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
Alaska resource data file: Teller quadrangle Alaska resource data file: Teller quadrangle
No abstract available.
Authors
Travis Hudson
Alaska resource data file: Bradfield Canal quadrangle Alaska resource data file: Bradfield Canal quadrangle
No abstract available.
Authors
Henry C. Berg
Alaska resource date file: Talkeetna Mountains quadrangle Alaska resource date file: Talkeetna Mountains quadrangle
No abstract available.
Authors
J.R. Riehle
Alaska resource data file: Anchorage quadrangle Alaska resource data file: Anchorage quadrangle
No abstract available.
Authors
D P. Bickerstaff, S. W. Huss
Pacific halibut in Glacier Bay National Park, Alaska 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...
Authors
Philip N. Hooge, Spencer J. Taggart
Integrating ecosystem studies: A Bayesian comparison of hypotheses Integrating ecosystem studies: A Bayesian comparison of hypotheses
Ecosystem studies are difficult to interpret because of the complexity and number of pathways that may affect a phenomenon of interest. It is not possible to study all aspects of a problem; thus subjective judgment is required to weigh what has been observed in the context of components that were not studied but may have been important. This subjective judgment is usually a poorly...
Authors
Milo D. Adkison, Brenda E. Ballachey, James L. Bodkin, Leslie E. Holland-Bartels
Satellite telemetry: A new tool for wildlife research and management Satellite telemetry: A new tool for wildlife research and management
The U.S. Fish and Wildlife Service and the Alaska Department of Fish and Game have cooperated since 1984 to develop and evaluate satellite telemetry as a means of overcoming the high costs and logistical problems of conventional VHF (very high frequency) radiotelemetry systems. Detailed locational and behavioral data on caribou (Rangifer tarandus), polar bears (Ursus maritimus), and...
Authors
Steven G. Fancy, Larry F. Pank, David C. Douglas, Catherine H. Curby, Gerald W. Garner, Steven C. Amstrup, Wayne L. Regelin
Responses of brown bears to human activities at O'Malley River, Kodiak Island, Alaska Responses of brown bears to human activities at O'Malley River, Kodiak Island, Alaska
We classified levels of direct response of brown bears (Ursus arctos middendorffi) to aircraft, watercraft, and groups of people on the O'Malley River area of Kodiak Island, Alaska. General public use occurred on the area in 1991 and 1993, whereas structured bear viewing programs used the area in 1992 and 1994. Brown bears displayed high (running) or moderate (walking away) response on...
Authors
Gregory A. Wilker, Victor G. Barnes
Identifying and mitigating errors in satellite telemetry of polar bears Identifying and mitigating errors in satellite telemetry of polar bears
Satellite radiotelemetry is a useful method of tracking movements of animals that travel long distances or inhabit remote areas. However, the logistical constraints that encourage the use of satellite telemetry also inhibit efforts to assess accuracy of the resulting data. To investigate effectiveness of methods that might be used to improve the reliability of these data, we compared 3...
Authors
Stephen M. Arthur, Gerald W. Garner, Tamara L. Olson
Damage reduction to ponderosa pine seedlings from northern pocket gophers by vegetation management through grass seeding and herbicide treatment Damage reduction to ponderosa pine seedlings from northern pocket gophers by vegetation management through grass seeding and herbicide treatment
2,4-D herbicide treatment was applied to 2 treatment units to remove the forbs that are the preferred food of pocket gophers. One of these units also was seeded with grasses prior to the 2,4-D treatment. The effect of 2,4-D and grass seeding plus 2,4-D treatments were compared to an untreated control unit. Long-term monitoring (7 yr) was conducted on the 3 units for vegetative cover (7...
Authors
Richard M. Engeman, V.G. Barnes, R.M. Anthony, Heather W. Krupa
Double-stocking for overcoming damage to conifer seedlings by pocket gophers Double-stocking for overcoming damage to conifer seedlings by pocket gophers
A 5-yr study was conducted on national forests in Idaho and Oregon to evaluate how doubling the seedling stocking rate of lodgepole pine (Pinus contorta) would relate to 5-year survival and the uniformity of distribution of seedlings in the presence of northern pocket gopher (Thomomys talpoides) damage. Either 4 or 8 seedlings were planted in 40-m2 subplots (1000 or 2000 seedlings/ha)...
Authors
Richard M. Engeman, Richard M. Anthony, Victor G. Barnes, Heather W. Krupa, James Evans
Certainty of paternity and paternal investment in eastern bluebirds and tree swallows Certainty of paternity and paternal investment in eastern bluebirds and tree swallows
Extra-pair paternity is common in many socially monogamous passerine birds with biparental care. Thus, males often invest in offspring to which they are not related. Models of optimal parental investment predict that, under certain assumptions, males should lower their investment in response to reduced certainty of paternity. We attempted to reduce certainty of paternity experimentally...
Authors
Bart Kempenaers, Richard B. Lanctot, Raleigh J. Robertson