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: 3111
Patterns of mammalian species richness and habitat associations in Pennsylvania Patterns of mammalian species richness and habitat associations in Pennsylvania
Landscape variables were employed as indices of habitat heterogeneity, fragmentation, and human influence on the environment to characterize constituent units of a 635 km2 grid covering the state of Pennsylvania. Species richness was determined by overlaying the distributions of all 60 terrestrial mammalian species found within the state. All landscape variables investigated were...
Authors
Kyle Joly, W.L. Myers
Serologic survey for canine coronavirus in wolves from Alaska Serologic survey for canine coronavirus in wolves from Alaska
Wolves (Canis lupus) were captured in three areas of Interior Alaska (USA). Four hundred twenty-five sera were tested for evidence of exposure to canine coronavirus by means of an indirect fluorescent antibody procedure. Serum antibody prevalence averaged 70% (167/240) during the spring collection period and 25% (46/185) during the autumn collection period. Prevalence was 0% (0/42) in...
Authors
Randall L. Zarnke, Jim F. Evermann, Jay M. Ver Hoef, Mark E. McNay, Rodney D. Boertje, Craig L. Gardner, Layne G. Adams, Bruce W. Dale, John W. Burch
Alaska resource data files: Fairbanks quadrangle Alaska resource data files: Fairbanks quadrangle
No abstract available.
Authors
Curtis J. Freeman, Janet Schaefer
Alaska resource data file: Goodnews Bay quadrangle Alaska resource data file: Goodnews Bay quadrangle
No abstract available.
Authors
Travis Hudson
Alaska resource data files: Hagemeister Island quadrangle Alaska resource data files: Hagemeister Island quadrangle
No abstract available.
Authors
Travis Hudson
Alaska resource data file: Cordova quadrangle Alaska resource data file: Cordova quadrangle
No abstract available.
Authors
S.W. Nelson
Alaska resource data file: Healy quadrangle Alaska resource data file: Healy quadrangle
No abstract available.
Authors
D. L. Stevens
Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska Outcrop structural data from parts of the Petersburg and Sumdum 1:250,000-scale quadrangles, southeastern Alaska
This report presents a compilation of 4203 measurements of outcrop structures from part of the Petersburg 1:250,000-scale quadrangle in southeastern Alaska. We collected 1966 measurements, and an additional 2237 unpublished measurements were compiled from field notebooks a from a field mapping effort in the late 1970’s and early 1980’s. These data are listed in spreadsheet and derivative...
Authors
Peter J. Haeussler, Susan M. Karl
Sex-biased gene flow in spectacled eiders (Anatidae): Inferences from molecular markers with contrasting modes of inheritance Sex-biased gene flow in spectacled eiders (Anatidae): Inferences from molecular markers with contrasting modes of inheritance
Genetic markers that differ in mode of inheritance and rate of evolution (a sex-linked Z-specific microsatellite locus, five biparentally inherited microsatellite loci, and maternally inherited mitochondrial [mtDNA] sequences) were used to evaluate the degree of spatial genetic structuring at macro- and microgeographic scales, among breeding regions and local nesting populations within...
Authors
Kim T. Scribner, Margaret R. Petersen, Raymond L. Fields, Sandra L. Talbot, John M. Pearce, Ronald K. Chesser
Estimates of shorebird populations in North America Estimates of shorebird populations in North America
Estimates are presented for the population sizes of 53 species of Nearctic shorebirds occurring regularly in North America, plus four species that breed occasionally. Population estimates range from a few tens to several millions. Overall, population estimates most commonly fall in the range of hundreds of thousands, particularly the low hundreds of thousands; estimated population sizes...
Authors
R. I. G. Morrison, Robert E. Gill, B. A. Harrington, S. K. Skagen, G. W. Page, C. L. Gratto-Trevor, S. M. Haig
Persistence of oiling in mussel beds after the Exxon Valdez oil spill Persistence of oiling in mussel beds after the Exxon Valdez oil spill
Persistence and weathering of Exxon Valdez oil in intertidal mussel (Mytilus trossulus) beds in Prince William Sound (PWS) and along the Gulf of Alaska was monitored from 1992 to 1995. Beds with significant contamination included most previously oiled areas in PWS, particularly within the Knight Island group and the Kenai Peninsula. In sediments, yearly mean concentrations of total...
Authors
M.G. Carls, M.M. Babcock, P.M. Harris, G.V. Irvine, J.A. Cusick, S.D. Rice
Polar bears in the Beaufort Sea: A 30-year mark-recapture case history Polar bears in the Beaufort Sea: A 30-year mark-recapture case history
Knowledge of population size and trend is necessary to manage anthropogenic risks to polar bears (Ursus maritimus). Despite capturing over 1,025 females between 1967 and 1998, previously calculated estimates of the size of the southern Beaufort Sea (SBS) population have been unreliable. We improved estimates of numbers of polar bears by modeling heterogeneity in capture probability with...
Authors
Steven C. Amstrup, T. L. McDonald, I. Stirling