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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.
Filter Total Items: 6158
Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska Field guide to the Mesozoic accretionary complex along Turnagain Arm and Kachemak Bay, south-central Alaska
Turnagain Arm, just east of Anchorage, provides a readily accessible, world-class cross section through a Mesozoic accretionary wedge. Nearly continuous exposures along the Seward Highway, the Alaska Railroad, and the shoreline of Turnagain Arm display the two main constituent units of the Chugach terrane: the McHugh Complex and Valdez Group. In this paper we describe seven bedrock...
Authors
Dwight Bradley, Timothy M. Kusky, Susan M. Karl, Peter J. Haeussler
Genetic variation among wild lake trout populations: the 'wanted' and the 'unwanted' Genetic variation among wild lake trout populations: the 'wanted' and the 'unwanted'
In this study we examine genetic variation within and among self-sustaining lake trout populations from the Great Lakes basin, the Rainy Lake basin, and Yellowstone Lake. We used RFLP analysis and direct sequencing to examine DNA sequence variation among several mitochondrial and nuclear genes, including highly conserved loci (e.g. cytochrome b, nuclear exon regions) and highly variable...
Authors
Mary K. Burnham-Curtis, Larry W. Kallemeyn, Charles R. Bronte
Growth and fledgling of roseate terns in exceptionally 'good' and 'poor' years of overall productivity Growth and fledgling of roseate terns in exceptionally 'good' and 'poor' years of overall productivity
No abstract available.
Authors
J. A. Spendelow, James M. Zingo, D. A. Shealer, G.W. Pendleton
Impacts of trapping adult roseate terns on their reproductive success Impacts of trapping adult roseate terns on their reproductive success
No abstract available.
Authors
James M. Zingo, R. Field, J. A. Spendelow
Imperiled amphibians: A historical perspective Imperiled amphibians: A historical perspective
Abstract not supplied at this time
Authors
C.K. Dodd
Imperiled mammalian fauna of aquatic ecosystems in the Southeast: A historical perspective Imperiled mammalian fauna of aquatic ecosystems in the Southeast: A historical perspective
About 100 species of mammals are endemic to the southeastern United States, an area of diverse habitat types and high biodiversity. Many of these species are either formally considered aquatic or semi-aquatic, or they are otherwise closely associated with aquatic ecosystems. In the southeastern United States, greater than 80 percent of mammalian species are listed in some category of...
Authors
M. J. Harvey, J. D. Clark
Imperiled mammalian fauna of aquatic ecosystems in the Southeast: A management perspective Imperiled mammalian fauna of aquatic ecosystems in the Southeast: A management perspective
Management of imperiled mammals associated with aquatic ecosystems in the southeastern United States ranges from almost no management for some species to intensive, high-profile programs for others. Aquatic mammals are notoriously difficult to census because they are often secretive, trap-wary, relatively rare, or have extensive movement patterns. As a result, conservation efforts aimed...
Authors
J. D. Clark, M. J. Harvey
Long bone fracture management in a sandhill crane: a case report Long bone fracture management in a sandhill crane: a case report
No abstract available.
Authors
P. N. Klein, D. Thompson
Macrophage aggregates: biomarker for immune function in fishes? Macrophage aggregates: biomarker for immune function in fishes?
No abstract available at this time
Authors
V. S. Blazer, J.W. Fournie, B. A. Weeks-Perkins
Management of an endangered species: the black-footed ferret Management of an endangered species: the black-footed ferret
No abstract available.
Authors
D. E. Biggins, B. J. Miller, T. W. Clark, R.P. Reading
Maps of the shallow shelf off the Florida Keys (subsurface bedrock topography, overlying reefs and sediments, benthic habitats) Maps of the shallow shelf off the Florida Keys (subsurface bedrock topography, overlying reefs and sediments, benthic habitats)
No abstract available.
Authors
Barbara H. Lidz