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: 2,418
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Year Published: 2012

First description of autumn migration of Sooty Falcon Falco concolor from the United Arab Emirates to Madagascar using satellite telemetry

The movement and migration pattern of the 'Near Threatened' Sooty Falcon Falco concolor is poorly known. Sooty Falcons breed on the islands of the Arabian Gulf after arriving from their non-breeding areas that are mainly in Madagascar. In the first satellite tracking of the species we fitted a 9.5 g Argos solar powered transmitter on an adult...

Javed, Sàlim; Douglas, David C.; Khan, Shahid Noor; Nazeer Shah, Junid; Ali Al Hammadi, Abdullah
Javed, S., D. C. Douglas, S. Khan, J. N. Shah, and A. A. Al Hammadi. 2011. First description of autumn migration of Sooty Falcon Falco concolor from the United Arab Emirates to Madagascar using satellite telemetry. Bird Conservation International 22 (1): 106-119. doi:10.1017/S0959270911000189

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Year Published: 2012

Genetic diversity of a newly established population of golden eagles on the Channel Islands, California

Gene flow can have profound effects on the genetic diversity of a founding population depending on the number and relationship among colonizers and the duration of the colonization event. Here we used data from nuclear microsatellite and mitochondrial DNA control region loci to assess genetic diversity in golden eagles of the recently colonized...

Sonsthagen, Sarah A.; Coonan, Timothy J.; Latta, Brian C.; Sage, George K.; Talbot, Sandra L.
Genetic diversity of a newly established population of golden eagles on the Channel Islands, California; 2012; Article; Journal; Biological Conservation; Sonsthagen, Sarah A.; Coonan, Timothy J.; Latta, Brian C.; Sage, George K.; Talbot, Sandra L.

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Year Published: 2012

Microanatomy of passerine hard-cornified tissues: Beak and claw structure of the black-capped chickadee (Poecile atricapillus)

The microanatomy of healthy beaks and claws in passerine birds has not been well described in the literature, despite the importance of these structures in avian life. Histological processing of hard‐cornified tissues is notoriously challenging and only a few reports on effective techniques have been published. An emerging epizootic of beak...

Van Hemert, Caroline R.; Handel, Colleen M.; Blake, John E.; Swor, Rhonda; O'Hara, Todd M.
Van Hemert, C. R., C. M. Handel, J. E. Blake, R. M. Swor, and T. M. O'Hara. 2012. Microanatomy of Passerine hard-cornified tissues: beak and claw structure of the Black-capped Chickadee (Poecile atricapillus). Journal of Morphology 273(2):226-240. doi:10.1002/jmor.11023

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Year Published: 2012

Changing Arctic ecosystems--research to understand and project changes in marine and terrestrial ecosystems of the Arctic

Ecosystems and their wildlife communities are not static; they change and evolve over time due to numerous intrinsic and extrinsic factors. A period of rapid change is occurring in the Arctic for which our current understanding of potential ecosystem and wildlife responses is limited. Changes to the physical environment include warming...

Geiselman, Joy; DeGange, Anthony R.; Oakley, Karen; Derksen, Dirk V.; Whalen, Mary E.
Changing Arctic ecosystems--research to understand and project changes in marine and terrestrial ecosystems of the Arctic; 2012; FS; 2011-3136; Geiselman, Joy; DeGange, Tony; Oakley, Karen; Derksen, Dirk; Whalen, Mary

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Year Published: 2012

Cross-species amplification of microsatellite markers in the Great Horned Owl Bubo virginianus, Short-eared Owl Asio flammeus and Snowy Owl B. scandiacus for use in population genetics, individual identification and parentage studies

Using DNA from blood and feathers, we screened twenty-four microsatellite primer pairs initially developed for six strigid owls, and four primer pairs shown to be polymorphic across avian taxa, for their utility in Great Horned Owl (Bubo virginianus), Short-eared Owl (Asio flammeus), and Snowy Owl (Bubo scandiacus). Eight of these primers reliably...

Dial, Cody R.; Talbot, Sandra L.; Sage, George K.; Seidensticker, Mathew T.; Holt, Denver W.
Dial, C. R., S. L. Talbot, G. K. Sage, M. Seidensticker, and D. W. Holt. 2012. Cross-species amplification of microsatellite markers in the Great Horned Owl Bubo virginianus, Short-eared Owl Asio flammeus and Snowy Owl B. scandiacus for use in population genetics, individual identification and parentage studies. Yamashina Institute for Ornithology 44:1-12.

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Year Published: 2012

Long-term effects of the 'Exxon Valdez' oil spill: Sea otter foraging in the intertidal as a pathway of exposure to lingering oil

The protracted recovery of some bird and mammal populations in western Prince William Sound (WPWS), Alaska, and the persistence of spilled 'Exxon Valdez' oil in intertidal sediments, suggests a pathway of exposure to consumers that occupy nearshore habitats. To evaluate the hypothesis that sea otter (Enhydra lutris) foraging allows access to...

Bodkin, James L.; Ballachey, Brenda E.; Coletti, Heather A.; Esslinger, George G.; Kloecker, Kimberly A.; Rice, Stanley D.; Reed, John A.; Monson, Daniel H.
Bodkin, J. L., B. E. Ballachey, H. A. Coletti, G. G. Esslinger, K. A. Kloecker, S. D. Rice, J. A. Reed, and D. H. Monson. 2012. Long-term effects of the Exxon Valdez oil spill: Sea otter foraging in the intertidal as a pathway of exposure to lingering oil. Marine Ecology Progress Series 447:273-287. doi:10.3354/meps09523

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Year Published: 2012

A circumpolar monitoring framework for polar bears

Polar bears (Ursus maritimus) occupy remote regions that are characterized by harsh weather and limited access. Polar bear populations can only persist where temporal and spatial availability of sea ice provides adequate access to their marine mammal prey. Observed declines in sea ice availability will continue as long as greenhouse gas...

Vongraven, Dag; Aars, Jon; Amstrup, Steven C.; Atkinson, Stephen N.; Belikov, Stanislav; Born, Erik W.; DeBruyn, T.D.; Derocher, Andrew E.; Durner, George M.; Gill, Michael J.; Lunn, Nicholas J.; Obbard, Martyn E.; Omelak, Jack; Ovsyanikov, Nikita; Peacock, Elizabeth L.; Richardson, E.E.; Sahanatien, Vicki; Stirling, Ian; Wiig, Øystein
Vongraven, D., J. Aars, S. C. Amstrup, S. N. Atkinson, S. E. Belikov, E. W. Born, T. D. DeBruyn, A. E. Derocher, G. M. Durner, N. J. Lunn, M. E. Obbard, J. Omelak, N. Ovsyanikov, E. Peacock, E. S. Richardson, V. Sahanatien, I. Stirling, and Ø. Wiig. 2012. A circumpolar monitoring framework for polar bears. Ursus 23(sp2):1-66. doi:10.2192/URSUS-D-11-00026.1

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Year Published: 2012

Predation rates, timing, and predator composition for Scoters (Melanitta spp.) in marine habitats

Studies of declining populations of sea ducks have focused mainly on bottom-up processes with little emphasis on the role of predation. We identified 11 potential predators of White-winged Scoters (Melanitta fusca (L., 1758)) and Surf Scoters (Melanitta perspicillata (L., 1758)) in North American marine habitats. However, of 596 Scoters marked...

Anderson, Eric J.; Esler, Daniel N.; Sean, Boyd W.; Evenson, Joseph; Nysewander, David R.; Ward, David H.; Dickson, Rian D.; Uher-Koch, Brian D.; Vanstratt, C.S.; Hupp, Jerry W.
Anderson, E. M., D. Esler, W. S. Boyd, J. R. Evenson, D. R. Nysewander, D. H. Ward, R. D. Dickson, B. D. Uher-Koch, C. S. VanStratt, and J. W. Hupp. 2012. Predation rates, timing, and predator composition for scoters (Melanitta spp.) in marine habitats. Canadian Journal of Zoology 90(1):42-50. doi:10.1139/z11-110

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Year Published: 2012

Range overlap and individual movements during breeding season influence genetic relationships of caribou herds in south-central Alaska

North American caribou (Rangifer tarandus) herds commonly exhibit little nuclear genetic differentiation among adjacent herds, although available evidence supports strong demographic separation, even for herds with seasonal range overlap. During 1997–2003, we studied the Mentasta and Nelchina caribou herds in south-central Alaska using...

Roffler, Gretchen H.; Adams, Layne G.; Talbot, Sandra L.; Sage, George K.; Dale, Bruce W.
Range overlap and individual movements during breeding season influence genetic relationships of caribou herds in south-central Alaska; 2012; Article; Journal; Canadian Journal of Zoology; Roffler, Gretchen H.; Adams, Layne G.; Talbot, Sandra L.; Sage, George K.; Dale, Bruce W.

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Year Published: 2012

Diversity of nitrogen isotopes and protein status in caribou: implications for monitoring northern ungulates

Nutritional condition is an important determinant of productivity and survival in caribou (Rangifer tarandus). We used samples of excreta (n  =  1,150) to estimate diet composition from microhistology and 2 isotopic proxies of protein status for 2 ecotypes of caribou in 4 herds in late winter (2006–2008). Isotopes of nitrogen (δ15N in parts per...

Gustine, David D.; Barboza, Perry S.; Lawler, James P.; Adams, Layne G.; Parker, Kathy L.; Arthur, Steve M.; Shults, Brad S.
Diversity of nitrogen isotopes and protein status in caribou: implications for monitoring northern ungulates; 2012; Article; Journal; Journal of Mammalogy; Gustine, David D.; Barboza, Perry S.; Lawler, James P.; Adams, Layne G.; Parker, Kathy L.; Arthur, Steve M.; Shults, Brad S.

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Year Published: 2012

Small population size of Pribilof Rock Sandpipers confirmed through distance-sampling surveys in Alaska

The Rock Sandpiper (Calidris ptilocnemis) is endemic to the Bering Sea region and unique among shorebirds in the North Pacific for wintering at high latitudes. The nominate subspecies, the Pribilof Rock Sandpiper (C. p. ptilocnemis), breeds on four isolated islands in the Bering Sea and appears to spend the winter primarily in Cook Inlet, Alaska....

Ruthrauff, Daniel R.; Tibbitts, T. Lee; Gill, Robert E.; Dementyev, Maksim N.; Handel, Colleen M.
Ruthrauff, D. R., T. L. Tibbitts, R. E. Gill, Jr., M. N. Dementyev, and C. M. Handel. 2012. Small population size of Pribilof Rock Sandpipers confirmed through distance-sampling surveys in Alaska. Condor 114(3):544-551. DOI: 10.1525/cond.2012.110109

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Year Published: 2012

Assessment of pingo distribution and morphometry using an IfSAR derived digital surface model, western Arctic Coastal Plain, Northern Alaska

Pingos are circular to elongate ice-cored mounds that form by injection and freezing of pressurized water in near-surface permafrost. Here we use a digital surface model (DSM) derived from an airborne Interferometric Synthetic Aperture Radar (IfSAR) system to assess the distribution and morphometry of pingos within a 40,000 km2 area on...

Jones, Benjamin M.; Grosse, G.; Hinkel, Kenneth M.; Arp, C.D.; Walker, S.; Beck, R.A.; Galloway, J.P.
Assessment of pingo distribution and morphometry using an IfSAR derived digital surface model, western Arctic Coastal Plain, Northern Alaska; 2012; Article; Journal; Geomorphology; Jones, B. M.; Grosse, G.; Hinkel, K. M.; Arp, C. D.; Walker, S.; Beck, R. A.; Galloway, J. P.

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: 972
Biologist adjusts a fish wheel trap on the Yukon River
December 31, 1969

Randy Brown adjusts a fish wheel trap on the Yukon River

Randy Brown adjusts a fish wheel trap on the Yukon River that will catch Chinook salmon.

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

Jannelle Trowbridge sorts through benthic invertebrates for bivalves
December 31, 1969

Jannelle Trowbridge sorts through benthic invertebrates for bivalves

ANSEP intern Jannelle Trowbridge sorts through a catch of benthic invertebrates for bivalves on the Norseman II. This was from the Ecosystem Shifts in Arctic Seas project. 

Underwater photo of young of year Arctic cisco
December 31, 1969

Underwater photo of young of year Arctic cisco

Underwater photo of young of year Arctic cisco

2015 benthic field sampling team
December 31, 1969

2015 benthic field sampling team

The 2015 benthic field sampling team Jannelle Trowbridge, Vanessa von Biela, Carolynn Harris, and Thomas Nguyen. This was from the Ecosystem Shifts in Arctic Seas project.

Biologist with a Chinook salmon in a large net from a boat on the Yukon River
December 31, 1969

Vanessa von Biela with a Chinook salmon on the Yukon River

Vanessa von Biela with a Chinook salmon on the Yukon River.

Eroding coastline of the Beaufort Sea on Arey Island near Kaktovik
December 31, 1969

Beaufort Sea coastline on Arey Island with eroding cliff near Kaktovik

Eroding coastline of the Beaufort Sea on Arey Island near Kaktovik. 

Flock of birds over Arey Island near Kaktovik on the coastline of the Beaufort Sea
December 31, 1969

Beaufort Sea coastline on Arey Island with flock of birds

Flock of birds over Arey Island near Kaktovik on the coastline of the Beaufort Sea.

Bring in the mid-water trawl on the R/V Alaskan Gyre
December 31, 1969

Starting to bring in the mid-water trawl on the R/V Alaskan Gyre

Bring in the mid-water trawl on the R/V Alaskan Gyre

Biologists sorting through buckets of benthic invertebrates looking for bivalves onboard the Norseman II in the Chukchi Sea
December 31, 1969

Biologists sorting through benthic invertebrates for bivalves

Biologists sorting through buckets of benthic invertebrates looking for bivalves onboard the Norseman II in the Chukchi Sea.

Sea ice in the Chukchi Sea
December 31, 1969

Chukchi Sea sea ice

Sea ice in the Chukchi Sea.

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.