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: 2,416
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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: 988
Clear day view of Redoubt Hut

Redoubt - Hut

Camera is located at AVO's Redoubt Hut, approximately 7.5 mi (12 km) from Redoubt's summit crater. This camera provides a view of the north flank of Redoubt. This camera is in a remote location and operates on battery power. We will set this camera to power on as much as batteries allow. Redoubt summit is approximately 10,200 ft above sea level.

When the camera is "

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Image: Alaska Volcano Observatory Monitoring Station

Alaska Volcano Observatory Monitoring Station

An Alaska Volcano Observatory Monitoring station with Peulik Volcano behind. This is the main repeater for the Peulik monitoring network located on Whale Mountain, Beecharaof National Wildlife Refuge.

Image: Geologic Studies on Sitkinak Island, Alaska

Geologic Studies on Sitkinak Island, Alaska

A tidal marsh bank exposed during low tide on Sitkinak Island, Alaska. The bank reveals ledges of alternating peat and silt. Abrupt uplift and subsidence during large megathrust earthquakes is interpreted to be the cause of the alternating layers.

View of a beach that's mostly mud with some dried grasses and rocks, shown at low tide with birds and ice in the water.

Unalakleet video camera 2 time exposure

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 time-exposure (timex) image from camera 2 is shown here. Please note that it takes 10 minutes for the images to be posted, once

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Clear day view of Augustine - Homer volcano

Augustine - Homer

The webcam is located in Homer, AK, approximately 120KM (75MI) north-east of Augustine volcano. Image interval is currently 5 minutes. Read more details about Augustine volcano.
 

Clear day view of Shishaldin volcano

Shishaldin Volcano

This camera is located on the south flank of Isanotski, and looks west-northwest to Shishaldin. Read more details about Shishaldin Volcano.

Image: Alaska Pipeline

Alaska Pipeline

Northslope of Alaska in May

This dark image shows changes in pixels in a video image over 10 minutes.

Unalakleet video camera 1 variance 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 1 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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Clear day view of Augustine - Mound volcano

Augustine - Island

The Augustine island webcam has been replaced with a new camera, and is now functioning. Read more details about Augustine volcano.
 

Clear day view of SpurrCKT

SpurrCKT Volcano

Camera is located at station CKT, and looks at Crater Peak and the Spurr summit behind. Read more details about SpurrCKT volcano.

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.