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: 2017

Best practices for assessing forage fish fisheries-seabird resource competition

Worldwide, in recent years capture fisheries targeting lower-trophic level forage fish and euphausiid crustaceans have been substantial (∼20 million metric tons [MT] annually). Landings of forage species are projected to increase in the future, and this harvest may affect marine ecosystems and predator-prey interactions by removal or...

Sydeman, William J.; Thompson, Sarah Ann; Anker-Nilssen, Tycho; Arimitsu, Mayumi L.; Bennison, Ashley; Bertrand, Sophie; Boersch-Supan, Philipp; Boyd, Charlotte; Bransome, Nicole C.; Crawford, Robert J.M.; Daunt, Francis; Furness, Robert W.; Gianuca, Dimas; Gladics, Amanda; Koehn, Laura; Lang, Jennifer W.; Loggerwell, Elizabeth; Morris, Taryn L.; Phillips, Elizabeth M.; Provencher, Jennifer; Punt, André E..; Saraux, Claire; Shannon, Lynne; Sherley, Richard B.; Simeone, Alejandro; Wanless, Ross M.; Wanless, Sarah; Zador, Stephani
Sydeman, W. J., Thompson, S.A., Anker-Nilssen, T., Arimitsu, M.L., Bennison, A., Bertrand, S., Boersch-Supan, P., Boyd, C., Bransome, N.C., Crawford, R.J.M., Daunt, F., Furness, R.W., Gianuca, D., Gladics, A., Koehn, L., Lang, J.W., Logerwell, E., Morris, T.L., Phillips, E.M., Provencher, J., Punt, A.E., Saraux, C., Shannon, L., Sherley, R.B., Simeone, A., Wanless, R.M., Wanless, S., and Zador, S.G., 2017, Best practices for assessing forage fish fisheries-seabird resource competition: Fisheries Research vol. 194, p. 209-221. doi:10.1016/j.fishres.2017.05.018

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Year Published: 2017

Harvesting wildlife affected by climate change: a modelling and management approach for polar bears

The conservation of many wildlife species requires understanding the demographic effects of climate change, including interactions between climate change and harvest, which can provide cultural, nutritional or economic value to humans.We present a demographic model that is based on the polar bear Ursus maritimus life cycle and includes...

Regehr, Eric V.; Wilson, Ryan R.; Rode, Karyn D.; Runge, Michael C.; Stern, Harry
Regehr, E. V., Wilson, R. R., Rode, K. D., Runge, M. C. and Stern, H. L. (2017), Harvesting wildlife affected by climate change: a modelling and management approach for polar bears. J Appl Ecol.

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Year Published: 2017

Surveillance for highly pathogenic influenza A viruses in California during 2014–2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway

We used surveillance data collected in California before, concurrent with, and subsequent to an outbreak of highly pathogenic (HP) clade 2.3.4.4 influenza A viruses (IAVs) in 2014–2015 to (i) evaluate IAV prevalence in waterfowl, (ii) assess the evidence for spill-over infections in marine mammals and (iii) genetically characterize low-pathogenic...

Ramey, Andrew M.; Hill, Nichola J.; Cline, Troy; Plancarte, Magdalena; De La Cruz, Susan; Casazza, Michael L.; Ackerman, Joshua T.; Fleskes, Joseph; Vickers, T. Winston; Reeves, Andrew B.; Gulland, Frances; Fontaine, Christine; Prosser, Diann J.; Runstadler, Jonathan; Boyce, Walter M.
Ramey, A. M., N. J. Hill, T. Cline, M. Plancarte, S. W. De La Cruz, M. L. Casazza, J. T. Ackerman, J. P. Fleskes, T. W. Vickers, A. B. Reeves, F. Gulland, C. Fontaine, D. J. Prosser, J. A. Runstadler, and W. M. Boyce. 2017. Surveillance for highly pathogenic influenza A viruses in California during 2014–2015 provides insights into viral evolutionary pathways and the spatiotemporal extent of viruses in the Pacific Americas Flyway. Emerging Microbes and Infections 6:e80. doi:10.1038/emi.2017.66

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Year Published: 2017

Glacial conditioning of stream position and flooding in the braid plain of the Exit Glacier foreland, Alaska

Flow spilling out of an active braid plain often signals the onset of channel migration or avulsion to previously occupied areas. In a recently deglaciated environment, distinguishing between shifts in active braid plain location, considered reversible by fluvial processes at short timescales, and more permanent glacier-...

Curran, Janet H.; Loso, Michael G.; Williams, Haley B.

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Year Published: 2017

Effects of surgically implanted transmitters on reproduction and survival in mallards

Abdominally implanted radiotransmitters have been widely used in studies of waterbird ecology; however, the longer handling times and invasiveness of surgical implantation raise important concerns about animal welfare and potential effects on data quality. Although it is difficult to assess effects of handling and marking wild animals by comparing...

Sheppard, Jennifer; Arnold, Todd W.; Amundson, Courtney L.; Klee, David
Sheppard, J. L., Arnold, T. W., Amundson, C. L. and Klee, D. (2017), Effects of surgically implanted transmitters on reproduction and survival in mallards. Wildl. Soc. Bull., 41: 597–604. doi:10.1002/wsb.809

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Year Published: 2017

Neotectonics of interior Alaska and the late Quaternary slip rate along the Denali fault system

The neotectonics of southern Alaska (USA) are characterized by a several hundred kilometers–wide zone of dextral transpressional that spans the Alaska Range. The Denali fault system is the largest active strike-slip fault system in interior Alaska, and it produced a Mw 7.9 earthquake in 2002. To evaluate the late Quaternary slip rate on the...

Haeussler, Peter J.; Matmon, Ari; Schwartz, David P.; Seitz, Gordon G.
Haeussler, P.J., Matmon, A., Schwartz, D.P., and Seitz, G.G., 2017, Neotectonics of interior Alaska and the late Quaternary slip rate along the Denali fault system: Geosphere, v. 13, no. 5, p. 1–19, doi:10.1130/GES01447.1.

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Year Published: 2017

QFASAR: Quantitative fatty acid signature analysis with R

Knowledge of predator diets provides essential insights into their ecology, yet diet estimation is challenging and remains an active area of research.Quantitative fatty acid signature analysis (QFASA) is a popular method of estimating diet composition that continues to be investigated and extended. However, software to implement QFASA has only...

Bromaghin, Jeffrey F.
Bromaghin, J. F. 2017. qfasar: quantitative fatty acid signature analysis with R. Methods in Ecology and Evolution 8(9):1158-1162.

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Year Published: 2017

A comment on “temporal variation in survival and recovery rates of lesser scaup”

Concerns about declines in the abundance of lesser scaup (Aythya affinis) have promoted a number of analyses to understand reasons for this decline. Unfortunately, most of these analyses, including that of Arnold et al. (2016 Journal of Wildlife Management 80: 850–861), are based on observational studies leading to weak inference. Although we...

Lindberg, Mark S.; Boomer, G. Scott; Schmutz, Joel A.; Walker, Johann A.
A comment on “temporal variation in survival and recovery rates of lesser scaup”

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Year Published: 2017

Comparison of acoustic recorders and field observers for monitoring tundra bird communities

Acoustic recorders can be useful for studying bird populations but their efficiency and accuracy should be assessed in pertinent ecological settings before use. We investigated the utility of an acoustic recorder for monitoring abundance of tundra‐breeding birds relative to point‐count surveys in northwestern Alaska, USA, during 2014. Our...

Vold, Skyler T.; Handel, Colleen M.; McNew, Lance B.
Vold, S. T., Handel, C. M. and McNew, L. B. (2017), Comparison of acoustic recorders and field observers for monitoring tundra bird communities. Wildl. Soc. Bull., 41: 566–576. doi:10.1002/wsb.785

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Year Published: 2017

Simultaneous estimation of diet composition and calibration coefficients with fatty acid signature data

Knowledge of animal diets provides essential insights into their life history and ecology, although diet estimation is challenging and remains an active area of research. Quantitative fatty acid signature analysis (QFASA) has become a popular method of estimating diet composition, especially for marine species. A primary assumption of QFASA is...

Bromaghin, Jeffrey F.; Budge, Suzanne M.; Thiemann, Gregory W.; Rode, Karyn D.
Bromaghin J. F., S. M. Budge, G. W. Thiemann, and K. D. Rode. 2017. Simultaneous estimation of diet composition and calibration coefficients with fatty acid signature data. Ecology and Evolution 7:6103-6113.

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Year Published: 2017

Polar bears and sea ice habitat change

The polar bear (Ursus maritimus) is an obligate apex predator of Arctic sea ice and as such can be affected by climate warming-induced changes in the extent and composition of pack ice and its impacts on their seal prey. Sea ice declines have negatively impacted some polar bear subpopulations through reduced energy input because of loss of hunting...

Butterworth, Andy; Durner, George M.; Atwood, Todd C.
Durner, G.M, and T.C. Atwood. 2017. Chapter 23 Polar bears and sea ice habitat change. Pages 419-443 in A. Butterworth (ed.) Marine Mammal Welfare - Human Induced Change in the Marine Environment and its Impact on Marine Mammal Welfare. Springer International Publishing, Switzerland. DOI 10.1007/978-3-319-46994-2.

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Year Published: 2017

Polar bears experience skeletal muscle atrophy in response to food deprivation and reduced activity in winter and summer

When reducing activity and using stored energy during seasonal food shortages, animals risk degradation of skeletal muscles, although some species avoid or minimize the resulting atrophy while experiencing these conditions during hibernation. Polar bears may be food deprived and relatively inactive during winter (when pregnant females hibernate...

Whiteman, John P.; Harlow, Henry J.; Durner, George M.; Regehr, Eric V.; Rourke, Bryan C.; Robles, Manuel; Amstrup, Steven C.; Ben-David, Merav
John P. Whiteman, Henry J. Harlow, George M. Durner, Eric V. Regehr, Bryan C. Rourke, Manuel Robles, Steven C. Amstrup and Merav Ben-David. 2017. Polar bears experience skeletal muscle atrophy in response to food deprivation and reduced activity in winter and summer. Conservation Physiology. Vol 5. doi:10.1093/conphys/cox049.

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
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

Three Arctic Terns sitting on a log in the water in Prince William Sound
July 6, 2016

Three Arctic Terns sitting on a log in Prince William Sound

Three Arctic Terns sitting on a log floating in the water in Prince William Sound.

Schools (shadows along the shore) of Pacific sand lance in Cabin Bay, Prince William Sound
July 6, 2016

Schools of Pacific sand lance in Cabin Bay, Prince William Sound

Schools (shadows along the shore) of Pacific sand lance in Cabin Bay, Prince William Sound

Kittlittz's Murrelet flying above the water in Cook Inlet, Alaska
July 4, 2016

Kittlittz's Murrelet flying above the water in Cook Inlet, Alaska

Kittlittz's Murrelet flying above the water in Cook Inlet, Alaska

Biologists catching forage fish with a cast net in Prince William Sound
July 2, 2016

Biologists with cast net caught forage fish in Prince William Sound

Brielle Heflin and Sarah Schoen catching forage fish with a cast net in Prince William Sound.

Black-legged Kittiwake captured 2 Pacific sand lance
July 1, 2016

Black-legged Kittiwake captured 2 Pacific sand lance

Black-legged Kittiwake captured 2 Pacific sand lance.

2 Black-legged Kittiwakes, one captured Pacific sand lance
July 1, 2016

Black-legged Kittiwakes foraging on Pacific sand lance

Black-legged Kittiwakes foraging on Pacific sand lance

Black-legged Kittiwake captured Pacific sand lance above the water
July 1, 2016

Black-legged Kittiwake foraging on Pacific sand lance

Black-legged Kittiwakes foraging on Pacific sand lance.

An owl perched on an old log
July 1, 2016

Short-eared Owl on the Seward Peninsula, Alaska

Short-eared Owl.  This photo was taken on the Seward Peninsula as part of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.

John Reed (USGS scientist) holding a gull marked with a satellite transmitter at the Soldotna landfill in June 2016
June 30, 2016

A gull marked with a satellite transmitter at the Soldotna landfill

John Reed (USGS scientist) holding a gull marked with a satellite transmitter at the Soldotna landfill in June 2016.

Gulls using beach at the mouth of Kenai River during the personal use dipnet fishery for sockeye salmon.
June 30, 2016

Kenai River during the personal use dipnet fishery for sockeye salmon.

Gulls using beach at the mouth of Kenai River during the personal use dipnet fishery for sockeye salmon; photo taken during sampling trip in July 2016.

A close up of a male Willow Ptarmigan
June 30, 2016

A male Willow Ptarmigan

A closeup of a male Willow Ptarmigan.

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.