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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
Habitat management for wintering American Woodcock in the southeastern United States Habitat management for wintering American Woodcock in the southeastern United States
Although much information has been gathered on American woodcock (Scolopax minor) wintering east of the Lower Mississippi Alluvial Valley, that information has not been compiled into a single source assembled for land managers. The objectives of this paper are to pose a few important questions that should be addressed before implementing a land management plan and to briefly review some...
Authors
D.G. Krementz
Heron feeding habitat conservation Heron feeding habitat conservation
No abstract available.
Authors
J.A. Kushlan
Herons as indicators Herons as indicators
Abstract not submitted to date
Authors
R.M. Erwin, T. W. Custer
Herons in North America, Central America and the West Indies Herons in North America, Central America and the West Indies
No abstract available.
Authors
Robert W. Butler, J.A. Kushlan, I.J. Davidson
Herpetofauna of the Beni Biological Station Biosphere Reserve, Amazonian Bolivia: Additional information, and current knowledge in context Herpetofauna of the Beni Biological Station Biosphere Reserve, Amazonian Bolivia: Additional information, and current knowledge in context
Previous collections in the Departamento del Beni in tropical Bolivia only hinted at high levels of herpetological biodiversity (Fugler 1986, 1988; de la Riva 1990a; Fugler and de la Riva 1990). Fieldwork (totaling 48 days) in July-August 1988 and September 1987 (dry seasons) and November-December 1990 (wet season) has resulted in collection and identification of 401 amphibian and...
Authors
G. Middendorf, R. Reynolds
Host selection in the forest interior: cowbirds target ground-nesting species Host selection in the forest interior: cowbirds target ground-nesting species
We investigated patterns of cowbird host selection in a large (1300 ha), unfragmented forest in eastern New York in 1992-3 to determine whether cowbird parasitism rates can be attributed to species-specific traits or to other features associated with nest sites. Nest height was significantly associated with parasitism (P = 0.003) in this community of 23 species (n = 430 nests, 23%...
Authors
D.C. Hahn, Jeff S. Hatfield
Impacts of cowbird parasitism on wood thrushes and other neotropical migrants in suburban Maryland forests Impacts of cowbird parasitism on wood thrushes and other neotropical migrants in suburban Maryland forests
During 1988-1993, we monitored nests of neotropical migrant birds in seven suburban Maryland forests to compare parasitism and predation rates in forests of different areas. Of 1,122 nests monitored, 672 were of Wood Thrush, the most commonly found nesting species. Study sites were forests that ranged in size from 21 ha to more than 1,300 ha in the Piedmont and Coastal Plain regions of...
Authors
B.A. Dowell, J.E. Fallon, C.S. Robbins, D.K. Dawson, F.W. Fallon
Influence of salinity, bottom topography, and tides on locations of estuarine turbidity maxima in northern San Francisco Bay Influence of salinity, bottom topography, and tides on locations of estuarine turbidity maxima in northern San Francisco Bay
Time series of salinity and suspended-solids concentration measured at four locations and vertical profiles of salinity and suspended-solids concentration measured during 48 water-quality cruises from January 1993 to September 1997 are analyzed to describe the influence of salinity, bottom topography, and tides on locations of estuarine turbidity maxima in northern San Francisco Bay...
Authors
David H. Schoellhamer
Integrating chemical, water quality, habitat, and fish assemblage data from the San Joaquin River drainage, California Integrating chemical, water quality, habitat, and fish assemblage data from the San Joaquin River drainage, California
No abstract available.
Authors
Larry R. Brown, Charles R. Kratzer, Neil M. Dubrovsky