Book Chapters
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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: 6198
Reconstruction of Anacostia wetlands: success? Reconstruction of Anacostia wetlands: success?
Historically, the tidal Anacostia River in Washington, D.C. had been an extensive system of freshwater tidal marshes replete with a full array of wetland vegetation dominated by wild rice. The local Nacochtank Indians had found the abundant fish and wildlife sufficient to sustain their daily lives. White man's intrusion upon the landscape gradually brought about deterioration of the...
Authors
R.S. Hammerschlag
Series forward Series forward
No abstract available.
Authors
J.M. Weeks, S. O’Hare, Barnett A. Rattner
Sources, fate, and effects of PAHs in shallow water environments: a review with special reference to small watercraft Sources, fate, and effects of PAHs in shallow water environments: a review with special reference to small watercraft
Polycyclic aromatic hydrocarbons (PAHs) are aromatic hydrocarbons with two to seven fused carbon (benzene) rings that can have substituted groups attached. Shallow coastal, estuarine, lake, and river environments receive PAHs from treated wastewater, stormwater runoff, petroleum spills and natural seeps, recreational and commercial boats, natural fires, volcanoes, and atmospheric...
Authors
P.H. Albers
Statistical concepts: Assessing spatial distributions Statistical concepts: Assessing spatial distributions
Contents: -- Presence-absence surveys -- Mapping the spatial distribution -- Looking ahead -- References
Authors
J.D. Nichols, K. U. Karanth
Statistical concepts: Estimating absolute densities of tigers using capture-recapture sampling Statistical concepts: Estimating absolute densities of tigers using capture-recapture sampling
Contents: -- Introduction -- Photo trapping tigers -- Capture-recapture models -- Survey design considerations -- Conclusion -- References
Authors
J.D. Nichols, K. U. Karanth
Statistical concepts: Indices of relative abundance Statistical concepts: Indices of relative abundance
Contents: -- Kinds of indices -- Reducing bias in index-based estimates -- Robust estimation of relative abundance -- Summary comments on indices and estimation -- References
Authors
J.D. Nichols, K. U. Karanth
Statistical mapping of count survey data Statistical mapping of count survey data
We apply a Poisson mixed model to the problem of mapping (or predicting) bird relative abundance from counts collected from the North American Breeding Bird Survey (BBS). The model expresses the logarithm of the Poisson mean as a sum of a fixed term (which may depend on habitat variables) and a random effect which accounts for remaining unexplained variation. The random effect is assumed...
Authors
J. Andrew Royle, W.A. Link, J.R. Sauer
Structural-group quantitation by CP/MAS 13C NMR measurements of dissolved organic matter from natural waters Structural-group quantitation by CP/MAS 13C NMR measurements of dissolved organic matter from natural waters
No abstract available.
Authors
R.L. Wershaw, George R. Aiken, J. A. Leenheer, J. Tregellas
Supplemental planting of early successional tree species during bottomland hardwood afforestation Supplemental planting of early successional tree species during bottomland hardwood afforestation
Reforestation of former bottom land hardwood forests that have been cleared for agriculture (i.e., afforestation) has historically emphasized planting heavy-seeded oaks (Quercus spp.) and pecans (Carya spp.). These species are slow to develop vertical forest structure. However, vertical forest structure is key to colonization of afforested sites by forest birds. Although early...
Authors
D.J. Twedt, R.R. Wilson
Teaching migration routes to canada geese and trumpeter swans using ultralight aircraft, 1990-2001 Teaching migration routes to canada geese and trumpeter swans using ultralight aircraft, 1990-2001
This paper summarizes eleven years (1990-2001) of experiments to teach Canada Geese (Branta canadensis) and Trumpeter Swans (Cygnus buccinator) pre-selected migration routes using ultralight aircraft. When Canada Geese were trained to follow an ultralight aircraft for southward autumn migrations of 680 or 1,320 km, 81% (83/103) returned on their own in the next spring to near their place...
Authors
William J.L. Sladen, William A. Lishman, D. H. Ellis, G.G. Shire, D.L. Rininger