soil ingestion by wild and domestic animals
Most wild and domestic animals ingest some soil or sediment, and some species may routinely, or under special circumstances, ingest considerable amounts. Ingested soil supplies nutrients, exposes animals to parasites and pathogens, and may play a role in developing immune systems.1 Soil ingestion is also sometimes the principal route of exposure to various environmental contaminants.2-7...
Authors
W. Nelson Beyer, George F. Fries
Turquoise water, silver palms and fluorescent green Leiocephalus Turquoise water, silver palms and fluorescent green Leiocephalus
Abstract not supplied at this time
Authors
C.K. Dodd
UVR-induced injuries in freshwater vertebrates UVR-induced injuries in freshwater vertebrates
No abstract available.
Authors
Edward E. Little, David L. Fabacher
West Nile Virus vaccination and challenge in sandhill cranes (Grus canadensis) West Nile Virus vaccination and challenge in sandhill cranes (Grus canadensis)
No abstract available.
Authors
Glenn H. Olsen, Kimberli J.G. Miller, D. Docherty, L. Sileo
Western crevice and cavity-roosting bats Western crevice and cavity-roosting bats
Among the 45 species of bats that occur in the United States (U.S.), 34 species regularly occur in western regions of the country. Many of these “western” species choose roost sites in crevices or cavities. Herein we provide an introduction to the biology of bats that roost in cavities and crevices and assess the challenges and opportunities associated with monitoring their populations...
Authors
Michael A. Bogan, Paul M. Cryan, Ernest W. Valdez, Laura E. Ellison, Thomas J. O’Shea
White paper on post-fire effects, including physical and biological White paper on post-fire effects, including physical and biological
No abstract available at this time
Authors
M.L. Brooks, S.H. Cannon, N.B. Kotliar
White phosphorus at Eagle River Flats, Alaska: A case history of waterfowl mortality White phosphorus at Eagle River Flats, Alaska: A case history of waterfowl mortality
White phosphorus has a limited distribution in the environment because it only occurs where it has been directly used by humans. It is not transported aerially for any distance and, due to its density, has a limited ability to disperse through water. Therefore, it is not a contaminant of broad-scale concern. However, where it does occur, it can cause substantial mortality or critically...
Authors
Donald W. Sparling
Wildlife toxicology of organophosphorus and carbamate pesticides Wildlife toxicology of organophosphorus and carbamate pesticides
No abstract available.
Authors
Elwood F. Hill
Wolf population dynamics Wolf population dynamics
A large, dark wolf poked his nose out of the pines in Yellowstone National Park as he thrust a broad foot deep into the snow and plowed ahead. Soon a second animal appeared, then another, and a fourth. A few minutes later, a pack of thirteen lanky wolves had filed out of the pines and onto the open hillside. Wolf packs are the main social units of a wolf population. As numbers of wolves...
Authors
Todd K. Fuller, L. David Mech, Jean Fitts Cochrane
Wolf social ecology Wolf social ecology
The first real beginning to our understanding of wolf social ecology came from wolf 2204 on 23 May 1972. State depredation control trapper Lawrence Waino, of Duluth, Minnesota, had caught this female wolf 112 km (67 mi) south of where L. D. Mech had radio-collared her in the Superior National Forest 2 years earlier. A young lone wolf, nomadic over 100 km2 (40 mi2) during the 9 months...
Authors
L. David Mech, Luigi Boitani