Book Chapters
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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.
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 status and conservation of endemic Malagasy Chelonians: an historic perspective . The status and conservation of endemic Malagasy Chelonians: an historic perspective
No abstract available.
Authors
Miguel Pedrono, Augustin Sarovy, L. L. Smith, Roger Bour
A new national mosaic of state landcover data A new national mosaic of state landcover data
This presentation reviewed current landcover mapping efforts and presented a new preliminary, national mosaic of Gap Analysis Program (GAP) and Multi-Resolution Land Characteristics Consortium (MRLC) landcover data with a discussion of techniques, problems faced, and future refinements.
Authors
I. Thomas
A removal model for estimating detection probabilities from point-count surveys A removal model for estimating detection probabilities from point-count surveys
We adapted a removal model to estimate detection probability during point count surveys. The model assumes one factor influencing detection during point counts is the singing frequency of birds. This may be true for surveys recording forest songbirds when most detections are by sound. The model requires counts to be divided into several time intervals. We used time intervals of 2, 5, and...
Authors
G.L. Farnsworth, K. H. Pollock, J.D. Nichols, T.R. Simons, J.E. Hines, J.R. Sauer
Amphibian declines: Review of some current hypotheses Amphibian declines: Review of some current hypotheses
No abstract available.
Authors
P.S. Corn
Amphibians and reptiles of the Sierra de Alamos Amphibians and reptiles of the Sierra de Alamos
No abstract available at this time
Authors
C.R. Schwalbe, C.H. Lowe
An evaluation strategy for conservation goals of the Mississippi Alluvial Valley An evaluation strategy for conservation goals of the Mississippi Alluvial Valley
The population goals and habitat objectives established by the Mississippi Alluvial Valley Migratory Bird Initiative are based on several unverified assumptions. We have developed an evaluation strategy that identifies research needed to verify these assumptions. We also have outlined a monitoring strategy designed to track progress toward achieving habitat objectives and population...
Authors
D.J. Twedt, P.B. Hamel, R.J. Cooper, M.S. Woodrey
Analysis of survival, local and seasonal movements of the Rocky Mountain population of Sandhill Cranes Analysis of survival, local and seasonal movements of the Rocky Mountain population of Sandhill Cranes
No abstract available.
Authors
Rod C. Drewien, W. L. Kendall
Approaches for assessment of terrestrial vertebrate responses to contaminants: moving beyond individual organisms Approaches for assessment of terrestrial vertebrate responses to contaminants: moving beyond individual organisms
Conclusions: A need for a broader range ofinformation on effects of contaminants on individuals exists among the 4 classes of terrestrial vertebrates, especially mammals, reptiles, and amphibians. Separation of contaminant effects from other effects and reduction of speculative extrapolation within and among species requires information that can be produced only by combined field and...
Authors
P.H. Albers, G. H. Heinz, R.J. Hall
Aspects of amphibian anatomy and physiology Aspects of amphibian anatomy and physiology
No abstract available.
Authors
P.F.P. Henry
Assessing habitat selection in Spring by male American Woodcock in Maine with a geographic information system Assessing habitat selection in Spring by male American Woodcock in Maine with a geographic information system
Geographic information system (GIS) technology was used to identify habitats available to and used by male American woodcock (Scolopax minor) equipped with radio transmitters--54 in 1987, 51 in 1988, 46 in 1989 at Moosehorn National Wildlife Refuge, Maine. Woodcock were monitored from time of capture (25 March-15 April) to 15 June each year. To determine habitat selection by male...
Authors
K.E. Sprankle, G.F. Sepik, D.G. McAuley, J. R. Longcore
Avian toxicologic diagnosis Avian toxicologic diagnosis
This chapter describes the sources and pathophysiology of some potential poisons that affect birds and summarizes useful laboratory tests. The diagnosis of poisoning in birds, as in mammals, requires a complete and accurate history, careful observation of clinical signs, and a thorough necropsy evaluation. Appropriate sample handling and analysis, based on consultation with the...
Authors
C.J. Sigurdson, J. C. Franson