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: 80
Data for the Summer Inventory of Landbirds and Other Avian Species in Kenai Fjords National Park, 2005 Data for the Summer Inventory of Landbirds and Other Avian Species in Kenai Fjords National Park, 2005
This data release contains observational data from a breeding bird inventory using standardized point counts conducted during May-June 2005 in Kenai Fjords National Park (KEFJ), Alaska. It also includes a single survey conducted for owls on the night of 30 April 2005. Data tables include 1) survey route details, 2) survey point details, 3) survey habitat details at survey points, 4) bird...
Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Stable Isotope, Tri-axial Accelerometer, and GPS Locations of Grizzly Bears (Ursus arctos) on the North Slope of Alaska, USA, 2023 Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Stable Isotope, Tri-axial Accelerometer, and GPS Locations of Grizzly Bears (Ursus arctos) on the North Slope of Alaska, USA, 2023
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 grizzly bears (Ursus arctos) on the North Slope of Alaska, 2023. Child Item 1: "GPS Location Data from Grizzly Bears (Ursus arctos) Instrumented on the North Slope of Alaska, USA, 2023" Child Item 2:...
Tracking Data for Caribou (Rangifer tarandus granti) Tracking Data for Caribou (Rangifer tarandus granti)
This data release includes 3 child items with tracking data for caribou, a terrestrial mammal that ranges between the Alaska and Canada. Child Item 1: "GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Denali Herd, Alaska, 2010-2018" Child Item 2: "GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Fortymile Herd, Alaska, 1998-1999" Child Item 3: "GPS...
Waterfowl Census Data during Fall Migration at Nanvak Bay, Togiak National Wildlife Refuge, Alaska, 1992 Waterfowl Census Data during Fall Migration at Nanvak Bay, Togiak National Wildlife Refuge, Alaska, 1992
Waterfowl were observed staging at Nanvak Bay, Togiak National Wildlife Refuge in southwest Alaska between 31 August and 27 September 1992. This data release contains five tables including 1) aerial surveys, 2) band resights for Black Brant (Branta bernicla nigricans), 3) Black Brant age ratios, 4) bird migration observations, and 5) taxonomy table for observed birds.
Emperor Goose (Anser canagicus) Mark-recapture and Resight Encounter History from the Yukon-Kuskokwim Delta, Alaska, 1994-2017 Emperor Goose (Anser canagicus) Mark-recapture and Resight Encounter History from the Yukon-Kuskokwim Delta, Alaska, 1994-2017
This dataset is in one table with mark-recapture and resight data of Emperor Geese marked with plastic color bands on the Yukon-Kuskokwim Delta in Alaska, 1994-2017.
Movements of Black Brant Tagged While Molting in the National Petroleum Reserve - Alaska Movements of Black Brant Tagged While Molting in the National Petroleum Reserve - Alaska
This data release contains five tables of information related to the movement patterns of Black Brant equipped with high-frequency GPS tags: 1) brant banding records, 2) helicopter flight routes for experimental disturbance trials, 3) Brant movement data from Milsar tags deployed in 2023, 4) Brant movement data from Milsar tags deployed in 2024, and 5) Brant movement data from Ornitela...
Movement Metrics of Adult Female Grizzly Bears and Polar Bears Used to Identify Cub Presence with Machine Learning Movement Metrics of Adult Female Grizzly Bears and Polar Bears Used to Identify Cub Presence with Machine Learning
These data represent movement metrics of adult female grizzly bears and polar bears with and without cubs-of-the-year at seven temporal scales after den departure. Grizzly bear data were collected in the Greater Yellowstone Ecosystem during 2000–2021 and in the Northern Continental Divide Ecosystem during 2003–2022. Polar bear data were collected in the Southern Beaufort Sea during 1986...
GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Denali Herd, Alaska, 2010-2018 GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Denali Herd, Alaska, 2010-2018
GPS collar location data were collected as part of a long-term study on caribou (Rangifer tarandus granti) in the Denali herd of Alaska. Collars were deployed on adult (greater than or equal to 2 years) female caribou from 2010-2013, and then refurbished and redeployed on adult (greater than or equal to 4 years) male caribou from 2014-2018. The collars were manufactured by Telonics (TGW...
GPS Tracking Data for the Nelchina Herd Caribou (Rangifer tarandus granti), Alaska, 1999-2002 GPS Tracking Data for the Nelchina Herd Caribou (Rangifer tarandus granti), Alaska, 1999-2002
These data were part of a tracking study of adult female caribou from the Nelchina 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 7 hours (October 1999 to October 2002), and 2) spatial, temporal, and biological attributes of the female caribou...
Comparison of Acoustic Recorders and Field Observers for Monitoring Tundra Bird Communities in Northwestern Alaska Comparison of Acoustic Recorders and Field Observers for Monitoring Tundra Bird Communities in Northwestern Alaska
Acoustic recorders can detect the presence of birds and these detections may be used for the purpose of population abundance or estimation. This monitoring project compared the abundance of tundra-breeding birds detected through both acoustic monitoring and observational surveys. The data package is comprised of four tables: (1) habitat type, including vegetation height at sites where...
Aquatic Ecosystems
Aquatic Ecosystems
Filter Total Items: 145
Historical Extent of Metal Mobilization Within Dolly Varden (Salvelinus malma) Spawning Habitat of the Noatak River Drainage Based on Landsat and Sentinel Data, 1986-2024 Historical Extent of Metal Mobilization Within Dolly Varden (Salvelinus malma) Spawning Habitat of the Noatak River Drainage Based on Landsat and Sentinel Data, 1986-2024
This data release provides a vector geospatial shapefile of river and creek segments within Dolly Varden (Salvelinus malma) habitat in the Noatak River drainage (DeCicco 1985) classified for metal impairment between 1986 and 2024. The impairment classifications were based on visual inspection of Landsat and Sentinel satellite imagery. Also provided are the satellite images (as raster...
Aquatic Invertebrate Composition from Ponds and Lakes of the Arctic Coastal Plain, Alaska, 2012-2013 Aquatic Invertebrate Composition from Ponds and Lakes of the Arctic Coastal Plain, Alaska, 2012-2013
This dataset provides information on aquatic invertebrate composition from ponds (n = 16; surface area 0.02 km2) and lakes (n =16, surface area > 0.10 km2) on the central Arctic Coastal Plain of Alaska. Ponds and lakes were selected for sampling as part of a larger study of Arctic water body food webs. Details on the study area and findings are published in Laske et al. 2018 and Laske et...
Tracking Data for Marbled Murrelets (Brachyramphus marmoratus) Tracking Data for Marbled Murrelets (Brachyramphus marmoratus)
This data release includes 2 child items with tracking data for Marbled murrelets tagged in Washington state and Alaska, 2008 and 2013. Child Item 1: "Argos Satellite Tracking Data for Marbled Murrelets (Brachyramphus marmoratus - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child Item 2: "Argos Satellite Tracking Data for Marbled Murrelets...
Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska, September 2024 Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska, September 2024
This dataset provides walrus counts in 10 m by 10 m square grid cells randomly selected from a standard set of grid cells established for the study area and that intersected with previously published walrus herd outlines and overlain on aerial survey imagery. Results are provided as geospatial polygons saved in the shapefile format. These data are based on visual interpretation of...
Data from Migratory Bird Aerial Surveys and Habitat, Nest Success, and Genetic Samples from Spectacled Eiders (Somateria fischeri) on the Indigirka River Delta, Russia Data from Migratory Bird Aerial Surveys and Habitat, Nest Success, and Genetic Samples from Spectacled Eiders (Somateria fischeri) on the Indigirka River Delta, Russia
This data release contains five spreadsheets of information from aerial surveys of the Indigirka River Delta, Russia, in June of 1993 and 1994, data on habitats where nests of Spectacled Eiders (Somateria fischeri) and other species of waterfowl were observed from 1993 to 1995, and genotypic data from feathers collected from eider nests to determine inter-annual rates of return by...
Southern Beaufort Sea Polar Bear Mark Recapture Data, 2000-2023 Southern Beaufort Sea Polar Bear Mark Recapture Data, 2000-2023
This dataset is one table with data collected and derived from polar bears sampled in Alaska from the Southern Beaufort Sea subpopulation during 2000-2023. Collected data includes individual identity, location of observation, observation type, estimated birth year, and demographic information. Data were collected from polar bears that were captured, remotely sampled using biopsy darts...
Walrus Haulout Audio Recordings Near Point Lay 2024 Walrus Haulout Audio Recordings Near Point Lay 2024
This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the...
Bureau of Land Management Data on Breeding Ecology and Behavioral Responses of Loons to Oilfield Development Activities in the Fish Creek Watershed, National Petroleum Reserve in Alaska, 2016 and 2017 Bureau of Land Management Data on Breeding Ecology and Behavioral Responses of Loons to Oilfield Development Activities in the Fish Creek Watershed, National Petroleum Reserve in Alaska, 2016 and 2017
These data consist of the behavioral responses of Pacific and Yellow-billed Loons to helicopter overflights and ground-based human activity in disturbed vs. undisturbed areas, as well as nest success in the summers of 2016 and 2017 at two field camps in the Fish Creek watershed, NPR-A.
Capture Data from Molting Steller's Eiders (Polysticta stelleri) at Izembek and Nelson Lagoons, Alaska Capture Data from Molting Steller's Eiders (Polysticta stelleri) at Izembek and Nelson Lagoons, Alaska
These data are in one table and contain information on the location, age, sex, and measurements (mass, ninth primary, culmen, and total tarsus) of Steller's Eiders during the flightless molt period. Captures took place at Izembek and Nelson Lagoons on the north side of the Alaska Peninsula.
Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska
This dataset provides walrus haulout group outlines in a shapefile format and haulout area sizes in csv format. These data are based on visual interpretation of imagery from aerial surveys by a small uncrewed aerial system (sUAS) operated by the U.S. Geological Survey Alaska Science Center, over large groups of walruses resting onshore near Point Lay, Alaska during September of 2024 and...
Wildlife Health and Genetics
Wildlife Health and Genetics
Filter Total Items: 109
Gene transcription in Pacific Salmon Gene transcription in Pacific Salmon
This data release contains one table with gene transcription results from muscle samples collected from fish occupying freshwater in various Alaskan watersheds. Heat shock protein 70 (HSP70) results from fish included in this data release are published in a separate data release available at https://doi.org/10.5066/P13ZYKWR.
Population Genetic Data of Breeding and Wintering King Eiders (Somateria spectabilis) Population Genetic Data of Breeding and Wintering King Eiders (Somateria spectabilis)
This data release includes one table of nuclear microsatellite genotypes and mitochondrial DNA haplotypes from the cytochrome b region in King Eider. This information was used to determine levels of population genetic differentiation among breeding and wintering sites of King Eiders (Somateria fischeri).
Baseline Health Parameter Data from Breeding Pacific (Gavia pacifica) and Red-throated Loons (G. stellata) in Northern Alaska, 2023 Baseline Health Parameter Data from Breeding Pacific (Gavia pacifica) and Red-throated Loons (G. stellata) in Northern Alaska, 2023
These data are in four tables relating to complete blood count (CBC), biochemistry, blood gas analysis, corticosterone, serum protein electrophoresis, and sample attribute data of adult Pacific (Gavia pacifica) and Red-throated Loons (G. stellata) breeding in northern Alaska in 2023.
Selenium Concentrations of Adult Female Emperor Geese (Anser canagicus) Breeding on the Yukon-Kuskokwim Delta, Alaska, 2017 Selenium Concentrations of Adult Female Emperor Geese (Anser canagicus) Breeding on the Yukon-Kuskokwim Delta, Alaska, 2017
These data are in one table relating to the selenium concentration (μg/g) in whole blood of adult female emperor geese (Anser canagicus) sampled on the Yukon-Kuskokwim Delta, Alaska in June 2017.
Polar Bear Microsatellite Data Southern Beaufort Sea 2010-2023 Polar Bear Microsatellite Data Southern Beaufort Sea 2010-2023
This data set provides polar bear microsatellite genotypes derived from twenty loci (CPH9, CXX20, CXX110, CXX173, G1A, G10B, G10C, G1D, G10H, G10J, G10L, G10M, G10P, G10U, G10X, MU50, MU51, MU59, MSUT2, 145P07). Blood, buccal swab, skin, and hair samples for microsatellite genetic analysis were collected from polar bears from the Southern Beaufort Sea between 1981 and 2023. Blood, buccal...
Genomic Data from Gray-headed Chickadee and Boreal Chickadee Genomic Data from Gray-headed Chickadee and Boreal Chickadee
This dataset provides sample data and NCBI accession information for genomic sequencing of Gray-headed Chickadee and Boreal Chickadee from North America and Russia.
Genotype Data for Population Genetic Study of Emperor Geese (Anser canagicus) in Alaska Genotype Data for Population Genetic Study of Emperor Geese (Anser canagicus) in Alaska
This data release includes genotype data for 210 Emperor Geese collected on their breeding grounds in Alaska, specifically the Yukon-Kuskokwim Delta and the Seward Peninsula, from 2007-2022. The samples were sequenced with restriction site-associated sequencing (RAD-seq), and genotyped at 44,648 single nucleotide polymorphisms (SNPs).
Genetic Data for Evaluating Morphology Use to Identify Hunter-Harvested Geese Genetic Data for Evaluating Morphology Use to Identify Hunter-Harvested Geese
This data release contains one table of genetic data (mitochondrial haplotypes and nuclear microsatellite genotypes) used to evaluate utility of two morphological measures (culmen length and plumage color) to correctly identify groups of hunter-harvested dusky (Branta canadensis occidentalis) and dusky-like Canada geese on wintering grounds within the Pacific Flyway of North America...
Macoma Clam Prey Identified by DNA Metabarcoding, 2018 and 2019, Alaska Macoma Clam Prey Identified by DNA Metabarcoding, 2018 and 2019, Alaska
This dataset describes sequence data derived from 18S ribosomal and ribulose bisphosphate carboxylase (rbcL) DNA. Stomach contents from 190 Macoma calcarea clams were examined for this study. Clams were collected from the Bering Sea and Chukchi Sea, Alaska in 2018 and 2019 using benthic van Veen grabs.
Data Associated with Beak Deformities in Red-tailed Hawks (Buteo jamaicensis), 1992-2024 Data Associated with Beak Deformities in Red-tailed Hawks (Buteo jamaicensis), 1992-2024
This dataset consists of three tables with data associated with Red-tailed Hawks exhibiting beak deformities characteristic of avian keratin disorder (AKD). The first is comprised of Red-tailed Hawks collected or captured in the Northwest region of the United States. The second is a compilation of reports from citizen science observers or scientific literature. The third is a poecivirus...
Environmental Health and eDNA
Environmental Health and eDNA
Data for Assessing the Utility of eDNA Approaches for Determining the Impacts of Metal Mobilization from Thawing Permafrost on Fish Communities in Arctic Streams Data for Assessing the Utility of eDNA Approaches for Determining the Impacts of Metal Mobilization from Thawing Permafrost on Fish Communities in Arctic Streams
This data set describes results for laboratory experiments to determine the efficacy of environmental DNA quantitative PCR assays for four fish species when applied to filtered water samples containing metals mobilized from thawing permafrost.
Data for Characterization of Antimicrobial Resistance Genes in Surface Waters in Two National Parks in Alaska Data for Characterization of Antimicrobial Resistance Genes in Surface Waters in Two National Parks in Alaska
This data set describes the assessment of surface waters in Denali National Park and Preserve and Wrangell St. Elias National Park and Preserve for antimicrobial resistance genes during four summer months (May - August).
Validation and Application of a Standardized Quantitative PCR Assay for the Assessment of Antimicrobial Resistance Genes Validation and Application of a Standardized Quantitative PCR Assay for the Assessment of Antimicrobial Resistance Genes
This data set describes results for two laboratory experiments to validate a quantitative PCR assay for the assessment of antimicrobial resistance genes in surface waters. Data are also provided for the application of the assay surface water samples collected from three national parks in Alaska.
In Situ Fluorometric Measurements of Cyanobacteria, Green Algae, and Diatoms in Biofilms from Northwest Alaskan Rivers During Summer and Fall 2016-2019 In Situ Fluorometric Measurements of Cyanobacteria, Green Algae, and Diatoms in Biofilms from Northwest Alaskan Rivers During Summer and Fall 2016-2019
This dataset contains measurements of in situ benthic biofilms from rivers of northwest Alaska during summer and fall 2016-2019. Measurements were made using a Benthotorch (bbe Moldaenke, Kiel, Germany) hand-held fluorometer, which distinguishes taxa (cyanobacteria, green algae, diatoms) and provides estimates of standing biomass.
Data for Detection of Giardia and Cryptosporidium Parasites in Surface Water of a Subarctic City Data for Detection of Giardia and Cryptosporidium Parasites in Surface Water of a Subarctic City
This dataset describes the number and detection of Giardia cysts and Cryptosporidium oocysts in water samples collected from creeks and lakes in Anchorage, Alaska during 2021.
Detection of the Aquatic Invasive Species (AIS) Elodea canadensis and E. nuttallii Using Environmental DNA (eDNA), Alaska Detection of the Aquatic Invasive Species (AIS) Elodea canadensis and E. nuttallii Using Environmental DNA (eDNA), Alaska
This data set is comprised of one table with sampling information and National Center for Biotechnology Information (NCBI) BioProject accession numbers for sequence information of this amplicon-based study targeting Elodea canadensis and E. nuttallii in freshwater systems of Alaska from environmental samples. Highly conserved primers which can differentiate these species of interest were...
Antimicrobial resistance testing, and qPCR detection of antimicrobial resistance genes in surface water and gull (Larus spp.) feces on the Kenai Peninsula, Alaska, 2021 Antimicrobial resistance testing, and qPCR detection of antimicrobial resistance genes in surface water and gull (Larus spp.) feces on the Kenai Peninsula, Alaska, 2021
This data set includes information on collections of surface water and fecal samples from wild gulls (Larus spp.) at two locations on the Kenai Peninsula, Alaska, USA. Samples were screened for Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) and tested for resistance to multiple antibiotics.
Detection of Multiple Fish Species Using Environmental DNA (eDNA), Alaska 2018 Detection of Multiple Fish Species Using Environmental DNA (eDNA), Alaska 2018
This release provides results of an environmental DNA (eDNA) study of fish identified in seven Alaskan lakes, three streams, and a positive control. Samples included replicates for multiple sampling dates and locations. The reference list and conserved primer sets to identify species present were developed using publicly available data (https://www.ncbi.nlm.nih.gov/genbank/). Highly...
Detection of Seagrass Pathogens using Environmental DNA (eDNA), North Pacific, 2016-Present Detection of Seagrass Pathogens using Environmental DNA (eDNA), North Pacific, 2016-Present
This data set is comprised of one table with sampling information and NCBI BioProject accession numbers for sequence information of this amplicon-based study targeting Labyrinthula, Phytophthora, and Halophytophthora of known pathogenic and non-pathogenic [to eelgrass (Zostera marina)] strains from eDNA samples. eDNA samples included water, sediment, and eelgrass from Notsuke Wan (Cove)...
Influenza A Virus Persistence Data from an Urban Wetland in Anchorage, Alaska, 2018-2019 Influenza A Virus Persistence Data from an Urban Wetland in Anchorage, Alaska, 2018-2019
This dataset is three tables with details of samples and aliquots of waterfowl feces deposited in filtered surface water collected from an urban waterbody in Anchorage, Alaska in 2018-2019. Sample vials were submerged underwater in the same waterbody from which the samples were collected and the samples were tested for the presence and viability of influenza A virus. Temperature data and...
Habitat and Landscape Change
Habitat and Landscape Change
Filter Total Items: 38
Slash Pile Characteristics and their Relationship to Habitat for Sacramento Mountain Salamanders, New Mexico USA Slash Pile Characteristics and their Relationship to Habitat for Sacramento Mountain Salamanders, New Mexico USA
This data package contains six tables: 1) slash pile characteristics, 2) soil moisture and temperature below and nearby slash piles, 3) measurements of individual logs within slash piles, 4) characteristics of log cover objects nearby slash piles, 5) locations and body measurements of Sacramento Mountain salamanders (Aneides hardii) found under or within slash piles or individual log...
Continuous Temperature and Specific Conductance from the Yukon River and Arctic Rivers in Alaska Continuous Temperature and Specific Conductance from the Yukon River and Arctic Rivers in Alaska
This data release includes continuous measurements of stream temperature and specific conductance from 24 sites on the Yukon River and other arctic rivers in Alaska. Measurements were collected at selected U.S. Geological Survey stream gages and in communities along major rivers.
Vegetation Transects to Measure Effects of Snow Goose Grazing on the Colville River Delta, Alaska Vegetation Transects to Measure Effects of Snow Goose Grazing on the Colville River Delta, Alaska
This data release corresponds to visual vegetation measurements in snow goose grazing areas of the Colville River Delta. Visual vegetation measurements data include functional group percent cover and evidence of goose activity including grazed stems, snow goose grubbing holes, and shoot pulling. These data were collected at a set of four 100m transects located in areas of representative...
Eelgrass (Zostera marina) Maps from 2016 and 2020, Izembek Lagoon, Alaska Eelgrass (Zostera marina) Maps from 2016 and 2020, Izembek Lagoon, Alaska
This data package includes 40 geospatial rasters (maps) depicting various metrics about eelgrass (Zostera marina) coverage at Izembek Lagoon, Alaska, during 2016 and 2020. Two maps were produced from two Sentinel-2 satellite images collected on July 1, 2016, and August 14, 2020. Spectral classes derived from each satellite image were annotated and mapped based on data collected in the...
Eelgrass (Zostera marina) Percent Cover Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska Eelgrass (Zostera marina) Percent Cover Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska
These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has one comma separated values (.csv) table with estimates of eelgrass (Zostera marina) percent cover. Eelgrass cover was estimated from sonar and video drop cameras deployed from boats following prescribed survey transects.
Corrected Fire Perimeters of Alaska's National Wildlife Refuges Corrected Fire Perimeters of Alaska's National Wildlife Refuges
This data package includes 481 geospatial vector polygons of historic fire perimeters associated with National Wildlife Refuges in Alaska. These polygons, originally held within the Alaska Large Fire Database (ALFD), were reviewed and found to have geospatial inaccuracies with respect to the fire they represent. They were corrected and updated based on a variety of remote sensing...
Water Temperature, Electrical Conductivity, and Salinity of Lagoons in the Beaufort Sea, Alaska, 2017-2019 Water Temperature, Electrical Conductivity, and Salinity of Lagoons in the Beaufort Sea, Alaska, 2017-2019
This dataset contains a table with temperature (°C), raw electrical conductivity (μS/cm), and salinity (psu) measured in Beaufort Sea, Alaska, Lagoons during summers 2017-2019.
Chemistry of Orange and Reference Streams in Northwestern Alaska Chemistry of Orange and Reference Streams in Northwestern Alaska
These data include water chemistry from headwater streams to large rivers that have recently turned orange and reference rivers that have not. These samples were collected in two national parks in Arctic Alaska: Kobuk Valley National Park, and Noatak National Preserve.
Hourly Vehicle Traffic Data Associated with Industrial Activity on the North Slope of Alaska During Summers 2019–2020 Hourly Vehicle Traffic Data Associated with Industrial Activity on the North Slope of Alaska During Summers 2019–2020
This dataset contains hourly vehicle traffic counts in the Kuparuk and Milne Point oil fields on the North Slope of Alaska during summers 2019 and 2020. The oil field roads were generally closed to the public during the study period, so traffic was primarily associated with industrial activities. Data were collected using TRAFx vehicle traffic counters (TRAFx Research Ltd, Canmore...
Data from Sampling for Small-Scale Geographic Variation in Salinity Along the Lower Kashunuk River, Yukon-Kuskokwim Delta, Alaska, 1993 Data from Sampling for Small-Scale Geographic Variation in Salinity Along the Lower Kashunuk River, Yukon-Kuskokwim Delta, Alaska, 1993
This dataset provides salinity measurements collected from water bodies along 17 east-west transects in along the lower Kashunuk River, Yukon-Kuskokwim Delta National Wildlife Refuge, 25 June - 30 July 1993.
Ecosystem Analytics
Ecosystem Analytics
Data for Analysis of Factors Affecting Success of Dorsally Mounted Trackers in 37 Species of Shorebirds Data for Analysis of Factors Affecting Success of Dorsally Mounted Trackers in 37 Species of Shorebirds
This dataset includes details of 2,745 tracking devices (hereafter "trackers") deployed on shorebirds, including traits of the tags, traits of the shorebirds, and locations of the field sites. The dataset was used in the accompanying paper to evaluate how factors affected "success" of each tag package (tracker + attachment to the bird), where "success" was defined as whether the tag...
Avian Point-Count Data from Boreal Alaska and Maps of Predicted Population Density for Lesser Yellowlegs, Olive-sided Flycatcher, and Rusty Blackbird, 2001-2020 Avian Point-Count Data from Boreal Alaska and Maps of Predicted Population Density for Lesser Yellowlegs, Olive-sided Flycatcher, and Rusty Blackbird, 2001-2020
This data package contains 1) field data and 2) predicted distributions of three species of boreal-nesting birds in interior Alaska: Lesser Yellowlegs (Tringa flavipes), Olive-sided Flycatcher (Contopus cooperi), and Rusty Blackbird (Euphagus carolinus). The data are compiled from several monitoring programs: Alaska Landbird Monitoring Survey, Alaska Off-road Point-count Program, Susitna...
Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Chukchi and Beaufort Seas, July-November 1985-2017 Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Chukchi and Beaufort Seas, July-November 1985-2017
This dataset consists of one table with estimated locations of adult female polar bears during July-November 1985-2017, used for quantifying changes in summer land use over time. Locations were estimated with a Continuous Time-Correlated Random Walk (CTCRW) model fit to satellite tracking from radio-collared adult female polar bears. All bears included in this data set were captured and
Counts of Birds in Aerial Photos from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019 Counts of Birds in Aerial Photos from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019
This dataset includes tables summarizing image information and bird counts from the aerial digital images taken over open water at Izembek Lagoon in Alaska in fall 2017-2019. These summaries list one record per image and provide the camera parameters, latitude, longitude, altitude, and automated and manual counts representing the total number of birds in each taxon (brant, white-cheeked...
Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Southern Beaufort Sea, 1986–2016 Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Southern Beaufort Sea, 1986–2016
This dataset consists of one table with predicted locations of adult female polar bears. Locations were derived by a Continuous Time-Correlated Random Walk (CTCRW) model using satellite tracking radio-collared adult female polar bears captured and instrumented in the southern Beaufort Sea, 1986–2016.
Nest Survival Bias Analysis Nest Survival Bias Analysis
This R script will run one replicate of one scenario used by Weiser (2021) to quantify biases in estimates of nest survival when nests are not found at the beginning of the nesting interval (age 0). The script simulates nest monitoring histories based on input parameters, applies models with or without an age effect to estimate daily survival rates, and calculates nest survival (to the...
Data and Model-based Estimates from Black Brant (Branta bernicla nigricans) Fall Age Ratio Surveys at Izembek Lagoon, Alaska Data and Model-based Estimates from Black Brant (Branta bernicla nigricans) Fall Age Ratio Surveys at Izembek Lagoon, Alaska
These data are in two tables relating to fall age ratios (number of juvenile birds : total birds aged) of Black brant (Branta bernicla nigricans) staging in Izembek Lagoon, Alaska since 1963. The first file is observation data for the birds' age classes during surveys and associated survey characteristics. The second file contains model-based estimates of age ratios by year along with SE...
Multistate Capture and Search Data from the Southern Beaufort Sea Polar Bear Subpopulation in Alaska, 2001-2016 Multistate Capture and Search Data from the Southern Beaufort Sea Polar Bear Subpopulation in Alaska, 2001-2016
This data release contains two tables of information on polar bear distributions in the southern Beaufort Sea during spring, from 2001 to 2016. One table provides location (classified into 5 broad regions) of individual bears during the spring. The other table presents the aerial search effort by year and area.
Habitat Selection Scenarios for Molting Waterfowl in the Goose Molting Area of the Teshekpuk Lake Special Area, for NPR-A Integrated Activity Plan/Environmental Impact Statement, 2020 Habitat Selection Scenarios for Molting Waterfowl in the Goose Molting Area of the Teshekpuk Lake Special Area, for NPR-A Integrated Activity Plan/Environmental Impact Statement, 2020
The dataset consists of a polygon shapefile. Each polygon represents a set of molt units (interconnected lakes used as habitat by molting waterfowl) within the Goose Molting Area of the Teshekpuk Lake Special Area in northern Alaska, in addition to a half-mile or 1-mile wide buffer, that were selected for restrictions on new surface occupancy or infrastructure development by the oil and...
Walrus Bayesian State-space Model Output from the Bering Sea and Chukchi Sea, 2008-2012 Walrus Bayesian State-space Model Output from the Bering Sea and Chukchi Sea, 2008-2012
State-space models offer researchers an objective approach to modeling complex animal location datasets, and state-space model behavior classifications are often assumed to have a link to animal behavior. We evaluated the behavioral classification accuracy of a Bayesian state-space model in Pacific walruses using Argos satellite tags outfitted with sensors to detect animal behavior in...
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: 80
Data for the Summer Inventory of Landbirds and Other Avian Species in Kenai Fjords National Park, 2005 Data for the Summer Inventory of Landbirds and Other Avian Species in Kenai Fjords National Park, 2005
This data release contains observational data from a breeding bird inventory using standardized point counts conducted during May-June 2005 in Kenai Fjords National Park (KEFJ), Alaska. It also includes a single survey conducted for owls on the night of 30 April 2005. Data tables include 1) survey route details, 2) survey point details, 3) survey habitat details at survey points, 4) bird...
Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Stable Isotope, Tri-axial Accelerometer, and GPS Locations of Grizzly Bears (Ursus arctos) on the North Slope of Alaska, USA, 2023 Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Stable Isotope, Tri-axial Accelerometer, and GPS Locations of Grizzly Bears (Ursus arctos) on the North Slope of Alaska, USA, 2023
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 grizzly bears (Ursus arctos) on the North Slope of Alaska, 2023. Child Item 1: "GPS Location Data from Grizzly Bears (Ursus arctos) Instrumented on the North Slope of Alaska, USA, 2023" Child Item 2:...
Tracking Data for Caribou (Rangifer tarandus granti) Tracking Data for Caribou (Rangifer tarandus granti)
This data release includes 3 child items with tracking data for caribou, a terrestrial mammal that ranges between the Alaska and Canada. Child Item 1: "GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Denali Herd, Alaska, 2010-2018" Child Item 2: "GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Fortymile Herd, Alaska, 1998-1999" Child Item 3: "GPS...
Waterfowl Census Data during Fall Migration at Nanvak Bay, Togiak National Wildlife Refuge, Alaska, 1992 Waterfowl Census Data during Fall Migration at Nanvak Bay, Togiak National Wildlife Refuge, Alaska, 1992
Waterfowl were observed staging at Nanvak Bay, Togiak National Wildlife Refuge in southwest Alaska between 31 August and 27 September 1992. This data release contains five tables including 1) aerial surveys, 2) band resights for Black Brant (Branta bernicla nigricans), 3) Black Brant age ratios, 4) bird migration observations, and 5) taxonomy table for observed birds.
Emperor Goose (Anser canagicus) Mark-recapture and Resight Encounter History from the Yukon-Kuskokwim Delta, Alaska, 1994-2017 Emperor Goose (Anser canagicus) Mark-recapture and Resight Encounter History from the Yukon-Kuskokwim Delta, Alaska, 1994-2017
This dataset is in one table with mark-recapture and resight data of Emperor Geese marked with plastic color bands on the Yukon-Kuskokwim Delta in Alaska, 1994-2017.
Movements of Black Brant Tagged While Molting in the National Petroleum Reserve - Alaska Movements of Black Brant Tagged While Molting in the National Petroleum Reserve - Alaska
This data release contains five tables of information related to the movement patterns of Black Brant equipped with high-frequency GPS tags: 1) brant banding records, 2) helicopter flight routes for experimental disturbance trials, 3) Brant movement data from Milsar tags deployed in 2023, 4) Brant movement data from Milsar tags deployed in 2024, and 5) Brant movement data from Ornitela...
Movement Metrics of Adult Female Grizzly Bears and Polar Bears Used to Identify Cub Presence with Machine Learning Movement Metrics of Adult Female Grizzly Bears and Polar Bears Used to Identify Cub Presence with Machine Learning
These data represent movement metrics of adult female grizzly bears and polar bears with and without cubs-of-the-year at seven temporal scales after den departure. Grizzly bear data were collected in the Greater Yellowstone Ecosystem during 2000–2021 and in the Northern Continental Divide Ecosystem during 2003–2022. Polar bear data were collected in the Southern Beaufort Sea during 1986...
GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Denali Herd, Alaska, 2010-2018 GPS Tracking Data for Caribou (Rangifer tarandus granti) from the Denali Herd, Alaska, 2010-2018
GPS collar location data were collected as part of a long-term study on caribou (Rangifer tarandus granti) in the Denali herd of Alaska. Collars were deployed on adult (greater than or equal to 2 years) female caribou from 2010-2013, and then refurbished and redeployed on adult (greater than or equal to 4 years) male caribou from 2014-2018. The collars were manufactured by Telonics (TGW...
GPS Tracking Data for the Nelchina Herd Caribou (Rangifer tarandus granti), Alaska, 1999-2002 GPS Tracking Data for the Nelchina Herd Caribou (Rangifer tarandus granti), Alaska, 1999-2002
These data were part of a tracking study of adult female caribou from the Nelchina 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 7 hours (October 1999 to October 2002), and 2) spatial, temporal, and biological attributes of the female caribou...
Comparison of Acoustic Recorders and Field Observers for Monitoring Tundra Bird Communities in Northwestern Alaska Comparison of Acoustic Recorders and Field Observers for Monitoring Tundra Bird Communities in Northwestern Alaska
Acoustic recorders can detect the presence of birds and these detections may be used for the purpose of population abundance or estimation. This monitoring project compared the abundance of tundra-breeding birds detected through both acoustic monitoring and observational surveys. The data package is comprised of four tables: (1) habitat type, including vegetation height at sites where...
Aquatic Ecosystems
Aquatic Ecosystems
Filter Total Items: 145
Historical Extent of Metal Mobilization Within Dolly Varden (Salvelinus malma) Spawning Habitat of the Noatak River Drainage Based on Landsat and Sentinel Data, 1986-2024 Historical Extent of Metal Mobilization Within Dolly Varden (Salvelinus malma) Spawning Habitat of the Noatak River Drainage Based on Landsat and Sentinel Data, 1986-2024
This data release provides a vector geospatial shapefile of river and creek segments within Dolly Varden (Salvelinus malma) habitat in the Noatak River drainage (DeCicco 1985) classified for metal impairment between 1986 and 2024. The impairment classifications were based on visual inspection of Landsat and Sentinel satellite imagery. Also provided are the satellite images (as raster...
Aquatic Invertebrate Composition from Ponds and Lakes of the Arctic Coastal Plain, Alaska, 2012-2013 Aquatic Invertebrate Composition from Ponds and Lakes of the Arctic Coastal Plain, Alaska, 2012-2013
This dataset provides information on aquatic invertebrate composition from ponds (n = 16; surface area 0.02 km2) and lakes (n =16, surface area > 0.10 km2) on the central Arctic Coastal Plain of Alaska. Ponds and lakes were selected for sampling as part of a larger study of Arctic water body food webs. Details on the study area and findings are published in Laske et al. 2018 and Laske et...
Tracking Data for Marbled Murrelets (Brachyramphus marmoratus) Tracking Data for Marbled Murrelets (Brachyramphus marmoratus)
This data release includes 2 child items with tracking data for Marbled murrelets tagged in Washington state and Alaska, 2008 and 2013. Child Item 1: "Argos Satellite Tracking Data for Marbled Murrelets (Brachyramphus marmoratus - Processed Data" -- Quality-controlled data collected from Argos satellite transmitters. Child Item 2: "Argos Satellite Tracking Data for Marbled Murrelets...
Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska, September 2024 Walrus Counts Apparent from Aerial Survey Images Collected Near Point Lay, Alaska, September 2024
This dataset provides walrus counts in 10 m by 10 m square grid cells randomly selected from a standard set of grid cells established for the study area and that intersected with previously published walrus herd outlines and overlain on aerial survey imagery. Results are provided as geospatial polygons saved in the shapefile format. These data are based on visual interpretation of...
Data from Migratory Bird Aerial Surveys and Habitat, Nest Success, and Genetic Samples from Spectacled Eiders (Somateria fischeri) on the Indigirka River Delta, Russia Data from Migratory Bird Aerial Surveys and Habitat, Nest Success, and Genetic Samples from Spectacled Eiders (Somateria fischeri) on the Indigirka River Delta, Russia
This data release contains five spreadsheets of information from aerial surveys of the Indigirka River Delta, Russia, in June of 1993 and 1994, data on habitats where nests of Spectacled Eiders (Somateria fischeri) and other species of waterfowl were observed from 1993 to 1995, and genotypic data from feathers collected from eider nests to determine inter-annual rates of return by...
Southern Beaufort Sea Polar Bear Mark Recapture Data, 2000-2023 Southern Beaufort Sea Polar Bear Mark Recapture Data, 2000-2023
This dataset is one table with data collected and derived from polar bears sampled in Alaska from the Southern Beaufort Sea subpopulation during 2000-2023. Collected data includes individual identity, location of observation, observation type, estimated birth year, and demographic information. Data were collected from polar bears that were captured, remotely sampled using biopsy darts...
Walrus Haulout Audio Recordings Near Point Lay 2024 Walrus Haulout Audio Recordings Near Point Lay 2024
This dataset consists of a complete set of audio recordings collected near a large walrus haulout at Point Lay, Alaska, during September of 2024. The recordings were collected using the Song Meter Mini 2 (Wildlife Acoustics, Inc., Maynard, MA) at two sites, one within 150 m of a large walrus herd resting on shore and one placed more than 4 km to the south of the herd directly under the...
Bureau of Land Management Data on Breeding Ecology and Behavioral Responses of Loons to Oilfield Development Activities in the Fish Creek Watershed, National Petroleum Reserve in Alaska, 2016 and 2017 Bureau of Land Management Data on Breeding Ecology and Behavioral Responses of Loons to Oilfield Development Activities in the Fish Creek Watershed, National Petroleum Reserve in Alaska, 2016 and 2017
These data consist of the behavioral responses of Pacific and Yellow-billed Loons to helicopter overflights and ground-based human activity in disturbed vs. undisturbed areas, as well as nest success in the summers of 2016 and 2017 at two field camps in the Fish Creek watershed, NPR-A.
Capture Data from Molting Steller's Eiders (Polysticta stelleri) at Izembek and Nelson Lagoons, Alaska Capture Data from Molting Steller's Eiders (Polysticta stelleri) at Izembek and Nelson Lagoons, Alaska
These data are in one table and contain information on the location, age, sex, and measurements (mass, ninth primary, culmen, and total tarsus) of Steller's Eiders during the flightless molt period. Captures took place at Izembek and Nelson Lagoons on the north side of the Alaska Peninsula.
Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska Walrus Haulout Outlines Apparent from Aerial Survey Images Collected Near Point Lay, Alaska
This dataset provides walrus haulout group outlines in a shapefile format and haulout area sizes in csv format. These data are based on visual interpretation of imagery from aerial surveys by a small uncrewed aerial system (sUAS) operated by the U.S. Geological Survey Alaska Science Center, over large groups of walruses resting onshore near Point Lay, Alaska during September of 2024 and...
Wildlife Health and Genetics
Wildlife Health and Genetics
Filter Total Items: 109
Gene transcription in Pacific Salmon Gene transcription in Pacific Salmon
This data release contains one table with gene transcription results from muscle samples collected from fish occupying freshwater in various Alaskan watersheds. Heat shock protein 70 (HSP70) results from fish included in this data release are published in a separate data release available at https://doi.org/10.5066/P13ZYKWR.
Population Genetic Data of Breeding and Wintering King Eiders (Somateria spectabilis) Population Genetic Data of Breeding and Wintering King Eiders (Somateria spectabilis)
This data release includes one table of nuclear microsatellite genotypes and mitochondrial DNA haplotypes from the cytochrome b region in King Eider. This information was used to determine levels of population genetic differentiation among breeding and wintering sites of King Eiders (Somateria fischeri).
Baseline Health Parameter Data from Breeding Pacific (Gavia pacifica) and Red-throated Loons (G. stellata) in Northern Alaska, 2023 Baseline Health Parameter Data from Breeding Pacific (Gavia pacifica) and Red-throated Loons (G. stellata) in Northern Alaska, 2023
These data are in four tables relating to complete blood count (CBC), biochemistry, blood gas analysis, corticosterone, serum protein electrophoresis, and sample attribute data of adult Pacific (Gavia pacifica) and Red-throated Loons (G. stellata) breeding in northern Alaska in 2023.
Selenium Concentrations of Adult Female Emperor Geese (Anser canagicus) Breeding on the Yukon-Kuskokwim Delta, Alaska, 2017 Selenium Concentrations of Adult Female Emperor Geese (Anser canagicus) Breeding on the Yukon-Kuskokwim Delta, Alaska, 2017
These data are in one table relating to the selenium concentration (μg/g) in whole blood of adult female emperor geese (Anser canagicus) sampled on the Yukon-Kuskokwim Delta, Alaska in June 2017.
Polar Bear Microsatellite Data Southern Beaufort Sea 2010-2023 Polar Bear Microsatellite Data Southern Beaufort Sea 2010-2023
This data set provides polar bear microsatellite genotypes derived from twenty loci (CPH9, CXX20, CXX110, CXX173, G1A, G10B, G10C, G1D, G10H, G10J, G10L, G10M, G10P, G10U, G10X, MU50, MU51, MU59, MSUT2, 145P07). Blood, buccal swab, skin, and hair samples for microsatellite genetic analysis were collected from polar bears from the Southern Beaufort Sea between 1981 and 2023. Blood, buccal...
Genomic Data from Gray-headed Chickadee and Boreal Chickadee Genomic Data from Gray-headed Chickadee and Boreal Chickadee
This dataset provides sample data and NCBI accession information for genomic sequencing of Gray-headed Chickadee and Boreal Chickadee from North America and Russia.
Genotype Data for Population Genetic Study of Emperor Geese (Anser canagicus) in Alaska Genotype Data for Population Genetic Study of Emperor Geese (Anser canagicus) in Alaska
This data release includes genotype data for 210 Emperor Geese collected on their breeding grounds in Alaska, specifically the Yukon-Kuskokwim Delta and the Seward Peninsula, from 2007-2022. The samples were sequenced with restriction site-associated sequencing (RAD-seq), and genotyped at 44,648 single nucleotide polymorphisms (SNPs).
Genetic Data for Evaluating Morphology Use to Identify Hunter-Harvested Geese Genetic Data for Evaluating Morphology Use to Identify Hunter-Harvested Geese
This data release contains one table of genetic data (mitochondrial haplotypes and nuclear microsatellite genotypes) used to evaluate utility of two morphological measures (culmen length and plumage color) to correctly identify groups of hunter-harvested dusky (Branta canadensis occidentalis) and dusky-like Canada geese on wintering grounds within the Pacific Flyway of North America...
Macoma Clam Prey Identified by DNA Metabarcoding, 2018 and 2019, Alaska Macoma Clam Prey Identified by DNA Metabarcoding, 2018 and 2019, Alaska
This dataset describes sequence data derived from 18S ribosomal and ribulose bisphosphate carboxylase (rbcL) DNA. Stomach contents from 190 Macoma calcarea clams were examined for this study. Clams were collected from the Bering Sea and Chukchi Sea, Alaska in 2018 and 2019 using benthic van Veen grabs.
Data Associated with Beak Deformities in Red-tailed Hawks (Buteo jamaicensis), 1992-2024 Data Associated with Beak Deformities in Red-tailed Hawks (Buteo jamaicensis), 1992-2024
This dataset consists of three tables with data associated with Red-tailed Hawks exhibiting beak deformities characteristic of avian keratin disorder (AKD). The first is comprised of Red-tailed Hawks collected or captured in the Northwest region of the United States. The second is a compilation of reports from citizen science observers or scientific literature. The third is a poecivirus...
Environmental Health and eDNA
Environmental Health and eDNA
Data for Assessing the Utility of eDNA Approaches for Determining the Impacts of Metal Mobilization from Thawing Permafrost on Fish Communities in Arctic Streams Data for Assessing the Utility of eDNA Approaches for Determining the Impacts of Metal Mobilization from Thawing Permafrost on Fish Communities in Arctic Streams
This data set describes results for laboratory experiments to determine the efficacy of environmental DNA quantitative PCR assays for four fish species when applied to filtered water samples containing metals mobilized from thawing permafrost.
Data for Characterization of Antimicrobial Resistance Genes in Surface Waters in Two National Parks in Alaska Data for Characterization of Antimicrobial Resistance Genes in Surface Waters in Two National Parks in Alaska
This data set describes the assessment of surface waters in Denali National Park and Preserve and Wrangell St. Elias National Park and Preserve for antimicrobial resistance genes during four summer months (May - August).
Validation and Application of a Standardized Quantitative PCR Assay for the Assessment of Antimicrobial Resistance Genes Validation and Application of a Standardized Quantitative PCR Assay for the Assessment of Antimicrobial Resistance Genes
This data set describes results for two laboratory experiments to validate a quantitative PCR assay for the assessment of antimicrobial resistance genes in surface waters. Data are also provided for the application of the assay surface water samples collected from three national parks in Alaska.
In Situ Fluorometric Measurements of Cyanobacteria, Green Algae, and Diatoms in Biofilms from Northwest Alaskan Rivers During Summer and Fall 2016-2019 In Situ Fluorometric Measurements of Cyanobacteria, Green Algae, and Diatoms in Biofilms from Northwest Alaskan Rivers During Summer and Fall 2016-2019
This dataset contains measurements of in situ benthic biofilms from rivers of northwest Alaska during summer and fall 2016-2019. Measurements were made using a Benthotorch (bbe Moldaenke, Kiel, Germany) hand-held fluorometer, which distinguishes taxa (cyanobacteria, green algae, diatoms) and provides estimates of standing biomass.
Data for Detection of Giardia and Cryptosporidium Parasites in Surface Water of a Subarctic City Data for Detection of Giardia and Cryptosporidium Parasites in Surface Water of a Subarctic City
This dataset describes the number and detection of Giardia cysts and Cryptosporidium oocysts in water samples collected from creeks and lakes in Anchorage, Alaska during 2021.
Detection of the Aquatic Invasive Species (AIS) Elodea canadensis and E. nuttallii Using Environmental DNA (eDNA), Alaska Detection of the Aquatic Invasive Species (AIS) Elodea canadensis and E. nuttallii Using Environmental DNA (eDNA), Alaska
This data set is comprised of one table with sampling information and National Center for Biotechnology Information (NCBI) BioProject accession numbers for sequence information of this amplicon-based study targeting Elodea canadensis and E. nuttallii in freshwater systems of Alaska from environmental samples. Highly conserved primers which can differentiate these species of interest were...
Antimicrobial resistance testing, and qPCR detection of antimicrobial resistance genes in surface water and gull (Larus spp.) feces on the Kenai Peninsula, Alaska, 2021 Antimicrobial resistance testing, and qPCR detection of antimicrobial resistance genes in surface water and gull (Larus spp.) feces on the Kenai Peninsula, Alaska, 2021
This data set includes information on collections of surface water and fecal samples from wild gulls (Larus spp.) at two locations on the Kenai Peninsula, Alaska, USA. Samples were screened for Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) and tested for resistance to multiple antibiotics.
Detection of Multiple Fish Species Using Environmental DNA (eDNA), Alaska 2018 Detection of Multiple Fish Species Using Environmental DNA (eDNA), Alaska 2018
This release provides results of an environmental DNA (eDNA) study of fish identified in seven Alaskan lakes, three streams, and a positive control. Samples included replicates for multiple sampling dates and locations. The reference list and conserved primer sets to identify species present were developed using publicly available data (https://www.ncbi.nlm.nih.gov/genbank/). Highly...
Detection of Seagrass Pathogens using Environmental DNA (eDNA), North Pacific, 2016-Present Detection of Seagrass Pathogens using Environmental DNA (eDNA), North Pacific, 2016-Present
This data set is comprised of one table with sampling information and NCBI BioProject accession numbers for sequence information of this amplicon-based study targeting Labyrinthula, Phytophthora, and Halophytophthora of known pathogenic and non-pathogenic [to eelgrass (Zostera marina)] strains from eDNA samples. eDNA samples included water, sediment, and eelgrass from Notsuke Wan (Cove)...
Influenza A Virus Persistence Data from an Urban Wetland in Anchorage, Alaska, 2018-2019 Influenza A Virus Persistence Data from an Urban Wetland in Anchorage, Alaska, 2018-2019
This dataset is three tables with details of samples and aliquots of waterfowl feces deposited in filtered surface water collected from an urban waterbody in Anchorage, Alaska in 2018-2019. Sample vials were submerged underwater in the same waterbody from which the samples were collected and the samples were tested for the presence and viability of influenza A virus. Temperature data and...
Habitat and Landscape Change
Habitat and Landscape Change
Filter Total Items: 38
Slash Pile Characteristics and their Relationship to Habitat for Sacramento Mountain Salamanders, New Mexico USA Slash Pile Characteristics and their Relationship to Habitat for Sacramento Mountain Salamanders, New Mexico USA
This data package contains six tables: 1) slash pile characteristics, 2) soil moisture and temperature below and nearby slash piles, 3) measurements of individual logs within slash piles, 4) characteristics of log cover objects nearby slash piles, 5) locations and body measurements of Sacramento Mountain salamanders (Aneides hardii) found under or within slash piles or individual log...
Continuous Temperature and Specific Conductance from the Yukon River and Arctic Rivers in Alaska Continuous Temperature and Specific Conductance from the Yukon River and Arctic Rivers in Alaska
This data release includes continuous measurements of stream temperature and specific conductance from 24 sites on the Yukon River and other arctic rivers in Alaska. Measurements were collected at selected U.S. Geological Survey stream gages and in communities along major rivers.
Vegetation Transects to Measure Effects of Snow Goose Grazing on the Colville River Delta, Alaska Vegetation Transects to Measure Effects of Snow Goose Grazing on the Colville River Delta, Alaska
This data release corresponds to visual vegetation measurements in snow goose grazing areas of the Colville River Delta. Visual vegetation measurements data include functional group percent cover and evidence of goose activity including grazed stems, snow goose grubbing holes, and shoot pulling. These data were collected at a set of four 100m transects located in areas of representative...
Eelgrass (Zostera marina) Maps from 2016 and 2020, Izembek Lagoon, Alaska Eelgrass (Zostera marina) Maps from 2016 and 2020, Izembek Lagoon, Alaska
This data package includes 40 geospatial rasters (maps) depicting various metrics about eelgrass (Zostera marina) coverage at Izembek Lagoon, Alaska, during 2016 and 2020. Two maps were produced from two Sentinel-2 satellite images collected on July 1, 2016, and August 14, 2020. Spectral classes derived from each satellite image were annotated and mapped based on data collected in the...
Eelgrass (Zostera marina) Percent Cover Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska Eelgrass (Zostera marina) Percent Cover Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska
These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has one comma separated values (.csv) table with estimates of eelgrass (Zostera marina) percent cover. Eelgrass cover was estimated from sonar and video drop cameras deployed from boats following prescribed survey transects.
Corrected Fire Perimeters of Alaska's National Wildlife Refuges Corrected Fire Perimeters of Alaska's National Wildlife Refuges
This data package includes 481 geospatial vector polygons of historic fire perimeters associated with National Wildlife Refuges in Alaska. These polygons, originally held within the Alaska Large Fire Database (ALFD), were reviewed and found to have geospatial inaccuracies with respect to the fire they represent. They were corrected and updated based on a variety of remote sensing...
Water Temperature, Electrical Conductivity, and Salinity of Lagoons in the Beaufort Sea, Alaska, 2017-2019 Water Temperature, Electrical Conductivity, and Salinity of Lagoons in the Beaufort Sea, Alaska, 2017-2019
This dataset contains a table with temperature (°C), raw electrical conductivity (μS/cm), and salinity (psu) measured in Beaufort Sea, Alaska, Lagoons during summers 2017-2019.
Chemistry of Orange and Reference Streams in Northwestern Alaska Chemistry of Orange and Reference Streams in Northwestern Alaska
These data include water chemistry from headwater streams to large rivers that have recently turned orange and reference rivers that have not. These samples were collected in two national parks in Arctic Alaska: Kobuk Valley National Park, and Noatak National Preserve.
Hourly Vehicle Traffic Data Associated with Industrial Activity on the North Slope of Alaska During Summers 2019–2020 Hourly Vehicle Traffic Data Associated with Industrial Activity on the North Slope of Alaska During Summers 2019–2020
This dataset contains hourly vehicle traffic counts in the Kuparuk and Milne Point oil fields on the North Slope of Alaska during summers 2019 and 2020. The oil field roads were generally closed to the public during the study period, so traffic was primarily associated with industrial activities. Data were collected using TRAFx vehicle traffic counters (TRAFx Research Ltd, Canmore...
Data from Sampling for Small-Scale Geographic Variation in Salinity Along the Lower Kashunuk River, Yukon-Kuskokwim Delta, Alaska, 1993 Data from Sampling for Small-Scale Geographic Variation in Salinity Along the Lower Kashunuk River, Yukon-Kuskokwim Delta, Alaska, 1993
This dataset provides salinity measurements collected from water bodies along 17 east-west transects in along the lower Kashunuk River, Yukon-Kuskokwim Delta National Wildlife Refuge, 25 June - 30 July 1993.
Ecosystem Analytics
Ecosystem Analytics
Data for Analysis of Factors Affecting Success of Dorsally Mounted Trackers in 37 Species of Shorebirds Data for Analysis of Factors Affecting Success of Dorsally Mounted Trackers in 37 Species of Shorebirds
This dataset includes details of 2,745 tracking devices (hereafter "trackers") deployed on shorebirds, including traits of the tags, traits of the shorebirds, and locations of the field sites. The dataset was used in the accompanying paper to evaluate how factors affected "success" of each tag package (tracker + attachment to the bird), where "success" was defined as whether the tag...
Avian Point-Count Data from Boreal Alaska and Maps of Predicted Population Density for Lesser Yellowlegs, Olive-sided Flycatcher, and Rusty Blackbird, 2001-2020 Avian Point-Count Data from Boreal Alaska and Maps of Predicted Population Density for Lesser Yellowlegs, Olive-sided Flycatcher, and Rusty Blackbird, 2001-2020
This data package contains 1) field data and 2) predicted distributions of three species of boreal-nesting birds in interior Alaska: Lesser Yellowlegs (Tringa flavipes), Olive-sided Flycatcher (Contopus cooperi), and Rusty Blackbird (Euphagus carolinus). The data are compiled from several monitoring programs: Alaska Landbird Monitoring Survey, Alaska Off-road Point-count Program, Susitna...
Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Chukchi and Beaufort Seas, July-November 1985-2017 Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Chukchi and Beaufort Seas, July-November 1985-2017
This dataset consists of one table with estimated locations of adult female polar bears during July-November 1985-2017, used for quantifying changes in summer land use over time. Locations were estimated with a Continuous Time-Correlated Random Walk (CTCRW) model fit to satellite tracking from radio-collared adult female polar bears. All bears included in this data set were captured and
Counts of Birds in Aerial Photos from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019 Counts of Birds in Aerial Photos from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019
This dataset includes tables summarizing image information and bird counts from the aerial digital images taken over open water at Izembek Lagoon in Alaska in fall 2017-2019. These summaries list one record per image and provide the camera parameters, latitude, longitude, altitude, and automated and manual counts representing the total number of birds in each taxon (brant, white-cheeked...
Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Southern Beaufort Sea, 1986–2016 Polar Bear Continuous Time-Correlated Random Walk (CTCRW) Location Data Derived from Satellite Location Data, Southern Beaufort Sea, 1986–2016
This dataset consists of one table with predicted locations of adult female polar bears. Locations were derived by a Continuous Time-Correlated Random Walk (CTCRW) model using satellite tracking radio-collared adult female polar bears captured and instrumented in the southern Beaufort Sea, 1986–2016.
Nest Survival Bias Analysis Nest Survival Bias Analysis
This R script will run one replicate of one scenario used by Weiser (2021) to quantify biases in estimates of nest survival when nests are not found at the beginning of the nesting interval (age 0). The script simulates nest monitoring histories based on input parameters, applies models with or without an age effect to estimate daily survival rates, and calculates nest survival (to the...
Data and Model-based Estimates from Black Brant (Branta bernicla nigricans) Fall Age Ratio Surveys at Izembek Lagoon, Alaska Data and Model-based Estimates from Black Brant (Branta bernicla nigricans) Fall Age Ratio Surveys at Izembek Lagoon, Alaska
These data are in two tables relating to fall age ratios (number of juvenile birds : total birds aged) of Black brant (Branta bernicla nigricans) staging in Izembek Lagoon, Alaska since 1963. The first file is observation data for the birds' age classes during surveys and associated survey characteristics. The second file contains model-based estimates of age ratios by year along with SE...
Multistate Capture and Search Data from the Southern Beaufort Sea Polar Bear Subpopulation in Alaska, 2001-2016 Multistate Capture and Search Data from the Southern Beaufort Sea Polar Bear Subpopulation in Alaska, 2001-2016
This data release contains two tables of information on polar bear distributions in the southern Beaufort Sea during spring, from 2001 to 2016. One table provides location (classified into 5 broad regions) of individual bears during the spring. The other table presents the aerial search effort by year and area.
Habitat Selection Scenarios for Molting Waterfowl in the Goose Molting Area of the Teshekpuk Lake Special Area, for NPR-A Integrated Activity Plan/Environmental Impact Statement, 2020 Habitat Selection Scenarios for Molting Waterfowl in the Goose Molting Area of the Teshekpuk Lake Special Area, for NPR-A Integrated Activity Plan/Environmental Impact Statement, 2020
The dataset consists of a polygon shapefile. Each polygon represents a set of molt units (interconnected lakes used as habitat by molting waterfowl) within the Goose Molting Area of the Teshekpuk Lake Special Area in northern Alaska, in addition to a half-mile or 1-mile wide buffer, that were selected for restrictions on new surface occupancy or infrastructure development by the oil and...
Walrus Bayesian State-space Model Output from the Bering Sea and Chukchi Sea, 2008-2012 Walrus Bayesian State-space Model Output from the Bering Sea and Chukchi Sea, 2008-2012
State-space models offer researchers an objective approach to modeling complex animal location datasets, and state-space model behavior classifications are often assumed to have a link to animal behavior. We evaluated the behavioral classification accuracy of a Bayesian state-space model in Pacific walruses using Argos satellite tags outfitted with sensors to detect animal behavior in...