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Science Quality and Integrity

The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.

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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: 6063

The Cordilleran ice sheet in Alaska

No abstract available.
Authors
T. D. Hamilton, R.M. Thorson

The Late Wisconsin glacial record of the Laurentide ice sheet in the United States

No abstract available.
Authors
D.M. Mickelson, Lee Clayton, David S. Fullerton, H.W. Borns
By
Geosciences and Environmental Change Science Center

Possible relationships between trichinellosis and abnormal behavior in bears

Data compiled from parasite studies of grizzly bears (Ursus arctos) and black bears (U. americanus) in the Yellowstone and Glacier National Park populations and surrounding areas of Montana and Wyoming during 1969-79 are reviewed with reference to the possible influence of infection with the muscleworm Trichinella sp. on bear behavior. In grizzly bears, the high prevalence of this parasite (61% of
Authors
David E. Worley, Kenneth R. Greer, Daniel A. Palmisciano
By
Ecosystems Mission Area, Northern Rocky Mountain Science Center

Instream flow values as a factor in water management

No abstract available.
Authors
Robert T. Milhous

The influence of aquatic humic substance properties on trihalomethane potential

No abstract available. 
Authors
B.G. Oliver, E.M. Thurman
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

Structural study of humic substances: New approaches and methods

No abstract available. 
Authors
E.M. Thurman, R.L. Malcom
By
Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

[Sixty-five species accounts]

No abstract available.
Authors
P.W. Sykes
By
Ecosystems Mission Area, Eastern Ecological Science Center

A supplementary bibliography of the vultures

No abstract available.
Authors
S.R. Wilbur
By
Ecosystems Mission Area, Eastern Ecological Science Center

Avian artificial insemination and semen preservation

Summary: Artificial insemination is a practical propagation tool that has been successful with a variety of birds. Cooperative, massage, and electroejaculation and modifications of these three basic methods of semen collection are described for a variety of birds. Semen color and consistency and sperm number, moti!ity, and morphology, as discussed, are useful indicators of semen quality, but the
Authors
G.F. Gee
By
Ecosystems Mission Area, Eastern Ecological Science Center

Biology and properties of fish and reptilian herpesviruses

No abstract available at this time
Authors
K. Wolf
By
Ecosystems Mission Area, Eastern Ecological Science Center

Breeding ecology of North American shorebirds: Patterns and constraints

No abstract available.
Authors
M.A. Howe
By
Ecosystems Mission Area, Eastern Ecological Science Center

Burro-small vertebrate interactions in Death Valley National Monument, California

No abstract available at this time
Authors
M. Yancey, C. L. Douglas
By
Ecosystems Mission Area, Western Ecological Research Center (WERC)