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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.
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: 6197
Canvasback Aythya valisineria Canvasback Aythya valisineria
No abstract available.
Authors
G.M. Haramis
Chemicals for worldwide aquaculture Chemicals for worldwide aquaculture
Regulations and therapeutants or other safe chemicals that are approved or acceptable for use in the aquaculture industry in the US, Canada, Europe and Japan are presented, discussing also compounds that are unacceptable for aquaculture. Chemical use practices that could affect public health are considered and details given regarding efforts to increase the number of registered and...
Authors
R. A. Schnick
Colonial wading birds: herons and egrets Colonial wading birds: herons and egrets
No abstract available.
Authors
R.M. Erwin, J. A. Spendelow
Compendium of crane behavior. Part 1: Individual (nonsocial) behavior Compendium of crane behavior. Part 1: Individual (nonsocial) behavior
This paper provides the organizational framework, nomenclature, and abbreviated descriptions for all conspicuous nonsocial behavioral units for all 15 species of crane. We present eight generalized functional classes of behavior. These classes include about 90 discrete motor patterns that constitute the nonsocial repertoire of all cranes. We present this compendium to facilitate...
Authors
D. H. Ellis, George W. Archibald, S.R. Swengel, C. B. Kepler
Contaminants in drainage water and avian risk thresholds Contaminants in drainage water and avian risk thresholds
No abstract available.
Authors
J. P. Skorupa, H. M. Ohlendorf
Contaminants in the coastal environment Contaminants in the coastal environment
No abstract available.
Authors
P.H. Albers
Cryopreservation of crane semen Cryopreservation of crane semen
The method for the cryopreservation of crane semen at Patuxent Wildlife Research Center is described in detail. Cryopreservation is useful for the long-term storage of crane semen and for specialized propagation needs. A 50% fertility rate from most sandhill cranes, Grus canadensis, inseminated with frozen-thawed semen can be expected. Additional research should improve the fertility...
Authors
G.F. Gee
Demography of eastern population tundra swans, Cygnus columbianus columbianus Demography of eastern population tundra swans, Cygnus columbianus columbianus
No abstract available.
Authors
J. Bart, R. Limpert, S. Earnst, W. Sladen, J.E. Hines, T. Rothe
Ecological impacts of nature-dependent tourism Ecological impacts of nature-dependent tourism
No abstract available.
Authors
J. L. Marion
Effects of contaminants on birds Effects of contaminants on birds
No abstract available.
Authors
G. H. Heinz, Stanley N. Wiemeyer
Effects of environmental contaminants on raptors in the Midwest Effects of environmental contaminants on raptors in the Midwest
No abstract available.
Authors
Stanley N. Wiemeyer