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: 2890
Eskimo Curlew (Numenius borealis)
No abstract available
Authors
Robert E. Gill, Pablo Canevari, Eve H. Iversen
Leucocytozoon simondi in Emperor Geese from the Yukon-Kuskokwim Delta in Alaska
We surveyed Emperor Geese (Chen canagica) in western Alaska for avian hematozoa. Blood smears were collected from 134 adults and goslings in late July 1996, on their breeding grounds on the Yukon-Kuskokwim Delta. One of 134 (0.7%) Emperor Geese harbored Leucocytozoon simondi, representing a new host record for this parasite. No other hematozoa were detected. This is one of few reports of avian blo
Authors
Tuula E. Hollmen, J. Christian Franson, Lynn H. Creekmore, Joel A. Schmutz, Ada C. Fowler
Townsend's Warbler (Setophaga townsendi)
No abstract available
Authors
A.L. Wright, G.D. Hayward, Steven M. Matsuoka, P.H. Hayward
Effects of human activity on brown bear use of the Kulik River, Alaska
I systematically observed brown bear (Ursus arctos) and human activity on a sockeye salmon (Oncorhynchus nerka) stream in Katmai National Park during fall 1993 and 1995. More than 700 hours of observations were used to determine the temporal and spatial use patterns by people and bears as well as the frequency, nature, and outcome of bear-human interactions. Bears altered their temporal and spatia
Authors
Tom S. Smith
Geobotanical aspects of Simeonof Island, Shumagin Islands, southwestern Alaska
No abstract available.
Authors
F.J.A. Daniels, Stephen S. Talbot, Sandra L. Talbot, W.B. Schofield
Surficial geologic map along the Castle Mountain Fault between Houston and Hatcher Pass Road, Alaska
The surficial geology of the map area is dominated by sedimentary deposits laid down during and after the Naptowne glaciation (Karlstrom, 1964) of late Pleistocene age. During this episode, a large valley glacier flowed westward down the Matanuska Valley along the southern flank of the Talkeetna Mountains. The youngest of two documented advances has been referred to as the Elmendorf stade, which r
Authors
Peter J. Haeussler
Geologic map of central (interior) Alaska
Introduction: This map and associated digital databases are the result of a compilation and reinterpretation of published and unpublished 1:250,000- and limited 1:125,000- and 1:63,360-scale mapping. The map area covers approximately 416,000 sq km (134,000 sq mi) and encompasses 25 1:250,000-scale quadrangles in central Alaska. The compilation was done as part of the U.S. Geological Survey Nation
Authors
Frederic H. Wilson, James H. Dover, Dwight Bradley, Florence R. Weber, Thomas K. Bundtzen, Peter J. Haeussler
Water quality in the central Nebraska basins, Nebraska, 1992-95
This report is intended to summarize major findings that emerged between 1992 and 1995 from the water-quality assessment of the Central Nebraska Basins Study Unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in waterresource management. Indeed, this report addresses many of the concerns raise
Authors
S.A. Frenzel, R.B. Swanson, T.L. Huntzinger, J. K. Stamer, P.J. Emmons, R. B. Zelt
Identification of polar bear den habitat in northern Alaska
The goal of this project is to refine the information collected previously on maternal denning, into digital maps that show where polar bears are likely to create future dens in northern Alaska. Such maps will allow a priori recommendations regarding timing and geographic locations of proposed human developments; and hence provide managers with an important mitigation and management tool.
Authors
Steven C. Amstrup, Gerald W. Garner
Pacific halibut in Glacier Bay National Park, Alaska
The Pacific halibut is a large (up to 3 meters long) predatory fish in the flatfish family. Glacier Bay National Park is the site of extensive and controversial commercial halibut fisheries that began before the park was established in 1925. These fisheries continue despite prohibitive regulations, including the Wilderness Act and National Park Service regulations. Today, more than 70 commercial b
Authors
Philip N. Hooge, Spencer J. Taggart
Ecological, morphological, genetic and life history characteristics of two sockeye salmon populations, Tustumena Lake, Alaska
Populations can differ in both phenotypic and molecular genetic traits. Phenotypic differences likely result from differential selection pressures in the environment, whereas differences in neutral molecular markers result from genetic drift associated with some degree of reproductive isolation. Two sockeye salmon, Oncorhynchus nerka, populations were compared using both phenotypic and genotypic c
Authors
Carol Ann Woody