Unified Interior Regions

Region 11: Alaska

Alaska Science Center

Alaska Science Center

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

View Center Website

Volcano Science Center

Volcano Science Center

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

View Center Website

Climate Adaptation Science Center

Climate Adaptation Science Center

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

View Center Website

Regions L2 Landing Page Tabs

Filter Total Items: 2,376
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Year Published: 2011

Long-term increases in young-of-the-year growth of Arctic cisco Coregonus autumnalis and environmental influences

Arctic cisco Coregonus autumnalis young-of-year (YOY) growth was used as a proxy to examine the long-term response of a high-latitude fish population to changing climate from 1978 to 2004. YOY growth increased over time (r2 = 0·29) and was correlated with monthly averages of the Arctic oscillation index, air temperature, east wind speed,...

von Biela, Vanessa R.; Zimmerman, Christian E.; Moulton, L. L.
Von Biela, V. R., C. E. Zimmerman, and L. L. Moulton. 2011. Long-term increases in young-of-the-year growth of Arctic cisco (Coregonus autumnalis) and environmental influences. Journal of Fish Biology 78(1):39-56. doi:10.1111/j.1095-8649.2010.02832.x

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Year Published: 2011

Secular trends in the geologic record and the supercontinent cycle

Geologic secular trends are used to refine the timetable of supercontinent assembly, tenure, and breakup. The analysis rests on what is meant by the term supercontinent, which here is defined broadly as a grouping of formerly dispersed continents. To avoid the artificial pitfall of an all-or-nothing definition, quantitative measures of “...

Bradley, Dwight C.
Secular trends in the geologic record and the supercontinent cycle; 2011; Article; Journal; Earth-Science Reviews; Bradley, Dwight C.

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Year Published: 2011

An isotopic approach to measuring nitrogen balance in caribou

Nutritional restrictions in winter may reduce the availability of protein for reproduction and survival in northern ungulates. We refined a technique that uses recently voided excreta on snow to assess protein status in wild caribou (Rangifer tarandus) in late winter. Our study was the first application of this non‐invasive, isotopic approach to...

Gustine, David D.; Barboza, Perry S.; Adams, Layne G.; Farnell, Richard G.; Parker, Katherine L.
An isotopic approach to measuring nitrogen balance in caribou; 2011; Article; Journal; Journal of Wildlife Management; Gustine, D. D.; Barboza, P. S.; Adams, L. G.; Farnell, R. G.; Parker, K. L.

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Year Published: 2011

Assessment of clinical pathology and pathogen exposure in sea otters (Enhydra lutris) bordering the threatened population in Alaska

Northern sea otter (Enhydra lutris kenyoni) abundance has decreased dramatically over portions of southwest Alaska, USA, since the mid-1980s, and this stock is currently listed as threatened under the Endangered Species Act. In contrast, adjacent populations in south central Alaska, USA, and Russia have been stable to increasing during the same...

Goldstein, Tracey; Gill, Verena A.; Tuomi, Pamela A.; Monson, Daniel H.; Burdin, Alexander; Conrad, Patricia A.; Dunn, J. Lawrence; Field, Cara L.; Johnson, Christine K.; Jessup, David A.; Bodkin, James L.; Doroff, Angela M.
Assessment of clinical pathology and pathogen exposure in sea otters (Enhydra lutris) bordering the threatened population in Alaska; 2011; Article; Journal; Journal of Wildlife Diseases; Goldstein, T.; Gill, V. A.; Tuomi, P.; Monson, D.; Burdin, A.; Conrad, P. A.; Dunn, J. L.; Field, C.; Johnson, C.; Jessup, D. A.; Bodkin, J.; Doroff, A. M.

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Year Published: 2011

Characteristics of foraging sites and protein status in wintering muskoxen: insights from isotopes of nitrogen

Identifying links between nutritional condition of individuals and population trajectories greatly enhances our understanding of the ecology, conservation, and management of wildlife. For northern ungulates, the potential impacts of a changing climate to populations are predicted to be nutritionally mediated through an increase in the severity and...

Gustine, David D.; Barboza, Perry S.; Lawler, James P.; Arthur, Stephen M.; Shults, Brad S.; Persons, Kate; Adams, Layne G.
Characteristics of foraging sites and protein status in wintering muskoxen: Insights from isotopes of nitrogen; 2011; Article; Journal; Oikos; Gustine, D. D.; Barboza, P. S.; Lawler, J. P.; Arthur, S. M.; Shults, B. S.; Persons, K.; Adams, L. G.

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Year Published: 2011

Coelomic implantation of satellite transmitters in the bar-tailed godwit (Limosa lapponica) and the bristle-thighed curlew (Numenius tahitiensis) using propofol, bupivacaine, and lidocaine

Intravenous propofol was used as a general anesthetic with a 2∶1 (mg∶mg) adjunctive mixture of lidocaine and bupivacaine as local anesthetics infiltrated into the surgical sites for implantation of satellite transmitters into the right abdominal air sac of 39 female and 4 male bar-tailed godwits (Limosa lapponica baueri and Limosa lapponica...

Mulcahy, Daniel M.; Gartrell, Brett D.; Gill, Robert E.; Tibbitts, T. Lee; Ruthrauff, Daniel R.
Coelomic implantation of satellite transmitters in the bar-tailed godwit (Limosa lapponica) and the bristle-thighed curlew (Numenius tahitiensis) using propofol, bupivacaine, and lidocaine; 2011; Article; Journal; Journal of Zoo and Wildlife Medicine; Mulcahy, Daniel M.; Gartrell, Brett; Gill, Robert E., Jr.; Tibbitts, T. Lee; Ruthrauff, Daniel R.

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Year Published: 2011

Consequences of long-distance swimming and travel over deep-water pack ice for a female polar bear during a year of extreme sea ice retreat

Polar bears (Ursus maritimus) prefer to live on Arctic sea ice but may swim between ice floes or between sea ice and land. Although anecdotal observations suggest that polar bears are capable of swimming long distances, no data have been available to describe in detail long distance swimming events or the physiological and reproductive...

Durner, George M.; Whiteman, J.P.; Harlow, H.J.; Amstrup, Steven C.; Regehr, E.V.; Ben-David, M.
Consequences of long-distance swimming and travel over deep-water pack ice for a female polar bear during a year of extreme sea ice retreat; 2011; Article; Journal; Polar Biology; Durner, G. M.; Whiteman, J. P.; Harlow, H. J.; Amstrup, S. C.; Regehr, E. V.; Ben-David, M.

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Year Published: 2011

Cytochrome P4501A biomarker indication of the timeline of chronic exposure of Barrow’s goldeneyes to residual Exxon Valdez oil

We examined hepatic EROD activity, as an indicator of CYP1A induction, in Barrow’s goldeneyes captured in areas oiled during the 1989 Exxon Valdez spill and those from nearby unoiled areas. We found that average EROD activity differed between areas during 2005, although the magnitude of the difference was reduced relative to a previous...

Esler, Daniel N.; Ballachey, Brenda E.; Trust, Kimberly A.; Iverson, Samuel A.; Reed, John A.; Miles, A. Keith; Henderson, John D.; Woodin, Bruce R.; Stegeman, John J.; McAdie, Malcolm; Mulcahy, Daniel M.; Wilson, Barry W.
Cytochrome P4501A biomarker indication of the timeline of chronic exposure of Barrow's goldeneyes to residual Exxon Valdez oil; 2011; Article; Journal; Marine Pollution Bulletin; Esler, D.; Ballachey, B. E.; Trust, K. A.; Iverson, S. A.; Reed, J. A.; Miles, A. K.; Henderson, J. D.; Woodin, B. R.; Stegeman, J. J.; McAdie, M.; Mulcahy, D. M.; Wilson, B. W.

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Year Published: 2011

Design of ecoregional monitoring in conservation areas of high-latitude ecosystems under contemporary climate change

Land ownership in Alaska includes a mosaic of federally managed units. Within its agency’s context, each unit has its own management strategy, authority, and resources of conservation concern, many of which are migratory animals. Though some units are geographically isolated, many are nevertheless linked by paths of abiotic and biotic flows...

Beever, Erik A.; Woodward, Andrea
Design of ecoregional monitoring in conservation areas of high-latitude ecosystems under contemporary climate change; 2011; Article; Journal; Biological Conservation; Beever, E. A.; Woodward, A.

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Year Published: 2011

Egg size matching by an intraspecific brood parasite

Avian brood parasitism provides an ideal system with which to understand animal recognition and its affect on fitness. This phenomenon of laying eggs in the nests of other individuals has classically been framed from the perspective of interspecific brood parasitism and host recognition of parasitic eggs. Few examples exist of strategies adopted...

Lemons, Patrick R.; Sedinger, James S.
Egg size matching by an intraspecific brood parasite; 2011; Article; Journal; Behavioral Ecology; Lemons, Patrick R.; Sedinger, James S.

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Year Published: 2011

Fire, grazing history, lichen abundance, and winter distribution of caribou in Alaska's taiga

In the early 1990s the Nelchina Caribou (Rangifer tarandus) Herd (NCH) began a dramatic shift to its current winter range, migrating at least an additional 100 km beyond its historic range. We evaluated the impacts of fire and grazing history on lichen abundance and subsequent use and distribution by the NCH. Historic (prior to 1990) and current (...

Collins, William B.; Dale, Bruce W.; Adams, Layne G.; McElwain, Darien E.; Joly, Kyle
Fire, grazing history, lichen abundance, and winter distribution of caribou in Alaska's taiga; 2011; Article; Journal; Journal of Wildlife Management; Collins, W. B.; Dale, B. W.; Adams, L. G.; McElwain, D. E.; Joly, K.

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Year Published: 2011

Hydrogeomorphic processes of thermokarst lakes with grounded-ice and floating-ice regimes on the Arctic coastal plain, Alaska

Thermokarst lakes cover > 20% of the landscape throughout much of the Alaskan Arctic Coastal Plain (ACP) with shallow lakes freezing solid (grounded ice) and deeper lakes maintaining perennial liquid water (floating ice). Thus, lake depth relative to maximum ice thickness (1·5–2·0 m) represents an important threshold that impacts permafrost,...

Arp, C.D.; Jones, Benjamin M.; Urban, F.E.; Grosse, G.
Hydrogeomorphic processes of thermokarst lakes with grounded-ice and floating-ice regimes on the Arctic coastal plain, Alaska; 2011; Article; Journal; Hydrological Processes; Arp, C. D.; Jones, B. M.; Urban, F. E.; Grosse, G.

Browse a selection of videos, audio clips, images, and more from a wide range of science topics covered by USGS!

"Science for a Changing World" - watch the short film here!

Documentary on walruses here!

Watch the first-ever footage of a polar bear on Arctic sea ice!

Join USGS geologists as they collect lava samples from Kilauea Volcano.

Watch researchers in the Arctic!

Filter Total Items: 989
Benthic invertebrates captured in a bottom trawl
December 31, 1969

Benthic invertebrates captured in a bottom trawl

Benthic invertebrates captured in a bottom trawl. This was from the Ecosystem Shifts in Arctic Seas project.

Saffron cod captured near Kaktovik Alaska
December 31, 1969

Saffron cod captured near Kaktovik Alaska

Saffron cod (Eleginus gracilis) captured near Kaktovik Alaska

One of two trawl winches on the  R/V Alaskan Gyre
December 31, 1969

One of two trawl winches on the R/V Alaskan Gyre

One of two trawl winches on the  R/V Alaskan Gyre

Repeat oblique photographs of Gulkana glaciers in Alaska.
December 31, 1967

Repeat oblique photographs of Gulkana glaciers in Alaska.

Repeat oblique photographs of Gulkana glaciers in Alaska.  1967, Unknown USGS photographer. 2016, L. Sass, USGS.

Repeat oblique photographs of Wolverine glacier in Alaska.
December 31, 1966

Repeat oblique photographs of Wolverine glacier in Alaska.

Repeat oblique photographs of Wolverine glacier in Alaska.  1966 image by unknown USGS photographer; 2015 image by L. Sass, USGS.

Photograph shows what remains of a building foundation in the foreground and a house in the background and up a slight elevation
December 31, 1964

Chenega Village after tsunami waves hit in 1964

Photograph taken in 1964 of the main part of the Chenega village site in Alaska. Pilings in the ground mark the former locations of homes swept away by tsunami waves. The schoolhouse on high ground was undamaged. Credit: Figure 6 from Plafker et al. (1969).

The Seward Highway at the head of Turnagain Arm near Anchorage after the M9.2 March 27, 1964 earthquake.
March 27, 1964

Snow plow theory

The Seward Highway at the head of Turnagain Arm near Anchorage after the quake.

Image: Muir and Riggs Glaciers, Muir Inlet, Alaska - 1950
August 4, 1950

Muir and Riggs Glaciers, Muir Inlet, Alaska - 1950

This, the first of two repeat photographs, documents significant changes that have occurred during the nine years between photographs A and B. Although Muir Glacier has retreated more than 3 kilometers and thinned more than 100 meters, exposing Muir Inlet, it remains connected with tributary Riggs Glacier. White Thunder Ridge remains devoid of vegetation. In places,

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Attribution: Region 11: Alaska
Image: Muir and Riggs Glaciers, Muir Inlet, Alaska - 1941
August 13, 1941

Muir and Riggs Glaciers, Muir Inlet, Alaska - 1941

This northeast-looking photograph, on the southeastern side of White Thunder Ridge ,shows the lower reaches of Muir Glacier, then a large tidewater calving valley glacier, and its tributary Riggs Glacier. The séracs in the lower right-hand corner of the photograph mark Muir Glacier’s terminus. The ice thickness is more than 700 meters. Muir Glacier had been retreating

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Attribution: Region 11: Alaska
Image: Katmai National Park and Preserve, Alaska
August 13, 1912

Katmai National Park and Preserve, Alaska

Volcanic ash drifts around houses at Katmai after the June 1912 eruption of Novarupta Volcano. Church in the distant background. August 13, 1912.

Attribution: Region 11: Alaska
This image shows the darkest pixel values captured during 10 minutes of video.

Unalakleet video camera 2 dark image

Two video cameras overlook the coast from atop a windmill tower in Unalakleet, Alaska where they look westward over Norton Sound. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes. Today’s most recent image from camera 2 is shown here. Please note that it takes 10 minutes for the images to be posted, once they are collected by

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Image: Exit Glacier, Alaska (In Full Retreat)

Exit Glacier, Alaska (In Full Retreat)

USGS ecologist Kevin Lafferty visits the Exit Glacier in Alaska.

Attribution: Region 11: Alaska

Stay up-to-date with what is happening in the Alaska Region by checking out our different social media accounts. You can also contact Alaska Regional Office staff or Center Directors for more information.