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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 almost 1,000 books 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: 975
Native ranid frogs in California Native ranid frogs in California
Many recent declines and extinctions of native amphibians have occurred in certain parts of the world (Wake 1991; Wake and Morowitz 1991). All species of native true frogs have declined in the western United States over the past decade (Hayes and Jennings 1986). Most of these native amphibian declines can be directly attributed to habitat loss or modification, which is often exacerbated...
Authors
Mark R. Jennings
Necropsy results and concentrations of mercury, lead, arsenic, and selenium in emaciated loons from the coast of North Carolina in 1993 Necropsy results and concentrations of mercury, lead, arsenic, and selenium in emaciated loons from the coast of North Carolina in 1993
No abstract available.
Authors
J. C. Franson, T.P. Augspurger, K. A. Converse, P.R. Spitzer, E.A. Miller
Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
This report on the distribution, abundance, and health of our nation's biological resources is the first product of the National Biological Service’s Status and Trends Program. This information has many potential uses: it can document successful management efforts so resource managers will know what has worked well; it can identify problems so managers can take early action to restore...
The Summer Atlas of North American Birds The Summer Atlas of North American Birds
The North American Breeding Bird Survey comprises a network of regularly censussed, road-based survey routes and constitutes the most comprehensive set of data on the relative abundance and population trends of these birds during the summer months. Its value was highlighted in 1989, when the data were used to confirm suspected population declines in a number of species of neotropical...
Authors
J. Price, Sam Droege, A. Price
Use of gene marking to assess stocking success of red drum in Texas bays Use of gene marking to assess stocking success of red drum in Texas bays
No abstract available at this time.
Authors
R. Ward, T.L. King, I.R. Blandon, L.W. McEachron
Vanishing lands: Sea level, society and Chesapeake Bay Vanishing lands: Sea level, society and Chesapeake Bay
No abstract available at this time
Authors
S.P. Leatherman, R. Chalfont, E.C. Pendleton, T.L. McCandless, S. Funderburk
Advanced technologies for wilderness monitoring and management Advanced technologies for wilderness monitoring and management
No abstract available.
Authors
D. S. Ouren, J. Hummel, M. Eley, M. Sestak, A. Riebau
Biodiversity of the San Luis Valley Biodiversity of the San Luis Valley
No abstract available.
Authors
N. B. Kotliar
A spatial snow model for preday/prey interactions A spatial snow model for preday/prey interactions
No abstract available.
Authors
R. Ringleb, C. Martinka, D. Fagre, G. Liston, D. Potts, E. Willard
Bed material and numerical modeling in a gravel/cobble stream Bed material and numerical modeling in a gravel/cobble stream
No abstract available.
Authors
Robert T. Milhous, R. Dodge, P. Johnson
On habitat simulation in mountain rivers On habitat simulation in mountain rivers
No abstract available.
Authors
Robert T. Milhous