Publications
USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.
Filter Total Items: 3104
Marine mammal populations Marine mammal populations
No abstract available.
Authors
Alan M. Springer, Sara J. Iverson, James L. Bodkin
Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska Genetic characterization of Common Eiders breeding in the Yukon-Kuskokwim Delta, Alaska
We assessed population genetic subdivision among four colonies of Common Eiders (Somateria mollissima v-nigrum) breeding in the Yukon-Kuskokwim Delta (YKD), Alaska, using microsatellite genotypes and DNA sequences with differing modes of inheritance. Significant, albeit low, levels of genetic differentiation were observed between mainland populations and Kigigak Island for nuclear intron...
Authors
Sarah A. Sonsthagen, Sandra L. Talbot, Kevin G. McCracken
Exhumation and continental strike-slip fault systems: Introduction Exhumation and continental strike-slip fault systems: Introduction
Metamorphic rocks adjacent to and within strike-slip faultsystems occur in a wide range of tectonic settings. Detailed studies show that for a number of these locales a significant part of the exhumation occurred during strike-slip fault motion, but the specific processes involved are often cryptic. Although some sites share characteristic features, such as metamorphic rocks exhumed in...
Authors
S. M. Roeske, A.B. Till, D.A. Foster, J.C. Sample
Major and Trace-Element Data from Stream-Sediment and Rock Samples Collected in the Taylor Mountains 1:250,000-Scale Quadrangle, Alaska Major and Trace-Element Data from Stream-Sediment and Rock Samples Collected in the Taylor Mountains 1:250,000-Scale Quadrangle, Alaska
In the summers of 2004, 2005, and 2006, the U.S. Geological Survey conducted a reconnaissance geochemical survey of the drainage basins throughout most of the Taylor Mountains 1:250,000-scale quadrangle, in southwestern Alaska. The purpose of the study was to locate areas of potential interest for ore minerals, provide data that may be used to determine regional-scale element baselines...
Authors
Elizabeth A. Bailey, Gregory K. Lee, Seth H. Mueller, Bronwen Wang, Zoe Ann Brown, Greg A. Beischer
Strategies for survival: Stellar sea lions, harbor seals and sea otters Chapter 4.9 Strategies for survival: Stellar sea lions, harbor seals and sea otters Chapter 4.9
No abstract available.
Authors
Alan M. Springer, Sara J. Iverson, James L. Bodkin
New technologies at the Desert Research Institute make a difference in wildland fire management New technologies at the Desert Research Institute make a difference in wildland fire management
No abstract available.
Authors
Timothy J. Brown, Crystal A. Kolden
Marine ecoregions of Alaska: Chapter 6.1 Marine ecoregions of Alaska: Chapter 6.1
No abstract available.
Authors
John F. Piatt, A.M. Springer
Geologic map of the Siksikpuk River area, Chandler Lake quadrangle, Alaska Geologic map of the Siksikpuk River area, Chandler Lake quadrangle, Alaska
No abstract available.
Authors
P.R. Peapples, W. K. Wallace, Marwan A. Wartes, R.F. Swenson, C. G. Mull, Julie A. Dumoulin, E. E. Harris, E.S. Finzel, R.R. Reifenstuhl, A.M. Loveland
Movements and foraging effort of Steller's Eiders and Harlequin Ducks wintering near Dutch Harbor, Alaska Movements and foraging effort of Steller's Eiders and Harlequin Ducks wintering near Dutch Harbor, Alaska
We studied the movements and foraging effort of radio-marked Steller's Eiders (Polysticta stelleri) and Harlequin Ducks (Histrionicus histrionicus) to evaluate habitat quality in an area impacted by industrial activity near Dutch Harbor, Alaska. Foraging effort was relatively low, with Steller's Eiders foraging only 2.7 ± 0.6 (SE) hours per day and Harlequin Ducks 4.1 ± 0.5 hours per day...
Authors
John A. Reed, Paul L. Flint
Spatial distribution of juvenile and adult female Tanner crabs (Chionoecetes bairdi) in a glacial fjord ecosystem: Implications for recruitment processes Spatial distribution of juvenile and adult female Tanner crabs (Chionoecetes bairdi) in a glacial fjord ecosystem: Implications for recruitment processes
A systematic pot survey in Glacier Bay, Alaska, was conducted to characterize the spatial distribution of juvenile and adult female Tanner crabs, and their association with depth and temperature. The information was used to infer important recruitment processes for Tanner crabs in glaciated ecosystems. High-catch areas for juvenile and adult female Tanner crabs were identified using...
Authors
J.K. Nielsen, S. James Taggart, Thomas C. Shirley, Jennifer Mondragon
Tower counts Tower counts
Counting towers provide an accurate, low-cost, low-maintenance, low-technology, and easily mobilized escapement estimation program compared to other methods (e.g., weirs, hydroacoustics, mark-recapture, and aerial surveys) (Thompson 1962; Siebel 1967; Cousens et al. 1982; Symons and Waldichuk 1984; Anderson 2000; Alaska Department of Fish and Game 2003). Counting tower data has been...
Authors
Carol Ann Woody
Alaskan birds at risk: Widespread beak deformities in resident species Alaskan birds at risk: Widespread beak deformities in resident species
The team creeps silently across a well-tended lawn, eyes drawn to a small wooden box perched several meters up a lone birch tree. The first biologist is armed with a broom in one hand and a bug net in the other. Her partner wields a lunchbox-sized plastic case and a tree-climbing ladder that looks like an oversized radio antenna. A neighbor peers out her window from across the street to...
Authors
Caroline R. Van Hemert