Alaska Science Center Ecosystems data releases are grouped by topic: Terrestrial Ecosystems, Aquatic Ecosystems, Wildlife Health and Genetics, Environmental Health and eDNA, Habitat and Landscape Change, and Ecosystem Analytics.
Return to Ecosystems or ASC Data Releases
Terrestrial Ecosystems | Aquatic Ecosystems | Wildlife Health and Genetics | Environmental Health and eDNA | Habitat and Landscape Change | Ecosystem Analytics
View by subject area:
Birds - Loons | Waterfowl | Shorebirds | Seabirds | Landbirds
Mammals - Caribou | Polar Bears | Walruses | Sea Otters
Fish - Marine and Freshwater Fish | Forage Fish
Landscape - Nearshore Marine | Eelgrass | Rusting Rivers
Genetics and Disease - Molecular Ecology Laboratory | Wildlife Disease
Quantitative Support - Ecosystem Analytics
View by collection:
ASC Wildlife Tracking Data Collection
Terrestrial Ecosystems
Terrestrial Ecosystems
Filter Total Items: 87
Tracking Data for Black Brant (Branta bernicla nigricans) Tracking Data for Black Brant (Branta bernicla nigricans)
This data release includes 1 child item with tracking data for Black Brant, a goose species that breeds in coastal areas of Alaska, northwestern Canada, and northeastern Russia and winters along coastal areas of North America from western Alaska to Mexico. Child Item 1: "Light-Level Geolocator Tracking Data for Black Brant (Branta bernicla nigricans)" -- Tracking data collected from...
Alaska Landbird Monitoring Survey Dataset Alaska Landbird Monitoring Survey Dataset
Boreal Partners in Flight developed the Alaska Landbird Monitoring Survey (ALMS) primarily to monitor breeding populations of landbirds in the vast off-road areas of Alaska in conjunction with data collected from the roadside North American Breeding Bird Survey (BBS). ALMS is a collaborative program in which agencies and other entities conduct standardized surveys of breeding birds and...
U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes) U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes)
This data package contains location data collected by the Argos System (CLS America, Inc.) from satellite transmitters attached to 116 Lesser Yellowlegs captured at multiple sites across their breeding and nonbreeding range in North America, 2018-2021. The raw data were processed to accomplish two goals: 1) flag implausible location and 2) remove locations within Joint Base Elmendorf...
GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Fortymile Herd, Alaska, 1998-1999 GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Fortymile Herd, Alaska, 1998-1999
These data were part of a pilot tracking study of three adult female caribou from the Fortymile Herd in Alaska. The dataset is comprised of two comma separated values (.csv) files. Data includes: 1) processed (i.e., erroneous locations removed) GPS locations for caribou, received once per hour for 6 months (October 1998 to April 1999), and 2) spatial, temporal, and biological attributes...
Tracking Data for Long-billed Curlews (Numenius americanus) Tracking Data for Long-billed Curlews (Numenius americanus)
This data release includes 2 child items with tracking data for Long-billed Curlews, a shorebird species that nests in deserts and grasslands of central and western North America and spends the nonbreeding season in agriculture fields and pastures or along coastlines in California, Texas, and Mexico. Child Item 1: "Argos Satellite Tracking Data for Long-billed Curlews (Numenius...
Movement Data for Migrating Geese Over the Northeast Pacific Ocean, 2018-2021 Movement Data for Migrating Geese Over the Northeast Pacific Ocean, 2018-2021
This dataset consists of one table with a record (row) for each goose location and columns containing location information and covariates. The dataset was used in an analysis of altitude selection and flight propensity in an accompanying paper (Weiser et al. 2024) and is being provided here to allow replication of that analysis. Goose locations (latitude, longitude, and altitude) were...
Data from the Inventory of Montane-nesting Birds in the Arctic Network of National Parks, Alaska Data from the Inventory of Montane-nesting Birds in the Arctic Network of National Parks, Alaska
This package contains information collected during avian and habitat survey data at five national parks/monuments: Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, Noatak National Preserve, and Bering Land Bridge National Preserve. The objectives of the surveys were to document the occurrence of 90 percent of the bird species...
Tracking Data for Bar-tailed Godwits (Limosa lapponica) Tracking Data for Bar-tailed Godwits (Limosa lapponica)
This data release includes 2 child items with tracking data for Bar-tailed Godwits. One of the subspecies, Limosa lapponica baueri, nests in Alaska and spends the nonbreeding season in New Zealand and eastern Australia whereas L.l.menzbieri nests in Siberia and spends the nonbreeding season in western Australia. Child Item 1: "Argos Satellite Tracking Data for Bar-tailed Godwits (Limosa...
Tracking Data for Buff-breasted Sandpipers (Calidris subruficollis) Tracking Data for Buff-breasted Sandpipers (Calidris subruficollis)
This data package includes 2 child items with tracking data for Buff-breasted Sandpipers, a shorebird species that breeds only in Arctic Alaska and Canada, spending the winter in the grasslands of Brazil, Uruguay, and Argentina after a lengthy migration. Child Item 1: "Argos and GPS Satellite Tracking Data for Buff-breasted Sandpipers (Calidris subruficollis) - Processed Data" - Quality
Data from the Inventory of Montane-nesting Birds in the Aniakchak National Monument and Preserve, Alaska Data from the Inventory of Montane-nesting Birds in the Aniakchak National Monument and Preserve, Alaska
This data package contains six tables: 1) characteristics of bird survey sites, 2) vegetation classification at survey sites, 3) detections of all birds at survey sites, 4) behaviors of all birds at survey sites, 5) bird taxonomy and indication of conservation status, and 6) habitat information pertaining to survey site photographs. The objectives of the survey were to 1) use targeted...
Aquatic Ecosystems
Aquatic Ecosystems
Filter Total Items: 152
Physical and Imagery-Based Morphological Measures of Pacific Walruses in Human Care Physical and Imagery-Based Morphological Measures of Pacific Walruses in Human Care
This dataset contains morphological measures of 21 Pacific walruses in human care in the United States, Belgium, and Germany measured directly and via an aerially mounted camera in 2022 and 2023. Six individuals were measured twice: once at their typical annual lowest body mass and once at their typical annual maximum body mass. The remaining 15 individuals were measured on one occasion...
Data from the Capture and Collection of Non Die-off Seabirds Across Alaska Data from the Capture and Collection of Non Die-off Seabirds Across Alaska
This data package contains one table with morphometric and diet information for "non-die-off" seabirds captured and collected in southcentral and southwest Alaska. Data pertains to birds captured (live) or collected (lethally) including, bird identification numbers, sampling dates, geographic locations, body measurements, diets (from either stomach contents or regurgitated prey), and sex...
Sea Otter Aerial Survey Data from lower Cook Inlet and the outer Kenai Penisula, Alaska, 2002 Sea Otter Aerial Survey Data from lower Cook Inlet and the outer Kenai Penisula, Alaska, 2002
This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in lower Cook Inlet and the outer Kenai Peninsula, Alaska, based on data collected during a series of aerial surveys from May-Aug 2002. The dataset consists of: (1) sea otter counts along strip transects, (2) sea otter counts in Intensive Search Unit (ISU) within...
Sea Otter Aerial Survey Data from Western Prince William Sound, Alaska, 2022 Sea Otter Aerial Survey Data from Western Prince William Sound, Alaska, 2022
This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in western Prince William Sound, Alaska, based on data collected during a series of population-wide aerial surveys in June 2022. The dataset consists of: (1) sea otter counts along strip transects, (2) sea otter counts in Intensive Search Unit (ISU) within the...
Black Oystercatcher Morphology and Primary Feather Lengths in Alaska and British Columbia, 2019-2022 Black Oystercatcher Morphology and Primary Feather Lengths in Alaska and British Columbia, 2019-2022
These data provide morphological measurements and primary feather length measurements of Black Oystercatcher (Haematopus bachmani) captured at several sites across Alaska and British Columbia between 2019 and 2022. The first table contains mass and morphological measurements of body and bill size. The second table provides lengths of individual primary feathers measured from folded wing
Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019 Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019
These data describe observations of sea otter foraging behavior in Glacier Bay National Park and Preserve. Data consist of dive and surface times, success in prey retrieval, prey item, prey quantity, and size. Additionally, location of observations, and age class, sex, and pup status of the focal sea otter were also recorded.
Alaska Forage Fish Database (AFFD) Alaska Forage Fish Database (AFFD)
The Alaska Forage Fish Database (AFFD) is a consolidation of survey data from multiple agencies that were sampled via fishing gear and predator diets. The spatial coverage includes the Gulf of Alaska, Bering Sea, Aleutian Islands, Chukchi Sea, and Beaufort Sea. Fish species within the database include Pacific sand lance, Pacific capelin, Pacific herring, juvenile walleye pollock and...
Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019
This dataset contains taxonomic information, counts, and lengths of macroinvertebrates collected from rivers in northwest Alaska using drift and kick nets during summer and fall 2015-2019.
Pacific Walrus Coastal Haulout Images from Carcass Surveys Pacific Walrus Coastal Haulout Images from Carcass Surveys
This data package contains digital images, survey location logs and a summary tabulation from carcass survey conducted at walrus haulouts in Alaska. A summary of image collection times is provided as a tabular file.
Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas
These data are estimates of den emergence date, den site departure dates, and duration at den sites as well as post-emergence observations for female polar bears sampled in the southern Beaufort Sea subpopulation 1985-2016 and the Chukchi Sea subpopulation 2008-2017. The data were used to better understand the importance of time spent at the den site post-emergence. Emergence dates and...
Wildlife Health and Genetics
Wildlife Health and Genetics
Filter Total Items: 109
Data for Infectivity of Wild-Bird Origin Influenza A Viruses in Minnesota Wetlands Across Seasons Data for Infectivity of Wild-Bird Origin Influenza A Viruses in Minnesota Wetlands Across Seasons
This data set represents an ecological and laboratory-based experiment to understand influenza virus viability in surface water. Data tables included in this release consist of 1) daily mean water temperature, 2) viability of viruses maintained in water, 3) influenza detection in duck samples, 4) viral titers of experimentally inoculated water samples, and 5) water chemistry.
Dictionary of Microsatellite Loci from the U.S. Geological Survey, Alaska Science Center, Molecular Ecology Laboratory Dictionary of Microsatellite Loci from the U.S. Geological Survey, Alaska Science Center, Molecular Ecology Laboratory
This data package provides a dictionary of microsatellite locus primers used by the USGS Alaska Science Center, Molecular Ecology Laboratory (MEL). It is a look-up file of microsatellite locus names and citations to the original publication or source where additional information about the locus primers may be found.
Molecular Sexing of Birds Using Quantitative PCR (qPCR) of Sex-Linked Genes and Logistic Models Molecular Sexing of Birds Using Quantitative PCR (qPCR) of Sex-Linked Genes and Logistic Models
This dataset provides cycle threshold (Ct) values achieved during qPCR for 6 sex-linked genes, and two autosomal genes, for individuals from 60 species and across 13 orders of birds.
Brant (Branta bernicla) Genetic Data from North America, Europe, and Asia Brant (Branta bernicla) Genetic Data from North America, Europe, and Asia
This data package is comprised of one table with genetic data from Brant (Branta bernicla). Data include sampling location and allele sizes of 14 microsatellite loci.
Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016 Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016
These data consist of the fatty acid composition (percent of mass) of adipose tissue samples from polar bears in Alaska's southern Beaufort Sea. Fat biopsy samples were collected from polar bears that were either captured or biopsy darted along the north coast of Alaska or on offshore ice during March, April, or May from 2004 to 2016. The data also include an identification code unique...
Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis
These data are estimates of the proportional contributions of bearded seal, beluga whale, bowhead whale, and ringed seal to the diets of southern Beaufort Sea polar bears. Fat biopsy samples were collected from polar bears captured or biopsy darted along the north coast of Alaska or on offshore ice during March, April, and May from 2004 to 2016. Fatty acid data of the above four prey...
Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022 Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022
This data release includes 4 child items with data regarding metabolic rate, body composition, diet, behavior, blood chemistry, stable isotope, tri-axial accelerometer, and GPS locations of polar bears (Ursus maritimus) on land, Western Hudson Bay, Canada, 2019-2022. Child Item 1: "GPS Location Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019...
Molecular Detection and Characterization of Highly Pathogenic H5N1 Avian Influenza Viruses in Wild Birds Inhabiting Western Alaska Provides Evidence for Three Independent Viral Introductions Molecular Detection and Characterization of Highly Pathogenic H5N1 Avian Influenza Viruses in Wild Birds Inhabiting Western Alaska Provides Evidence for Three Independent Viral Introductions
This data set describes three independent viral introductions of Highly pathogenic H5N1 avian influenza viruses into Alaska.
Harlequin Duck Genetic Data, North America, Greenland, and Iceland, 1952-2001 Harlequin Duck Genetic Data, North America, Greenland, and Iceland, 1952-2001
This data package is comprised of three tables with data from wintering Harlequin Ducks (Histrionicus histrionicus) from Alaska, British Columbia, Washington, Maine, Greenland, and Iceland. The first table contains available allele sizes for 7 microsatellite loci (Sfiµ1, Sfiµ4, Sfiµ9, Sfiµ10, Bcaµ10, Hhiµ2, Hhiµ5) and mtDNA control region haplotypes. The second table contains the mtDNA...
Gene Transcription and Heat Shock Protein 70 Abundance in Juvenile Hatchery Reared Coho Salmon and Chinook Salmon during a Manipulative Thermal Experiment, Anchorage, Alaska 2020-2021 Gene Transcription and Heat Shock Protein 70 Abundance in Juvenile Hatchery Reared Coho Salmon and Chinook Salmon during a Manipulative Thermal Experiment, Anchorage, Alaska 2020-2021
This dataset consists of two tables with the results from two manipulative thermal experiments with juvenile coho salmon (May 2021) and juvenile Chinook salmon (May 2020) and include 1) gene transcription results and heat shock protein 70 abundance in coho salmon and Chinook salmon and 2) water temperatures to which fish were exposed during the experiment.
Environmental Health and eDNA
Environmental Health and eDNA
Habitat and Landscape Change
Habitat and Landscape Change
Filter Total Items: 39
Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico
These data are in seven tables relating to surveys of eelgrass (Zostera marina) and widgeongrass (Ruppia maritima) beds in embayments of the north Pacific coast of Baja California, Mexico. The tables provide environmental conditions, eelgrass and widgeongrass abundance, and measurements used to estimate their aboveground biomass. These tables also provide information on percent cover...
Point Sampling for Eelgrass (Zostera marina) and Seaweeds in Duchikthluk and Shoal Bays of Nunivak Island, Alaska, 2010 Point Sampling for Eelgrass (Zostera marina) and Seaweeds in Duchikthluk and Shoal Bays of Nunivak Island, Alaska, 2010
These data are in seven tables relating to surveys of eelgrass beds in Duchikthluk and Shoal Bays of Nunivak Island, Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass. These tables also provide information on percent cover and location of eelgrass and seaweeds/bluegreen algae, biomass of eelgrass...
Point Sampling Data from Eelgrass (Zostera marina), Seaweeds and Selected Invertebrates at Six Embayments and Two Islands at the End of the Alaska Peninsula Point Sampling Data from Eelgrass (Zostera marina), Seaweeds and Selected Invertebrates at Six Embayments and Two Islands at the End of the Alaska Peninsula
This dataset is from surveys for the abundance and distribution of eelgrass and seaweeds that were made at six embayments and two offshore islands at the southwestern end of the Alaska Peninsula in August-September 2012. The five tables provide information on percent cover and location of eelgrass and seaweeds, presence and absence of selected invertebrates, locations of eelgrass genetic...
Mapping Data of Polar Bear (Ursus maritimus) Maternal Den Habitat, Arctic Coastal Plain, Alaska Mapping Data of Polar Bear (Ursus maritimus) Maternal Den Habitat, Arctic Coastal Plain, Alaska
This data package includes 3 child items with mapping data of polar bear den habitat on the Arctic Coastal Plain of Alaska. Child Item 1: "Data Used to Compare Photo-Interpreted and IfSAR-Derived Maps of Polar Bear Denning Habitat for the 1002 Area of the Arctic National Wildlife Refuge, Alaska, 2006-2016" Child Item 2: "Polar Bear Maternal Den Habitat on the Coastal Plain of Northern...
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska
This data package is comprised of nine tables relating to surveys of eelgrass beds in Izembek and Kinzarof Lagoons, Izembek National Wildlife Refuge, Alaska (2007-2025). The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010 Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010
These data are in six tables relating to surveys of eelgrass beds in three bays adjacent to Togiak National Wildlife Refuge, in southwestern Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Alaska Peninsula-Becharof National Wildlife Refuges, Alaska, 2010 Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Alaska Peninsula-Becharof National Wildlife Refuges, Alaska, 2010
These data are in six tables relating to surveys of eelgrass beds in Chignik Lagoon and Mud Bay, Alaska Peninsula-Becharof National Wildlife Refuges. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
SUPERSEDED: Map of Eelgrass Distribution in 1999 and Field Survey Points in 2010 at Chignik Lagoon and Mud Bay, Alaska SUPERSEDED: Map of Eelgrass Distribution in 1999 and Field Survey Points in 2010 at Chignik Lagoon and Mud Bay, Alaska
This doi was reserved and published in error. Field survey data of eelgrass distribution and abundance at Chignik Lagoon are available in a USGS Data Release: https://doi.org/10.5066/P9URZJYW Map data of eelgrass distribution from locations in Alaska (including Chignik Lagoon) are available in a USGS Data Release: https://doi.org/10.5066/P9WEK4JI
Vegetation and Temperature Data, Smith River Estuary, Alaska, 2011-2013 Vegetation and Temperature Data, Smith River Estuary, Alaska, 2011-2013
This data release contains measurements of vegetation samples and temperature collected from experimental plots of Carex subspathacea along the Smith River Estuary, Alaska (2011-2013).
Goose Mass and Vegetation Data, Colville River Delta, Alaska, 2012-2017 Goose Mass and Vegetation Data, Colville River Delta, Alaska, 2012-2017
This data release contains three tables of information from the Colville River Delta, Alaska (CDR): offtake of Carex subspathacea (2012-2014), standing crop of C. subspathacea (2012-2014), and snow goose and black brant gosling mass data (2012-2017). Data were collected as part of the USGS Changing Arctic Ecosystems Initiative to understand the response of wildlife to rapid physical...
Ecosystem Analytics
Ecosystem Analytics
Alaska Science Center Ecosystems data releases are grouped by topic: Terrestrial Ecosystems, Aquatic Ecosystems, Wildlife Health and Genetics, Environmental Health and eDNA, Habitat and Landscape Change, and Ecosystem Analytics.
Return to Ecosystems or ASC Data Releases
Terrestrial Ecosystems | Aquatic Ecosystems | Wildlife Health and Genetics | Environmental Health and eDNA | Habitat and Landscape Change | Ecosystem Analytics
View by subject area:
Birds - Loons | Waterfowl | Shorebirds | Seabirds | Landbirds
Mammals - Caribou | Polar Bears | Walruses | Sea Otters
Fish - Marine and Freshwater Fish | Forage Fish
Landscape - Nearshore Marine | Eelgrass | Rusting Rivers
Genetics and Disease - Molecular Ecology Laboratory | Wildlife Disease
Quantitative Support - Ecosystem Analytics
View by collection:
ASC Wildlife Tracking Data Collection
Terrestrial Ecosystems
Terrestrial Ecosystems
Filter Total Items: 87
Tracking Data for Black Brant (Branta bernicla nigricans) Tracking Data for Black Brant (Branta bernicla nigricans)
This data release includes 1 child item with tracking data for Black Brant, a goose species that breeds in coastal areas of Alaska, northwestern Canada, and northeastern Russia and winters along coastal areas of North America from western Alaska to Mexico. Child Item 1: "Light-Level Geolocator Tracking Data for Black Brant (Branta bernicla nigricans)" -- Tracking data collected from...
Alaska Landbird Monitoring Survey Dataset Alaska Landbird Monitoring Survey Dataset
Boreal Partners in Flight developed the Alaska Landbird Monitoring Survey (ALMS) primarily to monitor breeding populations of landbirds in the vast off-road areas of Alaska in conjunction with data collected from the roadside North American Breeding Bird Survey (BBS). ALMS is a collaborative program in which agencies and other entities conduct standardized surveys of breeding birds and...
U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes) U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes)
This data package contains location data collected by the Argos System (CLS America, Inc.) from satellite transmitters attached to 116 Lesser Yellowlegs captured at multiple sites across their breeding and nonbreeding range in North America, 2018-2021. The raw data were processed to accomplish two goals: 1) flag implausible location and 2) remove locations within Joint Base Elmendorf...
GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Fortymile Herd, Alaska, 1998-1999 GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Fortymile Herd, Alaska, 1998-1999
These data were part of a pilot tracking study of three adult female caribou from the Fortymile Herd in Alaska. The dataset is comprised of two comma separated values (.csv) files. Data includes: 1) processed (i.e., erroneous locations removed) GPS locations for caribou, received once per hour for 6 months (October 1998 to April 1999), and 2) spatial, temporal, and biological attributes...
Tracking Data for Long-billed Curlews (Numenius americanus) Tracking Data for Long-billed Curlews (Numenius americanus)
This data release includes 2 child items with tracking data for Long-billed Curlews, a shorebird species that nests in deserts and grasslands of central and western North America and spends the nonbreeding season in agriculture fields and pastures or along coastlines in California, Texas, and Mexico. Child Item 1: "Argos Satellite Tracking Data for Long-billed Curlews (Numenius...
Movement Data for Migrating Geese Over the Northeast Pacific Ocean, 2018-2021 Movement Data for Migrating Geese Over the Northeast Pacific Ocean, 2018-2021
This dataset consists of one table with a record (row) for each goose location and columns containing location information and covariates. The dataset was used in an analysis of altitude selection and flight propensity in an accompanying paper (Weiser et al. 2024) and is being provided here to allow replication of that analysis. Goose locations (latitude, longitude, and altitude) were...
Data from the Inventory of Montane-nesting Birds in the Arctic Network of National Parks, Alaska Data from the Inventory of Montane-nesting Birds in the Arctic Network of National Parks, Alaska
This package contains information collected during avian and habitat survey data at five national parks/monuments: Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, Noatak National Preserve, and Bering Land Bridge National Preserve. The objectives of the surveys were to document the occurrence of 90 percent of the bird species...
Tracking Data for Bar-tailed Godwits (Limosa lapponica) Tracking Data for Bar-tailed Godwits (Limosa lapponica)
This data release includes 2 child items with tracking data for Bar-tailed Godwits. One of the subspecies, Limosa lapponica baueri, nests in Alaska and spends the nonbreeding season in New Zealand and eastern Australia whereas L.l.menzbieri nests in Siberia and spends the nonbreeding season in western Australia. Child Item 1: "Argos Satellite Tracking Data for Bar-tailed Godwits (Limosa...
Tracking Data for Buff-breasted Sandpipers (Calidris subruficollis) Tracking Data for Buff-breasted Sandpipers (Calidris subruficollis)
This data package includes 2 child items with tracking data for Buff-breasted Sandpipers, a shorebird species that breeds only in Arctic Alaska and Canada, spending the winter in the grasslands of Brazil, Uruguay, and Argentina after a lengthy migration. Child Item 1: "Argos and GPS Satellite Tracking Data for Buff-breasted Sandpipers (Calidris subruficollis) - Processed Data" - Quality
Data from the Inventory of Montane-nesting Birds in the Aniakchak National Monument and Preserve, Alaska Data from the Inventory of Montane-nesting Birds in the Aniakchak National Monument and Preserve, Alaska
This data package contains six tables: 1) characteristics of bird survey sites, 2) vegetation classification at survey sites, 3) detections of all birds at survey sites, 4) behaviors of all birds at survey sites, 5) bird taxonomy and indication of conservation status, and 6) habitat information pertaining to survey site photographs. The objectives of the survey were to 1) use targeted...
Aquatic Ecosystems
Aquatic Ecosystems
Filter Total Items: 152
Physical and Imagery-Based Morphological Measures of Pacific Walruses in Human Care Physical and Imagery-Based Morphological Measures of Pacific Walruses in Human Care
This dataset contains morphological measures of 21 Pacific walruses in human care in the United States, Belgium, and Germany measured directly and via an aerially mounted camera in 2022 and 2023. Six individuals were measured twice: once at their typical annual lowest body mass and once at their typical annual maximum body mass. The remaining 15 individuals were measured on one occasion...
Data from the Capture and Collection of Non Die-off Seabirds Across Alaska Data from the Capture and Collection of Non Die-off Seabirds Across Alaska
This data package contains one table with morphometric and diet information for "non-die-off" seabirds captured and collected in southcentral and southwest Alaska. Data pertains to birds captured (live) or collected (lethally) including, bird identification numbers, sampling dates, geographic locations, body measurements, diets (from either stomach contents or regurgitated prey), and sex...
Sea Otter Aerial Survey Data from lower Cook Inlet and the outer Kenai Penisula, Alaska, 2002 Sea Otter Aerial Survey Data from lower Cook Inlet and the outer Kenai Penisula, Alaska, 2002
This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in lower Cook Inlet and the outer Kenai Peninsula, Alaska, based on data collected during a series of aerial surveys from May-Aug 2002. The dataset consists of: (1) sea otter counts along strip transects, (2) sea otter counts in Intensive Search Unit (ISU) within...
Sea Otter Aerial Survey Data from Western Prince William Sound, Alaska, 2022 Sea Otter Aerial Survey Data from Western Prince William Sound, Alaska, 2022
This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in western Prince William Sound, Alaska, based on data collected during a series of population-wide aerial surveys in June 2022. The dataset consists of: (1) sea otter counts along strip transects, (2) sea otter counts in Intensive Search Unit (ISU) within the...
Black Oystercatcher Morphology and Primary Feather Lengths in Alaska and British Columbia, 2019-2022 Black Oystercatcher Morphology and Primary Feather Lengths in Alaska and British Columbia, 2019-2022
These data provide morphological measurements and primary feather length measurements of Black Oystercatcher (Haematopus bachmani) captured at several sites across Alaska and British Columbia between 2019 and 2022. The first table contains mass and morphological measurements of body and bill size. The second table provides lengths of individual primary feathers measured from folded wing
Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019 Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019
These data describe observations of sea otter foraging behavior in Glacier Bay National Park and Preserve. Data consist of dive and surface times, success in prey retrieval, prey item, prey quantity, and size. Additionally, location of observations, and age class, sex, and pup status of the focal sea otter were also recorded.
Alaska Forage Fish Database (AFFD) Alaska Forage Fish Database (AFFD)
The Alaska Forage Fish Database (AFFD) is a consolidation of survey data from multiple agencies that were sampled via fishing gear and predator diets. The spatial coverage includes the Gulf of Alaska, Bering Sea, Aleutian Islands, Chukchi Sea, and Beaufort Sea. Fish species within the database include Pacific sand lance, Pacific capelin, Pacific herring, juvenile walleye pollock and...
Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019
This dataset contains taxonomic information, counts, and lengths of macroinvertebrates collected from rivers in northwest Alaska using drift and kick nets during summer and fall 2015-2019.
Pacific Walrus Coastal Haulout Images from Carcass Surveys Pacific Walrus Coastal Haulout Images from Carcass Surveys
This data package contains digital images, survey location logs and a summary tabulation from carcass survey conducted at walrus haulouts in Alaska. A summary of image collection times is provided as a tabular file.
Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas
These data are estimates of den emergence date, den site departure dates, and duration at den sites as well as post-emergence observations for female polar bears sampled in the southern Beaufort Sea subpopulation 1985-2016 and the Chukchi Sea subpopulation 2008-2017. The data were used to better understand the importance of time spent at the den site post-emergence. Emergence dates and...
Wildlife Health and Genetics
Wildlife Health and Genetics
Filter Total Items: 109
Data for Infectivity of Wild-Bird Origin Influenza A Viruses in Minnesota Wetlands Across Seasons Data for Infectivity of Wild-Bird Origin Influenza A Viruses in Minnesota Wetlands Across Seasons
This data set represents an ecological and laboratory-based experiment to understand influenza virus viability in surface water. Data tables included in this release consist of 1) daily mean water temperature, 2) viability of viruses maintained in water, 3) influenza detection in duck samples, 4) viral titers of experimentally inoculated water samples, and 5) water chemistry.
Dictionary of Microsatellite Loci from the U.S. Geological Survey, Alaska Science Center, Molecular Ecology Laboratory Dictionary of Microsatellite Loci from the U.S. Geological Survey, Alaska Science Center, Molecular Ecology Laboratory
This data package provides a dictionary of microsatellite locus primers used by the USGS Alaska Science Center, Molecular Ecology Laboratory (MEL). It is a look-up file of microsatellite locus names and citations to the original publication or source where additional information about the locus primers may be found.
Molecular Sexing of Birds Using Quantitative PCR (qPCR) of Sex-Linked Genes and Logistic Models Molecular Sexing of Birds Using Quantitative PCR (qPCR) of Sex-Linked Genes and Logistic Models
This dataset provides cycle threshold (Ct) values achieved during qPCR for 6 sex-linked genes, and two autosomal genes, for individuals from 60 species and across 13 orders of birds.
Brant (Branta bernicla) Genetic Data from North America, Europe, and Asia Brant (Branta bernicla) Genetic Data from North America, Europe, and Asia
This data package is comprised of one table with genetic data from Brant (Branta bernicla). Data include sampling location and allele sizes of 14 microsatellite loci.
Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016 Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016
These data consist of the fatty acid composition (percent of mass) of adipose tissue samples from polar bears in Alaska's southern Beaufort Sea. Fat biopsy samples were collected from polar bears that were either captured or biopsy darted along the north coast of Alaska or on offshore ice during March, April, or May from 2004 to 2016. The data also include an identification code unique...
Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis
These data are estimates of the proportional contributions of bearded seal, beluga whale, bowhead whale, and ringed seal to the diets of southern Beaufort Sea polar bears. Fat biopsy samples were collected from polar bears captured or biopsy darted along the north coast of Alaska or on offshore ice during March, April, and May from 2004 to 2016. Fatty acid data of the above four prey...
Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022 Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022
This data release includes 4 child items with data regarding metabolic rate, body composition, diet, behavior, blood chemistry, stable isotope, tri-axial accelerometer, and GPS locations of polar bears (Ursus maritimus) on land, Western Hudson Bay, Canada, 2019-2022. Child Item 1: "GPS Location Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019...
Molecular Detection and Characterization of Highly Pathogenic H5N1 Avian Influenza Viruses in Wild Birds Inhabiting Western Alaska Provides Evidence for Three Independent Viral Introductions Molecular Detection and Characterization of Highly Pathogenic H5N1 Avian Influenza Viruses in Wild Birds Inhabiting Western Alaska Provides Evidence for Three Independent Viral Introductions
This data set describes three independent viral introductions of Highly pathogenic H5N1 avian influenza viruses into Alaska.
Harlequin Duck Genetic Data, North America, Greenland, and Iceland, 1952-2001 Harlequin Duck Genetic Data, North America, Greenland, and Iceland, 1952-2001
This data package is comprised of three tables with data from wintering Harlequin Ducks (Histrionicus histrionicus) from Alaska, British Columbia, Washington, Maine, Greenland, and Iceland. The first table contains available allele sizes for 7 microsatellite loci (Sfiµ1, Sfiµ4, Sfiµ9, Sfiµ10, Bcaµ10, Hhiµ2, Hhiµ5) and mtDNA control region haplotypes. The second table contains the mtDNA...
Gene Transcription and Heat Shock Protein 70 Abundance in Juvenile Hatchery Reared Coho Salmon and Chinook Salmon during a Manipulative Thermal Experiment, Anchorage, Alaska 2020-2021 Gene Transcription and Heat Shock Protein 70 Abundance in Juvenile Hatchery Reared Coho Salmon and Chinook Salmon during a Manipulative Thermal Experiment, Anchorage, Alaska 2020-2021
This dataset consists of two tables with the results from two manipulative thermal experiments with juvenile coho salmon (May 2021) and juvenile Chinook salmon (May 2020) and include 1) gene transcription results and heat shock protein 70 abundance in coho salmon and Chinook salmon and 2) water temperatures to which fish were exposed during the experiment.
Environmental Health and eDNA
Environmental Health and eDNA
Habitat and Landscape Change
Habitat and Landscape Change
Filter Total Items: 39
Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico
These data are in seven tables relating to surveys of eelgrass (Zostera marina) and widgeongrass (Ruppia maritima) beds in embayments of the north Pacific coast of Baja California, Mexico. The tables provide environmental conditions, eelgrass and widgeongrass abundance, and measurements used to estimate their aboveground biomass. These tables also provide information on percent cover...
Point Sampling for Eelgrass (Zostera marina) and Seaweeds in Duchikthluk and Shoal Bays of Nunivak Island, Alaska, 2010 Point Sampling for Eelgrass (Zostera marina) and Seaweeds in Duchikthluk and Shoal Bays of Nunivak Island, Alaska, 2010
These data are in seven tables relating to surveys of eelgrass beds in Duchikthluk and Shoal Bays of Nunivak Island, Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass. These tables also provide information on percent cover and location of eelgrass and seaweeds/bluegreen algae, biomass of eelgrass...
Point Sampling Data from Eelgrass (Zostera marina), Seaweeds and Selected Invertebrates at Six Embayments and Two Islands at the End of the Alaska Peninsula Point Sampling Data from Eelgrass (Zostera marina), Seaweeds and Selected Invertebrates at Six Embayments and Two Islands at the End of the Alaska Peninsula
This dataset is from surveys for the abundance and distribution of eelgrass and seaweeds that were made at six embayments and two offshore islands at the southwestern end of the Alaska Peninsula in August-September 2012. The five tables provide information on percent cover and location of eelgrass and seaweeds, presence and absence of selected invertebrates, locations of eelgrass genetic...
Mapping Data of Polar Bear (Ursus maritimus) Maternal Den Habitat, Arctic Coastal Plain, Alaska Mapping Data of Polar Bear (Ursus maritimus) Maternal Den Habitat, Arctic Coastal Plain, Alaska
This data package includes 3 child items with mapping data of polar bear den habitat on the Arctic Coastal Plain of Alaska. Child Item 1: "Data Used to Compare Photo-Interpreted and IfSAR-Derived Maps of Polar Bear Denning Habitat for the 1002 Area of the Arctic National Wildlife Refuge, Alaska, 2006-2016" Child Item 2: "Polar Bear Maternal Den Habitat on the Coastal Plain of Northern...
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Izembek National Wildlife Refuge, Alaska
This data package is comprised of nine tables relating to surveys of eelgrass beds in Izembek and Kinzarof Lagoons, Izembek National Wildlife Refuge, Alaska (2007-2025). The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010 Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010
These data are in six tables relating to surveys of eelgrass beds in three bays adjacent to Togiak National Wildlife Refuge, in southwestern Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Alaska Peninsula-Becharof National Wildlife Refuges, Alaska, 2010 Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Alaska Peninsula-Becharof National Wildlife Refuges, Alaska, 2010
These data are in six tables relating to surveys of eelgrass beds in Chignik Lagoon and Mud Bay, Alaska Peninsula-Becharof National Wildlife Refuges. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
SUPERSEDED: Map of Eelgrass Distribution in 1999 and Field Survey Points in 2010 at Chignik Lagoon and Mud Bay, Alaska SUPERSEDED: Map of Eelgrass Distribution in 1999 and Field Survey Points in 2010 at Chignik Lagoon and Mud Bay, Alaska
This doi was reserved and published in error. Field survey data of eelgrass distribution and abundance at Chignik Lagoon are available in a USGS Data Release: https://doi.org/10.5066/P9URZJYW Map data of eelgrass distribution from locations in Alaska (including Chignik Lagoon) are available in a USGS Data Release: https://doi.org/10.5066/P9WEK4JI
Vegetation and Temperature Data, Smith River Estuary, Alaska, 2011-2013 Vegetation and Temperature Data, Smith River Estuary, Alaska, 2011-2013
This data release contains measurements of vegetation samples and temperature collected from experimental plots of Carex subspathacea along the Smith River Estuary, Alaska (2011-2013).
Goose Mass and Vegetation Data, Colville River Delta, Alaska, 2012-2017 Goose Mass and Vegetation Data, Colville River Delta, Alaska, 2012-2017
This data release contains three tables of information from the Colville River Delta, Alaska (CDR): offtake of Carex subspathacea (2012-2014), standing crop of C. subspathacea (2012-2014), and snow goose and black brant gosling mass data (2012-2017). Data were collected as part of the USGS Changing Arctic Ecosystems Initiative to understand the response of wildlife to rapid physical...
Ecosystem Analytics
Ecosystem Analytics