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.
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Thermal infrared remote sensing of water temperature in riverine landscapes
Water temperature in riverine landscapes is an important regional indicator of water quality that is influenced by both ground- and surface-water inputs, and indirectly by land use in the surrounding watershed (Brown and Krygier, 1970; Beschta et al., 1987; Chen et al., 1998; Poole and Berman, 2001).Coldwater fishes such as salmon and trout are sensitive to elevated water temperature; therefore, w
Authors
Rebecca N. Handcock, Christian E. Torgersen, Keith A. Cherkauer, Alan R. Gillespie, Tockner Klement, Russell N. Faux, Jing Tan
Time-to-event analysis as a framework for quantifying fish passage performance
No abstract available.
Authors
Theodore Castro-Santos, Russell W. Perry
Use of Dry Tortugas National Park by threatened and endangered marine turtles
Dry Tortugas National Park (DRTO) harbors several key benthic habitats that are important for marine turtles. Threatened loggerhead turtles (Caretta caretta) forage in hard-bottom areas on spiny lobsters and crabs; endangered hawksbill turtles (Eretmochelys imbricata) forage on reefs and consume sponges; and endangered green turtles (Chelonia mydas) graze on seagrasses and marine algae. The sandy
Authors
Kristin M. Hart, Ikuko Fujisaki, Autumn R. Sartain
Using mark-recapture models to estimate survival from telemetry data
No abstract available.
Authors
Theodore Castro-Santos, Christopher M. Holbrook, Benjamin P. Sandford, Russell W. Perry
Variance components estimation for continuous and discrete data, with emphasis on cross-classified sampling designs
Variance components may play multiple roles (cf. Cox and Solomon 2003). First, magnitudes and relative magnitudes of the variances of random factors may have important scientific and management value in their own right. For example, variation in levels of invasive vegetation among and within lakes may suggest causal agents that operate at both spatial scales – a finding that may be important for s
Authors
Brian R. Gray
Viral hemorrhagic septicemia
Viral hemorrhagic septicemia (VHS) is one of the most important viral diseases of finfish worldwide. In the past, VHS was thought to affect mainly rainbow trout Oncorhynchus mykiss reared at freshwater facilities in Western Europe where it was known by various names including Egtved disease and infectious kidney swelling and liver degeneration (Wolf 1988). Today, VHS is known as an important sourc
Authors
William N. Batts, James R. Winton
Volcanoes: observations and impact
Volcanoes are critical geologic hazards that challenge our ability to make long-term forecasts of their eruptive behaviors. They also have direct and indirect impacts on human lives and society. As is the case with many geologic phenomena, the time scales over which volcanoes evolve greatly exceed that of a human lifetime. On the other hand, the time scale over which a volcano can move from inacti
Authors
Clifford Thurber, Stephanie G. Prejean
Wetlands of the Central Valley of California and Klamath Basin
No abstract available.
Authors
Joseph P. Fleskes
Wildlife forestry
Wildlife forestry is management of forest resources, within sites and across landscapes, to provide sustainable, desirable habitat conditions for all forest-dependent (silvicolous) fauna while concurrently yielding economically viable, quality timber products. In practice, however, management decisions associated with wildlife forestry often reflect a desire to provide suitable habitat for rare sp
Authors
Daniel J. Twedt
Wildlife toxicology: environmental contaminants and their national and international regulation
No abstract available.
Authors
K. Christiana Grim, Anne Fairbrother, Barnett A. Rattner
Status of rainbow smelt in the U.S. waters of Lake Ontario, 2011
Rainbow smelt Osmerus mordax are the second most abundant pelagic prey fish in Lake Ontario. The abundance and weight indices for Lake Ontario age-1 and older rainbow smelt declined in 201l and represented a 64% and 54% decrease respectively from 2010 levels. Length frequency-based age analysis indicated that age-1 rainbow smelt constituted 44% of the estimated population however age 1 abundance w