Unified Interior Regions
Region 11: Alaska
Alaska Science Center
4210 University Drive
Anchorage, AK 99508
Phone: (907) 786-7000
Volcano Science Center
4230 University Drive
Anchorage, AK 99508
Phone: (907) 786-7497
Climate Adaptation Science Center
4230 University Drive
Anchorage, AK 99508
Phone: 907-301-7830
Regions L2 Landing Page Tabs
A likelihood framework for joint estimation of salmon abundance and migratory timing using telemetric mark-recapture
Many fisheries for Pacific salmon Oncorhynchus spp. are actively managed to meet escapement goal objectives. In fisheries where the demand for surplus production is high, an extensive assessment program is needed to achieve the opposing objectives of allowing adequate escapement and fully exploiting the available surplus. Knowledge of...
Bromaghin, Jeffrey F.; Gates, Kenneth S.; Palmer, Douglas E. Are inland wolf-ungulate systems influenced by marine subsidies of Pacific salmon?
Wolves (Canis lupus) in North America are considered obligate predators of ungulates with other food resources playing little role in wolf population dynamics or wolf–prey relations. However, spawning Pacific salmon (Oncorhyncus spp.) are common throughout wolf range in northwestern North America and may provide a marine subsidy affecting inland...
Adams, Layne G.; Farley, Sean D.; Stricker, Craig A.; Demma, Dominic J.; Roffler, Gretchen H.; Miller, Dennis C.; Rye, Robert O. Complete mitochondrial genome of a Pleistocene jawbone unveils the origin of polar bear
The polar bear has become the flagship species in the climate-change discussion. However, little is known about how past climate impacted its evolution and persistence, given an extremely poor fossil record. Although it is undisputed from analyses of mitochondrial (mt) DNA that polar bears constitute a lineage within the genetic diversity of brown...
Lindqvist, Charlotte; Schuster, Stephan C.; Sun, Yazhou; Talbot, Sandra L.; Qi, Ji; Ratan, Aakrosh; Tomsho, Lynn P.; Kasson, Lindsay; Zeyl, Eve; Aars, Jon; Miller, Webb; Ingólfsson, Ólafur; Bachmann, Lutz; Wiig, Øystein Cytochrome P4501A biomarker indication of oil exposure in harlequin ducks up to 20 years after the Exxon Valdez oil spill
Hydrocarbon-inducible cytochrome P4501A (CYP1A) expression was measured, as ethoxyresorufin-O-deethylase (EROD) activity, in livers of wintering harlequin ducks (Histrionicus histrionicus) captured in areas of Prince William Sound, Alaska, USA, oiled by the 1989 Exxon Valdez spill and in birds from nearby unoiled areas, during 2005 to...
Esler, Daniel N.; Trust, Kimberly A.; Ballachey, Brenda E.; Iverson, Samuel A.; Lewis, Tyler L.; Rizzolo, Daniel; Mulcahy, Daniel M.; Miles, A. Keith; Woodin, Bruce R.; Stegeman, John J.; Henderson, John D.; Wilson, Barry W. Evaluation of a portable automated serum chemistry analyzer for field assessment of harlequin ducks, Histrionicus histrionicus
A portable analytical chemistry analyzer was used to make field assessments of wild harlequin ducks (Histrionicus histrionicus) in association with telemetry studies of winter survival in Prince William Sound, Alaska. We compared serum chemistry results obtained on-site with results from a traditional laboratory. Particular attention was paid to...
Stoskopf, Michael K.; Mulcahy, Daniel M.; Esler, Daniel N. Greenhouse gas mitigation can reduce sea-ice loss and increase polar bear persistence
On the basis of projected losses of their essential sea-ice habitats, a United States Geological Survey research team concluded in 2007 that two-thirds of the worlds polar bears (Ursus maritimus) could disappear by mid-century if business-as-usual greenhouse gas emissions continue. That projection, however, did not consider the possible benefits...
Amstrup, Steven C.; Deweaver, E.T.; Douglas, David C.; Marcot, B.G.; Durner, George M.; Bitz, C.M.; Bailey, D.A. Intercontinental reassortment and genomic variation of low pathogenic avian influenza viruses isolated from northern pintails (Anas acuta) in Alaska: examining the evidence through space and time
Migration and population genetic data for northern pintails (Anas acuta) and phylogenetic analysis of low pathogenic avian influenza (LPAI) viruses from this host in Alaska suggest that northern pintails are involved in ongoing intercontinental transmission of avian influenza. Here, we further refine this conclusion through phylogenetic analyses...
Ramey, Andrew M.; Pearce, John M.; Flint, Paul L.; Ip, Hon S.; Derksen, Dirk V.; Franson, J. Christian; Petrula, Michael J.; Scotton, Bradley D.; Sowl, Kristine M.; Wege, Michael L.; Trust, Kimberly A. Lake temperature and ice cover regimes in the Alaskan Subarctic and Arctic: Integrated monitoring, remote sensing, and modeling
Lake surface regimes are fundamental attributes of lake ecosystems and their interaction with the land and atmosphere. High latitudes may be particularly sensitive to climate change, however, adequate baselines for these lakes are often lacking. In this study, we couple monitoring, remote sensing, and modeling techniques to generate baseline...
Arp, C.D.; Jones, Benjamin M.; Whitman, Matthew; Larsen, A.; Urban, F.E. Limited evidence of trans-hemispheric movement of avian influenza viruses among contemporary North American shorebird isolates
Migratory routes of gulls, terns, and shorebirds (Charadriiformes) are known to cross hemispheric boundaries and intersect with outbreak areas of highly pathogenic avian influenza (HPAI). Prior assessments of low pathogenic avian influenza (LPAI) among species of this taxonomic order found some evidence for trans-hemispheric movement of virus...
Pearce, John M.; Ramey, Andrew M.; Ip, Hon S.; Gill, Robert E. Modeling fire severity in black spruce stands in the Alaskan boreal forest using spectral and non-spectral geospatial data
Biomass burning in the Alaskan interior is already a major disturbance and source of carbon emissions, and is likely to increase in response to the warming and drying predicted for the future climate. In addition to quantifying changes to the spatial and temporal patterns of burned areas, observing variations in severity is the key to studying the...
Barrett, Kirsten M.; Kasischke, E.S.; McGuire, A.D.; Turetsky, M.R.; Kane, E.S. Morbillivirus and Toxoplasma exposure and association with hematological parameters for southern Beaufort Sea polar bears: potential response to infectious agents in a sentinel species
Arctic temperatures are increasing in response to greenhouse gas forcing and polar bears have already responded to changing conditions. Declines in body stature and vital rates have been linked to warming-induced loss of sea-ice. As food webs change and human activities respond to a milder Arctic, exposure of polar bears and other arctic marine...
Kirk, Cassandra M.; Amstrup, Steven C.; Swor, Rhonda; Holcomb, Darce; O'Hara, Todd M. Population-level resource selection by sympatric brown and American black bears in Alaska
Distribution theory predicts that for two species living in sympatry, the subordinate species would be constrained from using the most suitable resources (e.g., habitat), resulting in its use of less suitable habitat and spatial segregation between species. We used negative binomial generalized linear mixed models with fixed effects to estimate...
Belant, Jerrold L.; Griffith, Brad; Zhang, Yingte; Follmann, Erich H.; Adams, Layne 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!
Sampling Stream Water in Denali National Park, Alaska
Ed Pfeifer of the USGS Southwest Geographic Science Team collecting water samples during field work for a study of Dall sheep habitat in Denali National Park, Alaska.
Unalakleet video camera 2 bright 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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Iliamna IVE
Camera is co-located with seismic station IVE 2.7 miles (3.5 km) to the east south-east of Iliamna. Read more about Iliamna volcano.
Unalakleet video camera 1 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 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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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.
Social Media
Locations
Alaska Climate Adaptation Science Center
Alaska Science Center
Phone: (907) 786-7000
Fax: (907) 786-7020
USGS Volcano Science Center
Phone: 360-993-8900
Alaska Volcano Observatory (AVO)
http://www.avo.alaska.edu/contact.php
Phone: 907-786-7497
Yellowstone Volcano Observatory (YVO)
yvowebteam@usgs.gov
Phone: 360-993-8906
USGS Cascades Volcano Observatory (CVO)
vhpweb@usgs.gov
Phone: 360-993-8900
Fax: 360-993-8980
USGS California Volcano Observatory (CalVO package delivery)
askcalvo@usgs.gov
Phone: 650-329-5083
Hawaiian Volcano Observatory
askHVO@usgs.gov
Phone: (808) 967-7328
Fax: (808) 967-8890
Anchorage Field Office - Water
Phone: 907-786-7000
Fairbanks Field Office - Water
Phone: 907-479-5645
Juneau Field Office - Water
Phone: 907-586-7216
