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: 2,607
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Year Published: 1992

Puffins as samplers of juvenile pollock and other forage fish in the Gulf of Alaska

We sampled the nestling diets of tufted puffins (Fratercula cirrhata) and horned puffins (F. corniculata) in 3 years at colonies from the north-central Gulf of Alaska to the eastern Aleutian Islands, Alaska, USA. Overall, tufted puffins consumed (by weight) 41% sandlance (Ammodytes hexapterus), 22% capelin (Mallotus villosus), 19% walleye pollock...

Hatch, Scott; Sanger, Gerald A.
Puffins as samplers of juvenile pollock and other forage fish in the Gulf of Alaska; 1992; Article; Journal; Marine Ecology Progress Series; Hatch, Scott; Sanger, Gerald A.

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Year Published: 1992

Change-in-ratio

Change-in-ratio (CIR) methods are used to estimate parameters for ecological populations subject to differential removals from population subclasses. Subclasses can be defined according to criteria such as sex, age, or size of individuals. Removals are generally in the form of closely monitored sport or commercial harvests. Estimation is based on...

El-Shaarawi, Abdel H.; Piegorsch, Walter W.; Udevitz, Mark S.

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Year Published: 1992

Geologic studies in Alaska by the U.S. Geological Survey, 1990

This collection of papers continues the annual series of U.S. Geological Survey (USGS) reports on geologic investigations in Alaska. From 1975 through 1988, the series was published as USGS circulars. The first of these appeared under the title "The United States Geological Survey in Alaska: Accomplishments during 1975," and the series continued...

Bradley, Dwight C.; Ford, Arthur B.
Geologic studies in Alaska by the U.S. Geological Survey, 1990; 1992; B; 1999; Edited by Bradley, Dwight Culver; Ford, Arthur B.

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Year Published: 1992

Correlation of pre-Carboniferous carbonate successions of northern Alaska

Fault-bounded successions of pre-Carboniferous (meta)carbonate rocks occur throughout northern Alaska. Successions studied in detail are those in the York Mountains (Seward Peninsula), the western and eastern Baird Mountains (western Brooks Range), the Snowden Mountain area (central Brooks Range), and the Sublik and Sadlerochit Mountains (eastern...

Thurston, Dennis K.; Fujita, Kazuya; Dumoulin, Julie A.; Harris, Anita G.

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Year Published: 1992

Deep-water facies of the Lisburne Group, west-central Brooks Range, Alaska

Deep-water lithofacies of the Lisburne Group (chiefly Carboniferous) occur in thurst sheets in the western part of the foreland fold-and-thrust belt of the Brooks Range and represent at least three discrete units. The Kuna Formation (Brooks Range allochthon) consists mostly of spiculitic mudstone and lesser shale; subordinate carbonate layers are...

Thurston, Dennis K.; Fujita, Kazuya; Dumoulin, Julie A.; Harris, Anita G.; Schmidt, Jeanine M.

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Year Published: 1992

Density of loons in central Alaska

Loons breed across North America from the high arctic south to about 43 north latitude. (AOU 1983). Populations, particularly of Common Loons (Gavia immer) have recently declined in the continental U.S. and southern Canada (Sutcliff 1979, Titus and VanDruff 1981, McIntyre 1988). As a result, state and private natural resource organizations began...

Lanctot, Richard B.; Quang, Pham Xuan

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Year Published: 1992

Time allocation by Greater White-fronted Geese: Influence of diet, energy reserves and predation

I determined the amount of time Greater White-fronted Geese (Anser albifrons frontalis) allocated to various activities from September to May, 1980-1982 at their primary wintering areas in the Pacific Flyway of North America. The length of time spent on roosts during the day was positively correlated to day length. Geese at roost sites spent the...

Ely, Craig R.

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Year Published: 1992

Antipredator strategies in breeding Bristle-thighed Curlews

Each fall the world’s breeding population of Bristle-thighed Curlews (Numenius tahitiensis) arrives on the central Pacific wintering grounds following a migration that entails a non- stop flight of over 5000 kilometers. Sun-drenched, palm-shrouded atolls will be their home for the ensuing eight months. Even in the avian world, however, such...

McCaffery, Brian J.; Gill, Robert E.

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Year Published: 1992

Breeding chronology of mottled ducks in a Texas coastal marsh

The relationship between breeding chronology of Mottled Ducks (Anas fulvigula fulvigula) and wetland conditions at San Bernard National Wildlife Refuge was examined over a 3-yr period. Median nest initiation dates varied by as much as 68 d among years. Initiation occurred earlier in 1985 and 1987 versus 1986 (P < 0.05). Nesting initiation was...

Grand, James B.

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Year Published: 1992

Change-in-ratio methods for estimating population size

Change-in-ratio (CIR) methods can provide an effective, low cost approach for estimating the size of wildlife populations. They rely on being able to observe changes in proportions of population subclasses that result from the removal of a known number of individuals from the population. These methods were first introduced in the 1940’s to...

McCullough, Dale R.; Barrett, Reginald H.; Udevitz, Mark S.; Pollock, Kenneth H.

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Year Published: 1992

Changes in Alaskan soft-bottom prey communities along a gradient in sea otter predation

Sea Otter (Enhydra lutris), well documented as "keystone" predators in rocky marine communities, were found to exert a strong influence on infaunal prey communities in soft-sediment habitats. Direct and indirect effects of sea otter predation on subtidal soft-bottom prey communities were evaluated along a temporal gradient of sea otter occupancy...

Kvitek, R.G.; Oliver, J.S.; DeGange, A.R.; Anderson, B.S.

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Year Published: 1992

Depositional history, nannofossil biostratigraphy, and correlation of Argo Abyssal Plain Sites 765 and 261

Sediments from the Argo Abyssal Plain (AAP), northwest of Australia, are the oldest known from the Indian Ocean and were recovered from ODP Site 765 and DSDP Site 261. New biostratigraphic and sedimentologic data from these sites, as well as reinterpretations of earlier findings, indicate that basal sediments at both localities are of Late...

Stewart, Sondra K.; Kennett, Diana; Mazzullo, Elsa K.; Dumoulin, Julie A.; Bown, Paul R.

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