Book Chapters
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.
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: 6063
Secondary toxicity in raptors caused by white phosphorus
White phosphorus (WP) has caused waterfowl die-offs in a tidal saltmarsh used by the U.S. Army for artillery practice for > 40 years. Bald (Haliaeetus leucocephalus)and golden (Aquila chrysaetos) eagles have been observed feeding on dead and dying waterfowl on the marsh and may be exposed to WP through ingestion of contaminated birds. One carcass of each eagle species has been found with measura
Authors
D. W. Sparling
Seed germination patterns in fire prone Mediterranean climate regions,
No abstract available at this time
Authors
J. E. Keeley
Southeastern freshwater fishes
North America has the richest fauna of temperate freshwater fishes in the world, with about 800 native species in the waters of Canada and the United States. The center of this diversity is in the southeastern United States, where as many as 500 species may exist (62% of the continental fauna north of Mexico). Many coastal marine species also enter fresh waters of the Southeast, and at least 34 fo
Authors
Stephen J. Walsh, Noel M. Burkhead, James D. Williams
Soy protein in diets of rainbow trout: effects on growth, protein absorption, gastrointestinal histology and nonspecific serologic and immune response
No abstract available at this time
Authors
G. L. Rumsey, J.G. Endres, P.R. Bowser, K. A. Earnest-Koons, D. P. Anderson, A.K. Siwicki
Stable isotopes in mid-ocean ridge hydrothermal systems: Interactions between fluids, minerals, and organisms
Studies of abundance variations of light stable isotopes in nature have had a tremendous impact on all aspects of geochemistry since the development, in 1947, of a gas source isotope ratio mass spectrometer capable of measuring small variations in stable isotope ratios (Nice, 1947]. Stable isotope geochemistry is now a mature field, as witnessed by the proliferation of commercially available mass
Authors
Wayne C. Shanks, John K. Böhlke, Robert R. Seal
Statistical aspects of point count sampling
The dominant feature of point counts is that they do not census birds, but instead provide incomplete counts of individuals present within a survey plot. Considering a simple model for point count sampling, we demon-strate that use of these incomplete counts can bias estimators and testing procedures, leading to inappropriate conclusions. A large portion of the variability in point counts is cau
Authors
R. J. Barker, J.R. Sauer
Status and future of Lake Huron fish communities
In 1993, fishery management agencies with jurisdiction over Lake Huron fish populations developed draft fish community objectives in response to the Joint Strategic Plan for Management of Great Lakes Fisheries. The Joint Strategic Plan charged the Great Lakes Fishery Commission sponsored Lake Huron Committee to define objectives for what the fish community of Lake Huron should look like in the fu
Authors
M.P. Ebener, J.E. Johnson, D.M. Reid, N.P. Payne, R.L. Argyle, G.M. Wright, K. Krueger, J.P. Baker, T. Morse, J. Weise
Survival and growth of nursery-stock woody plants in constructed forested wetlands in central Maryland
No abstract available.
Authors
M. C. Perry, A.S. Deller, S.B. Pugh, M.E. Banker
The Altay falcon: Origin, morphology and distribution
The systematic position of the Altay falcon (Falco altaicus lorenzi) is perhaps the most enigmatic question lingering in falcon taxonomy. First reported to science in 1811, it has been treated as a race of the gyrfalcon (F. rusticolus), as a race of the saker (F. cherrug), as two separate species (F. lorenzi and F. altaicus), and as one to three color morphs of either the saker or the gyrfalcon.
Authors
D. H. Ellis