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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.
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Snow Mountain Wilderness Study Area, California Snow Mountain Wilderness Study Area, California
The Snow Mountain Wilderness study area, located about 120 mi north of San Francisco and on the divide between the Sacramento and Eel Rivers, contains some of the highest terrain in the Coast Ranges. Its mineral-resource potential was evaluated by interpreting data from geologic field studies, from an aeromagnetic survey, from geochemical sampling of stream sediments, rocks, and springs...
Authors
Robert D. Brown, Francis E. Federspiel
A computerized biotelemetry receiving and datalogging system A computerized biotelemetry receiving and datalogging system
No abstract available.
Authors
P.W. Howey, D.R. Witlock, M.R. Fuller, W.S. Seegar, F.P. Ward
Alternative diagenetic models for cretaceous talus deposits, Deep Sea Drilling Project Site 536, Gulf of Mexico Alternative diagenetic models for cretaceous talus deposits, Deep Sea Drilling Project Site 536, Gulf of Mexico
Talus deposits recovered from Site 536 show evidence of aragonite dissolution, secondary porosity development, and calcite cementation. Although freshwater diagenesis could account for the petrographic features of the altered talus deposits, it does not uniquely account for isotopic or trace-element characteristics. Also, the hydrologic setting required for freshwater alteration is not...
Authors
Robert B. Halley, B. J. Pierson, Wolfgang Schlager
Amino acid requirements in fish Amino acid requirements in fish
No abstract available at this time
Authors
G. L. Rumsey
An aerial photo-census of Chesapeake Bay and North Carolina canvasbacks An aerial photo-census of Chesapeake Bay and North Carolina canvasbacks
No abstract available.
Authors
G.M. Haramis, J.R. Goldsberry
An introduction to statistical and ecological software An introduction to statistical and ecological software
No abstract available.
Authors
Gary L. Hensler
Aquatic habitats--waterfowl Aquatic habitats--waterfowl
No abstract available.
Authors
J. T. Lokemoen, F.B. Lee, Harold F. Duebbert, G.A. Swanson
Are anuran amphibians heavy metal accumulators? Are anuran amphibians heavy metal accumulators?
No abstract available.
Authors
R.J. Hall, B.M. Mulhern
Assessing the tolerance of fish and fish populations to environmental stress: The problems and methods of monitoring Assessing the tolerance of fish and fish populations to environmental stress: The problems and methods of monitoring
Environmental stress is an inescapable aspect of life in the aquatic environment. The chemical and physical demands of life underwater impose somewhat rigorous constraints on aquatic species (Smith, 1982a). Superimposed on such demands may be the additional. physiological constraints of particular ecological niches. It is true that aquatic species are adapted to these conditions, but...
Authors
Gary Wedemeyer, D. McLeay, C.P. Goodyear
Biochemical indicators of stress in fishes: An overview Biochemical indicators of stress in fishes: An overview
No abstract available.
Authors
Dora R. M. Passino
Colonial bird monitoring: A strategy for regional and national evaluation Colonial bird monitoring: A strategy for regional and national evaluation
No abstract available.
Authors
R.M. Erwin, P.H. Geissler, M.L. Shaffer, D.A. McCrimmon
Conservation of nearctic shorebirds Conservation of nearctic shorebirds
No abstract available.
Authors
S.E. Senner, M.A. Howe