Unified Interior Regions

Alaska

States L2 Landing Page Tabs

Filter Total Items: 195
Alaska Landbird Monitoring Survey emblem
Date Published: September 21, 2018
Status: Active

Alaska Landbird Monitoring Survey

Alaska provides breeding habitats for 135 species of landbirds, half of which breed predominantly north of the U.S.-Canada border. The road-based North American Breeding Bird Survey (BBS) provides some data on population trends in Alaska but most northern species are inadequately monitored because of a paucity of roads. Boreal Partners in Flight thus developed the Alaska Landbird Monitoring...

Small yellow bird on a bush
Date Published: September 18, 2018
Status: Active

Festivals Celebrating Birds in Alaska

Here are a few festivals celebrating birds around the state of Alaska.

Small bird in a bush
Date Published: September 17, 2018
Status: Active

Meeting and Project Summaries for Boreal Partners in Flight

Information on topics discussed by Boreal Partners in Flight (BPIF) working groups organized by year.

A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is
Date Published: August 21, 2018
Status: Active

Background of Beak Deformity Research

Large numbers of Black-capped Chickadees with abnormal beaks were reported in south-central Alaska in the late 1990s.  More recently, similar beak deformities have appeared in other species throughout the state. At least 30 Alaskan bird species are affected and the geographic extent of the problem appears to be growing.  In addition to Alaskan observations, we have received increasing numbers...

John Reed (USGS scientist) holding a gull marked with a satellite transmitter at the Soldotna landfill in June 2016
Date Published: August 21, 2018
Status: Active

Antibiotic Resistant Bacteria in Migratory Birds

Migratory birds, and particularly those using habitats close to human settlements, may be infected with antibiotic resistant bacteria.  The USGS is working with public health professionals to understand the role of birds in the maintenance and dispersal of antibiotic resistant bacteria.  Additionally, the USGS is investigating how antibiotic resistant bacteria in birds may relate to public and...

A solitary tree trunk stands amongst the devastation of the 2011 fire in Great Dismal Swamp, VA.
Date Published: August 20, 2018
Status: Active

Wetlands in the Quaternary Project

Wetlands accumulate organic-rich sediment or peat stratigraphically, making them great archives of past environmental change. Wetlands also act as hydrologic buffers on the landscape and are important to global biogeochemical cycling. This project uses wetland archives from a range of environments to better understand how vegetation, hydrology, and hydroclimate has changed on decadal to multi-...

A Black-capped Chickadee with a beak that has grown long and curved down
Date Published: August 20, 2018
Status: Active

Species Affected by Beak Deformities

At least 30 Alaskan bird species are affected and the geographic extent of the problem appears to be growing.  In addition to Alaskan observations, we have received increasing numbers of reports from other parts of North America and Europe.

Small bird with a crossed beak on a branch
Date Published: August 19, 2018
Status: Active

Physical Description of Beak Deformities

The most commonly observed physical abnormalities among Alaskan birds are overgrown or crossed beaks.  The severity of the deformities varies, ranging from a nearly indiscernible “overbite” to beaks that are more than double their normal length.  The upper and lower parts of the beak are also frequently crossed or gapped.

A small bird in a tree with a really curved beak
Date Published: August 18, 2018
Status: Active

Prevalence, Distribution and Timing of Beak Deformities in Birds

The rates of beak deformities documented in Black-capped Chickadees and Northwestern Crows in Alaska are the highest ever recorded within a wild bird population anywhere.

Small bird with long beak
Date Published: August 17, 2018
Status: Active

Beak Deformity's Effects on Birds

Birds with beak deformities often have difficulty foraging and preening, and may not be able to keep themselves warm and well-fed during cold winter months.  Although some birds with beak deformities breed successfully, they typically encounter more challenges than normal birds.

A little gray bird
Date Published: August 16, 2018
Status: Active

Possible Causes for Beak Deformities

Beak deformities can be caused by a variety of factors, including contaminants, nutritional deficiencies, disease, parasites, blunt trauma, or genetic abnormalities. We recently identified a novel picornavirus (Poecivirus) in Black-capped Chickadees with avian keratin disorder (AKD). Our results suggest that Poecivirus is the most likely factor responsible for beak deformities in Alaskan birds...

A Black-capped Chickadee with a beak that has grown long and crossed
Date Published: August 15, 2018
Status: Active

Literature Cited for Beak Deformities

Literature Cited in the Beak Deformity web pages

Filter Total Items: 152
placeholder for data files
June 20, 2019

This data set is four tables with: 1) the body condition and egg counts of Sockeye Salmon captured at several sites along the Pilgrim River 2013-2016, 2) water temperature from 10 automated temperature dataloggers during the summers of 2013-2016, 3) results from an experiment to determine the effect of elevated water temperature on levels of Heat Shock Protein (HSP70) in captive j

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June 18, 2019

This data set contains three spreadsheets with results of Influenza A Virus (IAV) screening in blood from Pacific, Red-throated, and Yellow-billed Loons at three locations in Alaska. Loons were captured along the Beaufort Sea Coast, Chukchi Sea Coast, and Yukon-Kuskokwim Delta from 2008-2017. Three different tests were used and the results are presented in separate spreadsheets. All s

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June 17, 2019

This data set consists of two tables associated with a study of Haemosporidian parasite infection in Northwestern Crows (Corvus caurinus) sampled at six locations throughout southcentral and southeast Alaska in 2007-2008. The first table contains species, location, banding, and morphometric data for all samples. The second table contains results from heamosporidian parasite screening of

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June 14, 2019

This data set includes information on collections of fecal samples from wild gulls (Larus spp.) at seven locations in Alaska, USA. Samples were screened for carbapenemase producing Escherichia coli (E. coli) and tested for resistance to multiple antibiotics.

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June 14, 2019

This data set includes two tables associated with a study of Plasmodium parasite infection in mosquitoes collected in south-central Alaska during the summer of 2016. The first table contains data regarding mosquito collection from three sites using CO2 baited CDC light traps. Mosquitoes were sorted and pooled according to collection date, genus, and location and subsequently screened for Plas

National Petroleum Reserve-Alaska Seismic Legacy Data Archive
April 28, 2019

The National Petroleum Reserve, Alaska, (NPRA) Legacy Data Archive represents one of the largest geological and geophysical data sets held by the U.S. Geological Survey.  Two exploration programs by the U.S. Navy and USGS collected over 12,000 line miles of seismic data and drilled 28 wells.  These programs generated a vast amount of data, analyses, and documents, much of which is presented here.

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April 22, 2019

This data release contains a mark-resight encounter history table for Pacific and Yellow-billed loons from the Arctic Coastal Plain in northern Alaska, 2011-2014.

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April 22, 2019

This data set contains a description of 3 mitochondrial DNA and 93 nuclear DNA Single Nucleotide Polymorphism (SNP) loci and sequence information developed through double digest restriction-site associated DNA sequencing (ddRADseq) techniques for Greater White-Fronted Goose (Anser albifrons) that winter in California.

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April 4, 2019

This data set includes information on collections of fecal or cloacal samples from wild gulls (Larus spp.) at four locations on the Kenai Peninsula, Alaska, USA. Samples were also collected from sockeye salmon harvested as part of the personal-use fisheries on the Kenai and Kasilof Rivers. Samples were screened for Escherichia coli (E. coli) and tested for resistance to multiple antib

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March 26, 2019

This dataset contains two tables of sampling information and size and mass measurements of the Baltic Tellin (Macoma balthica) from sites in Cook Inlet, Alaska, USA, and the Baie de Somme estuary, France.

Map of land and ocean showing lines where data were collected in the ocean.
March 25, 2019

High-resolution acoustic backscatter data, bathymetry data, single channel minisparker seismic-reflection data were collected by the U.S. Geological Survey (USGS) and the Alaska Department of Fish and Game in May of 2014 southwest of Chenega Island and southwest of Montague Island, Alaska. Data were collected aboard the Alaska Department of Fish and Game vessel, R/V Solstice.

Filter Total Items: 114
Publication Thumbnail
Year Published: 2010

The changing effects of Alaska’s boreal forests on the climate system

In the boreal forests of Alaska, recent changes in climate have influenced the exchange of trace gases, water, and energy between these forests and the atmosphere. These changes in the structure and function of boreal forests can then feed back to impact regional and global climates. In this manuscript, we examine the type and magnitude of the...

Euskirchen, E.S.; McGuire, A. David; Chapin, F.S.; Rupp, T.S.

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Year Published: 2010

Abdominally implanted transmitters with percutaneous antennas affect the dive performance of Common Eiders

Implanted transmitters have become an important tool for studying the ecology of sea ducks, but their effects remain largely undocumented. To address this, we assessed how abdominally implanted transmitters with percutaneous antennas affect the vertical dive speeds, stroke frequencies, bottom time, and dive duration of captive Common Eiders (...

Powell, Abby N.; Latty, Christopher J.; Hollmén, Tuula E.; Petersen, Margaret R.; Andrews, Russel D.

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Year Published: 2010

Logs and Geologic Data from a Paleoseismic Investigation of the Susitna Glacier fault, Central Alaska Range, Alaska

This report contains field and laboratory data from a paleoseismic study of the Susitna Glacier fault, Alaska. The initial M 7.2 subevent of the November 3, 2002, M 7.9 Denali fault earthquake sequence produced a 48-km-long set of complex fault scarps, folds, and aligned landslides on the previously unknown, north-dipping Susitna Glacier thrust...

Personius, Stephen F.; Crone, Anthony J.; Burns, Patricia A.C.; Beget, James E.; Seitz, Gordon G.; Bemis, Sean P.
Logs and Geologic Data from a Paleoseismic Investigation of the Susitna Glacier fault, Central Alaska Range, Alaska; 2010; SIM; 3114; Personius, Stephen F.; Crone, Anthony J.; Burns, Patricia A.; Beget, James E.; Seitz, Gordon G.; Bemis, Sean P.

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Year Published: 2010

Headwater streams and forest management: does ecoregional context influence logging effects on benthic communities?

Effects of forest management on stream communities have been widely documented, but the role that climate plays in the disturbance outcomes is not understood. In order to determine whether the effect of disturbance from forest management on headwater stream communities varies by climate, we evaluated benthic macroinvertebrate communities in 24...

Medhurst, R. Bruce; Wipfli, Mark S.; Binckley, Chris; Polivka, Karl; Hessburg, Paul F.; Salter, R. Brion
Headwater streams and forest management: Does ecoregional context influence logging effects on benthic communities?; 2010; Article; Journal; Hydrobiologia; Medhurst, R. B.; Wipfli, M. S.; Binckley, C.; Polivka, K.; Hessburg, P. F.; Salter, R. B.

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Year Published: 2010

Linking ecosystems, food webs, and fish production: subsidies in salmonid watersheds

Physical characteristics of riverine habitats, such as large wood abundance, pool geometry and abundance, riparian vegetation cover, and surface flow conditions, have traditionally been thought to constrain fish production in these ecosystems. Conversely, the role of food resources (quantity and quality) in controlling fish production has received...

Wipfli, Mark S.; Baxter, Colden V.
Linking ecosystems, food webs, and fish production: Subsidies in salmonid watersheds; 2010; Article; Journal; Fisheries; Wipfli, M. S.; Baxter, C. V.

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Year Published: 2009

Nitrogen attenuation of terrestrial carbon cycle response to global environmental factors

Nitrogen cycle dynamics have the capacity to attenuate the magnitude of global terrestrial carbon sinks and sources driven by CO2 fertilization and changes in climate. In this study, two versions of the terrestrial carbon and nitrogen cycle components of the Integrated Science Assessment Model (ISAM) are used to evaluate how variation in nitrogen...

Jain, A.A.; Yang, Xiaojuan; Kheshgi, H.; McGuire, A. David; Post, W.; Kicklighter, David W.

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Year Published: 2009

Projected changes in atmospheric heating due to changes in fire disturbance and the snow season in the western Arctic, 2003–2100

In high latitudes, changes in climate impact fire regimes and snow cover duration, altering the surface albedo and the heating of the regional atmosphere. In the western Arctic, under four scenarios of future climate change and future fire regimes (2003–2100), we examined changes in surface albedo and the related changes in regional...

Euskirchen, E.S.; McGuire, A. David; Rupp, T.S.; Chapin, F. S.; Walsh, J.E.

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Year Published: 2009

Maps Showing Seismic Landslide Hazards in Anchorage, Alaska

The devastating landslides that accompanied the great 1964 Alaska earthquake showed that seismically triggered landslides are one of the greatest geologic hazards in Anchorage. Maps quantifying seismic landslide hazards are therefore important for planning, zoning, and emergency-response preparation. The accompanying maps portray seismic landslide...

Jibson, Randall W.; Michael, John A.
Maps Showing Seismic Landslide Hazards in Anchorage, Alaska; 2009; SIM; 3077; Jibson, Randall W.; Michael, John A.

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Year Published: 2009

Does winter region affect spring arrival time and body mass of king eiders in northern Alaska?

Events during the non-breeding season may affect the body condition of migratory birds and influence performance during the following breeding season. Migratory birds nesting in the Arctic often rely on endogenous nutrients for reproductive efforts, and are thus potentially subject to such carry-over effects. We tested whether king eider (...

Powell, Abby N.; Oppel, Steffen

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Year Published: 2008

Challenges in making a seismic hazard map for Alaska and the Aleutians

We present a summary of the data and analyses leading to the revision of the time-independent probabilistic seismic hazard maps of Alaska and the Aleutians. These maps represent a revision of existing maps based on newly obtained data, and reflect best current judgments about methodology and approach. They have been prepared following the...

Freymueller, J.T.; Wesson, R.L.; Boyd, O.S.; Mueller, C.S.; Frankel, A.D.
Challenges in making a seismic hazard map for Alaska and the Aleutians; 2008; Article; Journal; Geophysical Monograph Series: Active Tectonics and Seismic Potential of Alaska; Wesson, R. L.; Boyd, O. S.; Mueller, C. S.; Frankel, A. D.

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Year Published: 2007

Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project

The Pogo lode gold deposit was discovered in eastern Alaska in the early 1990s and provided the opportunity to study elemental distribution and mobility in the natural environment prior to mine development. Studying mineralized systems prior to mining allows us to compare the natural biogeochemical signature in mineralized versus...

Wang, Bronwen; Gough, Larry P.; Wanty, Richard B.; Crock, James G.; Lee, Gregory K.; Day, Warren C.; Vohden, Jim
Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project; 2007; SIR; 2007-5289-H; Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289); Wang, Bronwen; Gough, Larry P.; Wanty, Richard B.; Crock, James G.; Lee, Gregory K.; Day, Warren C.; Vohden, Jim

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Year Published: 2007

Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon: Chapter A in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project

More than 50 million ounces of lode gold resources have been defined in the previous 15 years throughout accreted terranes of interior Alaska and in adjacent continental margin rocks of Yukon. The major deposits in this so-called Tintina Gold Province formed around 105 to 90 million years ago in east-central Alaska and Yukon, and around 70...

Gough, Larry P.; Day, Warren C.; Goldfarb, Richard J.; Marsh, Erin E.; Hart, Craig J.R.; Mair, John L.; Miller, Marti L.; Johnson, Craig
Geology and origin of epigenetic lode gold deposits, Tintina Gold Province, Alaska and Yukon: Chapter A in Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project; 2007; SIR; 2007-5289-A; Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289); Goldfarb, Richard J.; Marsh, Erin E.; Hart, Craig J.R.; Mair, John L.; Miller, Marti L.; Johnson, Craig

Filter Total Items: 1,072
Pacific walruses hauled out on beach, Alaska
September 2, 2019

Pacific walruses hauled out on beach, Chukchi Sea, Alaska

Pacific walruses hauled out on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses in water jousting with their tusks, Alaska
August 30, 2019

Pacific walruses in water jousting with their tusks, Alaska

Pacific walruses jousting with their tusks on the eastern shore of the Chukchi Sea, Alaska  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses on beach and in water, Alaska
August 30, 2019

Pacific walruses on beach and in water, Chukchi Sea, Alaska

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

USGS wildlife biologist, piloting an unmanned aerial system (UAS)
August 30, 2019

USGS wildlife biologist piloting an UAS for use in walrus survey

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

USGS biologist piloting an UAS for Pacific walrus survey, Alaska
August 30, 2019

USGS biologist piloting an UAS for Pacific walrus survey, Alaska

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Short-tailed Shearwater carcasses on beach in Bristol Bay, Alaska
August 26, 2019

Short-tailed Shearwater carcasses and debris on beach in Alaska

Short-tailed Shearwater die-off in the Bering Sea. Emaciated Short-tailed Shearwater carcasses littered the beaches of Bristol Bay during the summer of 2019

Young male Pacific walrus on beach along the Chukchi Sea
August 21, 2019

Young male Pacific walrus on beach of eastern shore of the Chukchi Sea

A young male Pacific walrus moving up the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

A young male Pacific walrus resting along shoreline of the Chukchi Sea
August 21, 2019

Young male Pacific walrus resting on beach, Chukchi Sea, Alaska

A young male Pacific walrus resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

adult female Pacific walrus resting on the beach, Chukchi Sea, Alaska
August 21, 2019

Adult female Pacific walrus resting on beach, Chukchi Sea, Alaska

An adult female Pacific walrus resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

August 18, 2019

Time-lapse video of bluff erosion on Barter Island, Alaska

Recorded June 1, 2019 - August 18, 2019: Video shows a series of photos taken every hour during daylight hours in the summer of 2019. The camera looks westward along the coastal bluffs of Barter Island, located on Alaska’s North Slope. A pole on the bluff, visible in the first half of the video, once supported another video camera that was aimed at the

Measuring temperature and dissolved oxygen in impounded water of beaver dam on the Wrench Creek, Noatak National Preserve
August 17, 2019

Measuring temperature and dissolved oxygen in impounded water

Measuring temperature and dissolved oxygen in impounded water of beaver dam on the Wrench Creek, Noatak National Preserve.

 

Arctic grayling (Thymallus arcticus) and Dolly varden (Salvelinus malma)  from impounded water of beaver dam on the Wrench Creek
August 17, 2019

Arctic grayling and Dolly varden from impounded water of beaver dam

Arctic grayling (Thymallus arcticus) and Dolly varden (Salvelinus malma)  from impounded water of beaver dam on the Wrench Creek, Noatak National Preserve. 

Filter Total Items: 260
USGS
July 7, 2016

Alaska is a major producer of base and precious metals and has a high potential for additional undiscovered mineral resources. However, discovery is hindered by Alaska’s vast size, remoteness and rugged terrain. New methods are needed to overcome these obstacles in order to evaluate Alaska’s geology and mineral resource potential.

Female and her cub-of-the-year
June 29, 2016

“The scenarios predicted by our models are encouraging in that there are clear actions that humans can take to improve the chances that healthy polar bear populations persist in the future.” - Todd Atwood, USGS

Painting - Denali in Midsummer
June 21, 2016

The U.S. Geological Survey has produced a new compilation of landscape-scale sediment and soil geochemical data for Alaska. This was last completed nearly 40 years ago in 1978, but the new effort uses modern modeling and analysis techniques to map 68 elements across a newly developed and updated geochemical atlas of Alaska.

USGS study of fires and waterfowl surveys in the western boreal forest of North America. 
June 21, 2016

“These results suggest that waterfowl populations in the western boreal forest are resilient to forest fires and that current policies of limited fire suppression have not been detrimental to waterfowl populations." – Tyler Lewis, U.S. Geological Survey.

Permafrost area, Beaver Creek, Alaska.
June 20, 2016

The thawing of the planet’s permafrost is replumbing arctic environments, creating several hydrologic consequences and possibly some opportunities according to a new study published in Vadose Zone.

Tyndall Glacier, Alaska
June 14, 2016

On October 17, 2015, a rain-soaked mountainside slid into Taan Fiord on Icy Bay, sending a giant wave more than 500 feet up the opposite slope.

Scientist laying cable in a field
June 1, 2016

Fate of Alaska's large carbon reserves could affect greenhouse gas concentration.

satellite image of brown resuspended volcanic ash cloud over Kodiak Island, Alaska
April 25, 2016

Two public events are scheduled next week in the City of Kodiak, Alaska about monitoring old volcanic ash resuspended by high winds. Scientists invite the local community to learn more about the potential impacts of resuspended volcanic ash and how to assist in volcano hazards research by collecting samples of the redistributed volcanic ash and dust.

USGS
April 20, 2016

You really are what you eat. That’s the taking-off point for a new polar bear study, conducted by U.S. Geological Survey researchers with an assist from the Oregon Zoo — and published this week in the journal Physiological and Biochemical Zoology. 

collage of scientists conducting science related to each mission are
April 5, 2016

ANCHORAGE, Alaska — The U.S. Geological Survey released additional evidence that western Alaska remains a hot spot for avian influenza to enter North America.