Unified Interior Regions

Region 11: Alaska

Alaska Science Center

Alaska Science Center

4210 University Drive
Anchorage, AK 99508
Phone: (907) 786-7000

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Volcano Science Center

Volcano Science Center

4230 University Drive
Anchorage, AK 99508
Phone: (907) 786-7497

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Climate Adaptation Science Center

Climate Adaptation Science Center

4230 University Drive
Anchorage, AK 99508
Phone: 907-301-7830

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USGS research activities relevant to Alaska have yielded more than 9400 historical publications. This page features some of the most recent newsworthy research findings.

Search USGS publications for Alaska

Arctic Science for Decision Maker

2020 USGS Alaska Annual Science Report
Filter Total Items: 2,644
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Year Published: 1993

Cub adoption by brown bears (Ursus arctos middendorffi) on Kodiak Island, Alaska

We report three cases where female Brown Bears (Ursus arctos middendorffi) with new (1 winter season. The adoptions occurred in a sampling of 104 litters produced by 89 different females on Kodiak Island, Alaska during 1982-1990. A maximum of six cubs were reared from litters that probably would have produced 3-4 subadults if the adoptions had not...

Barnes, V.; Smith, R.
Cub adoption by brown bears (Ursus arctos middendorffi) on Kodiak Island, Alaska; 1993; Article; Journal; Canadian Field-Naturalist; Barnes, V., Jr.; Smith, R.

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Year Published: 1993

Current status and recent dynamics of the Black Brant Branta bernicla breeding population

We summarize current knowledge about the distribution of Pacific Black Brant and recent dynamics of colonies, particularly on the Yukon-Kuskokwim (Y-K) Delta, Alaska. About 20,000 nests are required to produce the number of young in the autumn flight using estimates of clutch size, hatching success and gosling survival based on colonies on the Y-K...

Sedinger, James S.; Lensink, Calvin J.; Ward, David H.; Anthony, Michael W.; Wege, Michael L.; Byrd, G. Vernon

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Year Published: 1993

Cytonuclear genetic architecture in mosquitofish populations and the possible roles of introgressive hybridization

Spatial genetic structure in populations of mosquitofish (Gambusia) sampled throughout the south-eastern United States was characterized using mitochondrial (mt) DNA and allozyme markers. Both sets of data revealed a pronounced genetic discontinuity (along a broad path extending from south-eastern Mississippi to north-eastern Georgia) that...

Scribner, Kim T.; Avise, John C.

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Year Published: 1993

Ecology and population status of Northern Fulmars (Fulmarus glacialis) of the North Pacific

In the North Pacific, the breeding distribution of Northern Fulmars (Fulmarus glacialis) includes about equal numbers of very large colonies (50,000-500,000 individuals) and relatively small ones (5-5,000 individuals). The almost complete segregation of light and dark colour phases between adjacent colonies in the Bering Sea and Sea of Okhotsk...

Vermeer, Kees; Briggs, K.T.; Morgan, K.H.; Siegel-Causey, D.; Hatch, Scott A.

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Year Published: 1993

Factors influencing depredation of artificial duck nests

Because artificial nests can facilitate controlled experiments of nest success, we used them to assess whether human visitation, nest density, vegetation structure, and proximity to habitat edge could affect depredation of duck nests on Yukon Flats National Wildlife Refuge, Alaska. More (P < 0.01) nests in a plot visited daily (100%) were...

Esler, Daniel N.; Grand, James B.

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Year Published: 1993

Family stability in greater white-fronted geese

I investigated the stability of parent-offspring bonds, and sibling-sibling bonds of neck-banded Greater White-fronted Geese (Anser albifrons frontalis) during winters (September-May) in California and southern Oregon from 1979 to 1989. Geese captured at feeding sites were more likely to be in social groups than those captured at roosting sites....

Ely, Craig R.

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Year Published: 1993

Histopathologic lesions in sea otters exposed to crude oil

Following the Exxon Valdez oil spill in Prince William Sound, Alaska, sea otters (Enhydra lutris) that appeared to be contaminated with oil, that were in danger of becoming contaminated, or that were behaving abnormally were captured and taken to rehabilitation centers. Exposure to oil was assessed by visual examination when otters arrived at the...

Lipscomb, T.P.; Harris, R.K.; Moeller, R.B.; Pletcher, J.M.; Haebler, R.J.; Ballachey, Brenda E.

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Year Published: 1993

Human disturbances of denning polar bears in Alaska

Amstrup, Steven C.
Human disturbances of denning polar bears in Alaska; 1993; Article; Journal; Arctic; Amstrup, S. C.

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Year Published: 1993

Hybrid zone dynamics are influenced by genotype-specific variation in life-history traits: Experimental evidence from hybridizing Gambusia species

Results from two experiments are presented that contrast differences in life-history traits and population dynamics between two species of live bearing fishes (Gambusia affinis and G. holbrooki) that hybridize across portions of the southeastern United States. Progeny from parental holbrooki and holbrooki-affinis F1 crosses exhibited larger...

Scribner, Kim T.

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Year Published: 1993

Implementation of biomarker-based studies

Biomarkers may be used to determine chemical exposure and effects in several important ways. These include (1) evaluation of new agricultural or industrial chemicals for effects, (2) screening of municipal or industrial effluents, (3) determining the geographic distribution of chemical effects in the environment and their changes over time, (4)...

Peakall, David B.; Shugart, Lee R.; Stegeman, John J.; Ballachey, Brenda E.; Bickham, J.; Höcker, B.; Kennedy, S.; Thompson, H.; Vethaak, A.D.

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Year Published: 1993

In my experience: Mitochondrial DNA in wildlife taxonomy and conservation biology: Cautionary notes

Several recently published papers discussed the importance of systematics (the study of evolutionary and genetic relationships among organisms) and taxonomy (the naming and classification of organisms) for managing wildlife (Ryder 1986, Avise 1989, Amato 1991, O'Brien and Mayr 1991, Dowling et al. 1992), Often, classification below the species...

Cronin, Matthew A.
Mitochondrial DNA in wildlife taxonomy and conservation biology: cautionary notes; 1993; Article; Journal; Wildlife Society Bulletin; Cronin, M. A.

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Year Published: 1993

Kappa-casein polymorphisms among cattle breeds and bison herds

We identified the HindIII restriction site polymorphism Of kappa-casein in cattle reported by Pinder et al. (Animal Genetics 22, 11, 1991) and found an additonal polymorphism (RsaI) in cattle and bison. The Hin dIII and Rsa I restriction sites were mapped and three haplotypes (alleles) were identified. Preliminary screening of 39 cattle and 71...

Cronin, M.A.; Cockett, N.
Kappa-casein polymorphisms among cattle breeds and bison herds; 1993; Article; Journal; Animal Genetics; Cronin, M. A.; Cockett, N.

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