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: 2,397
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Year Published: 2017

Forecasting consequences of changing sea ice availability for Pacific walruses

The accelerating rate of anthropogenic alteration and disturbance of environments has increased the need for forecasting effects of environmental change on fish and wildlife populations. Models linking projections of environmental change with behavioral responses and bioenergetic effects can provide a basis for these forecasts. There is particular...

Udevitz, Mark S.; Jay, Chadwick V.; Taylor, Rebecca L.; Fischbach, Anthony S.; Beatty, William S.; Noren, Shawn R.
Udevitz, M.S., Jay, C.V., Taylor, R.L., Fischbach, A.S., Beatty, W.S., Noren, S.R., 2017, Forecasting consequences of changing sea ice availability for Pacific walruses: Ecosphere, vol. 8, no. 11 p. e02014. doi:10.1002/ecs2.2014

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Year Published: 2017

Genetic implications of bottleneck effects of differing severities on genetic diversity in naturally recovering populations: An example from Hawaiian coot and Hawaiian gallinule

The evolutionary trajectory of populations through time is influenced by the interplay of forces (biological, evolutionary, and anthropogenic) acting on the standing genetic variation. We used microsatellite and mitochondrial loci to examine the influence of population declines, of varying severity, on genetic diversity within two Hawaiian endemic...

Sonsthagen, Sarah A.; Wilson, Robert E.; Underwood, Jared G.
Sonsthagen, S.A., Wilson, R.E., and Underwood, J.G., 2017, Genetic implications of bottleneck effects of differing severities on genetic diversity in naturally recovering populations: An example from Hawaiian coot and Hawaiian gallinule: Ecology and Evolution, doi: 10.1002/ece3.3530

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Year Published: 2017

Genomics of Arctic cod

The Arctic cod (Boreogadus saida) is an abundant marine fish that plays a vital role in the marine food web. To better understand the population genetic structure and the role of natural selection acting on the maternally-inherited mitochondrial genome (mitogenome), a molecule often associated with adaptations to temperature, we analyzed genetic...

Wilson, Robert E.; Sage, George K.; Sonsthagen, Sarah A.; Gravley, Megan C.; Menning, Damian M.; Talbot, Sandra L.
Wilson, R.E, G.K. Sage, S.A. Sonsthagen, M.C. Gravley, D.M. Menning, and S.L. Talbot. 2017. Genomics of Arctic Cod. Anchorage, AK: US Dept. of the Interior, Bureau of Ocean Energy Management, Alaska OCS Region. OCS Study BOEM 2017-066. 92pp. https://www.boem.gov/Alaska-Reports-2017/

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Year Published: 2017

Normalized difference vegetation index as an estimator for abundance and quality of avian herbivore forage in arctic Alaska

Tools that can monitor biomass and nutritional quality of forage plants are needed to understand how arctic herbivores may respond to the rapidly changing environment at high latitudes. The Normalized Difference Vegetation Index (NDVI) has been widely used to assess changes in abundance and distribution of terrestrial vegetative communities....

Hogrefe, Kyle R.; Patil, Vijay P.; Ruthrauff, Daniel R.; Meixell, Brandt W.; Budde, Michael E.; Hupp, Jerry W.; Ward, David H.
Hogrefe, K. R., V. P. Patil, D. R. Ruthrauff, B. W. Meixell, M. E. Budde, J. W. Hupp, and D. H. Ward. 2017. Normalized difference vegetation index as an estimator for abundance and quality of avian herbivore forage in arctic Alaska. Remote Sensing 9(12):1234. doi:10.3390/rs9121234

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Year Published: 2017

Possible behavioural, energetic and demographic effects of displacement of red-throated divers

This report comprises the main points of discussion and agreement during a workshop, held in Edinburgh in May 2017, to discuss how displacement might affect individuals and the Red-throated diver population; with additional information added by the scientists following the workshop.

Dierschke, Volker; Furness, Robert W.; Gray, Carrie E.; Petersen, Ib Krag; Schmutz, Joel A.; Zydelis, Ramunas; Daunt, Francis
Dierschke, V., Furness, R.W., Gray, C.E., Petersen, I.K., Schmutz, J., Zydelis, R & Daunt, F., (2017), Possible Behavioural, Energetic and Demographic Effects of Displacement of Red-throated Divers, JNCC Report 605, ISSN 0963-8901

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Year Published: 2017

Vectors, hosts, and control measures for Zika virus in the Americas

We examine Zika virus (ZIKV) from an ecological perspective and with a focus on the Americas. We assess (1) the role of wildlife in ZIKV disease ecology, (2) how mosquito behavior and biology influence disease dynamics, and (3) how nontarget species and ecosystems may be impacted by vector control programs. Our review suggests that free-ranging,...

Thompson, Sarah J.; Pearce, John M.; Ramey, Andrew M.
Thompson, S. J., J. M. Pearce, and A. M. Ramey. 2017. Vectors, hosts, and control measures for Zika virus in the Americas. EcoHealth. 14(4):821-839 doi:10.1007/s10393-017-1277-2

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Year Published: 2017

Human-polar bear interactions in a changing Arctic: Existing and emerging concerns

The behavior and sociality of polar bears (Ursus maritimus) have been shaped by evolved preferences for sea ice habitat and preying on marine mammals. However, human behavior is causing changes to the Arctic marine ecosystem through the influence of greenhouse gas emissions that drive long-term change in ecosystem processes and via the presence of...

Atwood, Todd C.; Simac, Kristin S.; Breck, Stewart; York, Geoff; Wilder, James
Atwood, T.C., Simac, K., Breck, S.W., York, G., and Wilder, J., 2017, Human–polar bear interactions in a changing Arctic: Existing and emerging concerns: p. 397-418 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.), vol. 17, Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2

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Year Published: 2017

Implications of rapid environmental change for polar bear behavior and sociality

Historically, the Arctic sea ice has functioned as a structural barrier that has limited the nature and extent of interactions between humans and polar bears (Ursus maritimus). However, declining sea ice extent, brought about by global climate change, is increasing the potential for human-polar bear interactions. Loss of sea ice habitat is driving...

Atwood, Todd C.
Atwood, T.C., 2017, Implications of rapid environmental change for polar bear behavior and sociality: p. 445-462 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.). Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2

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Year Published: 2017

Monitoring the welfare of polar bear populations in a rapidly changing Arctic

Most programs for monitoring the welfare of wildlife populations support efforts aimed at reaching discrete management objectives, like mitigating conflict with humans. While such programs can be effective, their limited scope may preclude systemic evaluations needed for large-scale conservation initiatives, like the recovery of at-risk species....

Atwood, Todd C.; Duncan, Colleen G.; Patyk, Kelly A.; Sonsthagen, Sarah A.
Atwood, T.C., Duncan, C., Patyk, K.A., and Sonsthagen, S.A. , 2017, Monitoring the welfare of polar bear populations in a rapidly changing Arctic: Pages 503-529 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.), vol. 17, Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2

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Year Published: 2017

Polar bears, Ursus maritimus

Polar bears are the largest of the eight species of bears found worldwide and are covered in a pigment-free fur giving them the appearance of being white. They are the most carnivorous of bear species consuming a high-fat diet, primarily of ice-associated seals and other marine mammals. They range throughout the circumpolar Arctic to the...

Rode, Karyn D.; Stirling, Ian
Rode, K.D., and I. Stirling. 2017. Polar bears. In: Encyclopedia of Marine Mammals, 3rd edition. B. Wursig, J.G.M. Thewissen, and K. Kovacs (eds). Academic Press.

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Year Published: 2017

A swath across the great divide: Kelp forests across the Samalga Pass biogeographic break

Biogeographic breaks are often described as locations where a large number of species reach their geographic range limits. Samalga Pass, in the eastern Aleutian Archipelago, is a known biogeographic break for the spatial distribution of several species of offshore-pelagic communities, including numerous species of cold-water corals, zooplankton,...

Konar, Brenda H.; Edwards, Matthew S.; Bland, Aaron; Metzger, Jacob; Ravelo, Alexandra; Traiger, Sarah; Weitzman, Ben P.
Konar, Brenda & S. Edwards, Matthew & Bland, Aaron & Metzger, Jacob & Ravelo, Alexandra & Traiger, Sarah & Weitzman, Benjamin. (2017). A swath across the great divide: Kelp forests across the Samalga Pass biogeographic break. Continental Shelf Research. 143. . 10.1016/j.csr.2017.06.007.

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Year Published: 2017

Regionalizing indicators for marine ecosystems: Bering Sea–Aleutian Island seabirds, climate, and competitors

Seabirds are thought to be reliable, real-time indicators of forage fish availability and the climatic and biotic factors affecting pelagic food webs in marine ecosystems. In this study, we tested the hypothesis that temporal trends and interannual variability in seabird indicators reflect simultaneously occurring bottom-up (climatic) and...

Sydeman, William J.; Thompson, Sarah Ann; Piatt, John F.; García-Reyes, Marisol; Zador, Stephani; Williams, Jeffrey C.; Romano, Marc; Renner, Heather
William J. Sydeman, Sarah Ann Thompson, John F. Piatt, Marisol García-Reyes, Stephani Zador, Jeff C. Williams, Marc Romano, Heather M. Renner, Regionalizing indicators for marine ecosystems: Bering Sea–Aleutian Island seabirds, climate, and competitors, Ecological Indicators, Volume 78, July 2017, Pages 458-469.

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: 986
Common Murres in the water
July 23, 2016

Common Murres in the water

Large amount of Common Murres in the water 

Eklutna River traveling under two bridges
July 20, 2016

Eklutna River traveling under two bridges

Eklutna River traveling under two bridges

A male longspur songbird in short grass
July 18, 2016

Male Lapland Longspur in dwarf shrub mat habitat

Male Lapland Longspur in dwarf shrub mat habitat.  This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.

A bucket of the trawl catch of forage fish
July 17, 2016

Catch of forage fish from a trawl in Cook Inlet, Alaska

Catch of forage fish from a trawl in Cook Inlet, Alaska. Trawling was part of an assessment of abundance, distribution and species composition of forage fish in marine waters in lower Cook Inlet.

A Horned Puffin flying over the water
July 14, 2016

A Horned Puffin flying over the water

A Horned Puffin flying over the water

Horned Puffin, one of the species affected by a recent seabird die-off in the Pribilof Islands, AK
July 14, 2016

Horned Puffin, near Chisik Island in Lower Cook Inlet, Alaska

Horned Puffin, one of the species affected by a recent seabird die-off in the Pribilof Islands, AK. Near Chisik Island in Lower Cook Inlet, Alaska

Copper River bridge
July 14, 2016

Copper River bridge

Copper River bridge

A Horned Puffin flying over the water
July 14, 2016

A Horned Puffin flying

A Horned Puffin flying

Molybdenite mineral coating on a fractured surface in Tertiary granite north of Lake Clark
July 14, 2016

Molybdenite mineral coating on a fractured surface

Molybdenite mineral coating on a fractured surface in Tertiary granite north of Lake Clark

Geologists discuss big picture geology of Lake Clark National Park
July 9, 2016

Geologists discuss big picture geology of Lake Clark National Park

USGS research geologists Jamey Jones (left) and Erin Todd (right) discuss the "big picture" geology in their project area in and around Lake Clark National Park. Redoubt volcano in background left; baseball-sized cobbles on ground at researchers feet are pumice cobbles from the 2009(?) eruption of Redoubt volcano. 

Geologist collects sample with helicopter in background, Lake Clark
July 9, 2016

Geologist collects sample with helicopter in background, Lake Clark

Jamey Jones collects a sample of Talkeenta Formation volcaniclastic sandstone for detrital zircon geochronology. 

A scenic of Cabin Bay on Naked Island in Prince William Sound
July 7, 2016

Cabin Bay on Naked Island in Prince William Sound

A scenic of Cabin Bay on Naked Island in Prince William Sound

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.