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: 6173
The captive environment and reintroduction: the black-footed ferret as a case study with comments on other taxa The captive environment and reintroduction: the black-footed ferret as a case study with comments on other taxa
No abstract available.
Authors
B. J. Miller, D. E. Biggins, Astrid Vargas, M. Hutchins, L. Hanebury, J. L. Godbey, Gerardo Ceballos, S. Anderson, J. L. Oldemeyer, F. L. Knopf
The North American Amphibian Monitoring Program. [abstract] The North American Amphibian Monitoring Program. [abstract]
The North American Amphibian Monitoring Program has been under development for the past three years. The monitoring strategy for NAAMP has five main prongs: terrestrial salamander surveys, calling surveys, aquatic surveys, western surveys, and atlassing. Of these five, calling surveys were selected as one of the first implementation priorities due to their friendliness to volunteers of...
Authors
J. Griffin
The Wisconsin Frog and Toad Survey: Update and 1984-97 trends [abstract] The Wisconsin Frog and Toad Survey: Update and 1984-97 trends [abstract]
The Wisconsin Frog and Toad Survey (WFTS) is a volunteer-based, roadside auditory count that began in 1981. It's protocols were recently modified for continent-wide use by the North American Amphibian Monitoring Plan (NAAMP). In 1997 we initiated a study to compare data collected by the WFTS and NAAMP protocols, in order to guide WFTS transition from its current methodology to one more...
Authors
M.J. Mossman, L. Hartman, J. Sauer, R. Hay, B. Dhuey
Translocated sea otter populations off the coasts of Oregon and Washington Translocated sea otter populations off the coasts of Oregon and Washington
The historical distribution of sea otters extended from the northern islands of Japan north and east across the Aleutian chain to the mainland of North America then south along the west coast to central Baja California, Mexico (Riedman and Estes 1990). By the beginning of the twentieth century, after 150 years of being intensively hunted for their valuable fur, sea otters had been...
Authors
Ronald J. Jameson
Trends in Appalachian bird populations, some speculative notes on the causes, and some thoughts on conservation directions for the region Trends in Appalachian bird populations, some speculative notes on the causes, and some thoughts on conservation directions for the region
No abstract available.
Authors
Sam Droege
Unbiasedness Unbiasedness
Unbiasedness is probably the best known criterion for evaluating the performance of estimators. This note describes unbiasedness, demonstrating various failings of the criterion. It is shown that unbiased estimators might not exist, or might not be unique; an example of a unique but clearly unacceptable unbiased estimator is given. It is shown that unbiased estimators are not translation
Authors
W.A. Link
Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies Use of geochemical mass balance modelling to evaluate the role of weathering in determining stream chemistry in five mid-Atlantic watersheds on different lithologies
No abstract available.
Authors
Anne K. O’Brien, Karen C. Rice, Owen P. Bricker, Margaret M. Kennedy, R. Todd Anderson
Waterfowl in the prairie pothole region Waterfowl in the prairie pothole region
The prairie pothole region of the northern Great Plains is one of the most important areas for duck reproduction in North America. The region produces, on average, 50% of the primary species of game ducks on the continent (Smith 1995), yet accounts for only 10% of the waterfowl breeding habitat in North America (Smith et al. 1964). Twelve of the 34 species of North American ducks are...
Authors
Jane E. Austin
Western snowy plovers and California least terns Western snowy plovers and California least terns
No abstract available.
Authors
A.N. Powell