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Filters Contacts (Less) Alaska Science Center Ecosystems USGS ScienceBase Team U.S. Geological Survey - ScienceBase David H Ward U.S. Geological Survey U.S. Geological Survey Fort Collins Science Center Forest and Rangeland Ecosystem Science Center Sara J Oyler-McCance Bethany Bradley Todd B Cross Erich H Peitzsch Todd M Preston Jacob R. Krause Northern Rocky Mountain Science Center Anthony S Fischbach GS-NOROCK Data Steward Bradley C. Fedy David E. Naugle FORT Metadata Specialist Jeffrey R. Row Metadata Coordinator Michael K. Schwartz National Park Service - Southwest Alaska Inventory and Monitoring Network Sara J. Oyler-McCance U.S. Geological Survey, Fort Collins Science Center University of Alaska Fairbanks - College of Fisheries and Ocean Sciences Michael T Tate Ayodele O'uhuru Alison Williams Bradley C Fedy Jennifer M Fike New England Water Science Center Western Fisheries Research Center David C Douglas Robert W Dudley Collin A Eagles-Smith Mayumi Arimitsu Heather R Best Karen M Milone David E Naugle David P Krabbenhoft Luke P Sturtevant Sarah K Schoen Climate Adaptation Science Centers Toni Lyn Morelli Michael K Schwartz Vijay P Patil Brendan A Mccarthy More... View Results as: JSON ATOM CSV

Microsatellite data, boundaries of subpopulation centers, and estimated effective migration for greater sage-grouse collected in western North America between 1992 and 2015 (ver. 2.0, December 2022) Characterizing genetic structure across a species’ range is relevant for management and conservation as it can be used to define population boundaries and quantify connectivity. Here, we characterized population structure and estimated effective migration in Greater Sage-grouse (Centrocercus urophasianus). Our objectives were to (1) describe large-scale patterns of population genetic structure and gene flow and (2) to characterize genetic subpopulation centers across the range of Greater Sage-grouse. Samples from 2,134 individuals were genotyped at 15 microsatellite loci. Using standard STRUCTURE and spatial principal components analyses, we found evidence for four or six areas of large-scale genetic differentiation... Categories: Data, Data Release - Revised; Tags: Genetics, Subpopulation Center, USGS Science Data Catalog (SDC), Western North America, biota Data from Black Brant (Branta bernicla nigricans) Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico This data package includes two child items with data from Pacific Black Brant (Branta bernicla nigricans) during winter and migration periods. Child Item One: "Body mass, Morphological Measurements, Flock Counts, and Age-Ratios from Black Brant Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico". The data include: (1) body mass and morphological measurements from sport hunter harvested brant, and (2) census counts of brant in Bahia de San Quintin, (3) counts for flock age ratio determination, and (4) behavior. Child Item Two: "Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico". Data from brant tagged with VHF radio transmitters in July 1999 on... Categories: Data, Data Release - Revised; Tags: Alaska, Animal populations, Animals/Vertebrates, Bahia San Quintín, Baja California, All tags... Baja California Sur, Biota, Birds, Black Brant, Branta bernicla nigricans, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Izembek National Wildlife Refuge, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Yukon Delta, Yukon Delta National Wildlife Refuge, Yukon Kuskokwim Delta, Fewer tags Ken Pierce's Legacy Field Notebooks and Annotated Aerial Photographs, Geological, and Topographical Maps from Across the Western United States 1963-2021 (ver. 2.0, January 2024) Ken Pierce was a Research Geologist with the U.S. Geological Survey for over 55 years and authored numerous scientific papers, geologic maps, and field trip guides. This data release contains digital scans of 64 field notebooks 713 annotated aerial photographs, and 640 annotated geologic and topographic maps authored or annotated by Ken Pierce or his collaborators. Information contained in these notebooks, aerial photographs, and maps provide much of the underpinning of Ken Pierce's research, which focused largely on the glacial and geomorphological history of Yellowstone National Park and surrounding areas. Categories: Data, Data Release - Revised; Tags: Grand Teton National Park, Idaho, Montana, USGS Science Data Catalog (SDC), USGS:63af4e9fd34e92aad3ca60c7, All tags... Wyoming, Yellowstone National Park, geology, geomorphology, geoscientificInformation, glaciology, Fewer tags Genetic data and genetic network attributes for rangewide Greater Sage-grouse network constructed in 2018 (ver. 2.0, December 2022) Genetic networks can characterize complex genetic relationships among groups of individuals, which can be used to rank nodes most important to the overall connectivity of the system. Ranking allows scarce resources to be guided towards nodes integral to connectivity. The greater sage-grouse (Centrocercus urophasianus) is a species of conservation concern that breeds on spatially discrete leks that must remain connected by genetic exchange for population persistence. We genotyped 5,950 individuals, from 1,200 greater sage-grouse leks distributed across the entire species’ geographic range. We found a small world network composed of 458 nodes connected by 14,481 edges that are described here. The files associated... Categories: Data, Data Release - Revised; Tags: USGS Science Data Catalog (SDC), Western North America, biological population management, biota, centrality, All tags... genetic diversity, graph theory, multi-scale conservation prioritization, network theory, Fewer tags Pacific Walrus Coastal Haulout Images from Remote Camera Stations This data package contains 362 digital photos of a walrus haulout location at Cape Greig, on the Alaska Peninsula summer 2023 (2023-05-09 23:01:08 UTC through 2023-11-16 21:01:14 UTC). Photos were taken up to three times daily from a remotely operated camera located on a bluff above the haulout. The camera station was installed in the early spring 2023, prior to arrival of walruses at the site. Images are transferred via satellite link. Version History: First release: June 2023 Revised: January 2024 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Animals/vertebrates, Bering Sea, Biota, Cape Greig, All tags... Carnivores, Coastal ecosystems, Environment, Field inventory and monitoring, Image collections, Mammals, Marine ecosystems, Marine mammals, Migratory species, Odobenus rosmarus divergens, Pacific Walrus, Pinniped, Remote photo imagery, Remote sensing, Seals/sea lions/walruses, Seasonal distribution, USGS Science Data Catalog (SDC), Walrus, Wildlife, Wildlife Biology, Fewer tags Avalanche occurrence records along the Going-to-the-Sun Road, Glacier National Park, Montana from 2003-2023 (ver. 3.0, July 2023) Starting in 2003, the U.S. Geological Survey (USGS) Northern Rocky Mountain Science Center in West Glacier, MT, in collaboration with the National Park Service, collected avalanche observations along the Going to the Sun Road during the spring road-clearing operations. The spring road-clearing along Going to the Sun Road utilized a team of avalanche specialists from the USGS and Glacier National Park to communicate the potential avalanche hazard to crews working to clear the road of snow in preparation for summer visitation. The operations typically begin around April 1st and continue through mid-June each year. The dataset includes all of the specific details collected for each avalanche occurrence and conforms... Categories: Data, Data Release - Revised; Tags: CCME-avalanche, Glacier National Park, Going-to-the-Sun Road, Montana, North West Montana, All tags... USGS Science Data Catalog (SDC), United States, climatologyMeteorologyAtmosphere, cryosphere, environment, field inventory and monitoring, geomorphology, snow, snow and ice cover, snow avalanche, Fewer tags Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico This is a child item of the USGS Data Release: https://doi.org/10.5066/F7T43R88 This data package provides data from Pacific Black Brant (Branta bernicla nigricans) tagged with VHF radio transmitters in July 1999 on the Yukon Kuskokwim Delta, Alaska and detected in the following two years during their annual migration. Data include: 1) one table with attributes of the tagged brant, 2) one table with estimated dates of migration events, and 3) seven tables of detection data from radio tracking scans at coastal sites between Alaska and Mexico. Version History: First release: April 2023 Revised: February 2024 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Animal populations, Animals/Vertebrates, Bahia San Quintín, Baja California, All tags... Baja California Sur, Biota, Birds, Black Brant, Branta bernicla nigricans, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Izembek National Wildlife Refuge, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Yukon Delta, Yukon Delta National Wildlife Refuge, Yukon Kuskokwim Delta, Fewer tags Computed Streamflow Using Satellite Data for Selected Rivers in Alaska This dataset provides computed remotely-sensed streamflows (RSQ) at river reaches of selected rivers in Alaska. We used the relation between water-surface elevation data derived from satellite altimetry and dynamic surface water extent data derived from LANDSAT and Sentinel imagery data with the Modified Optimized Manning Method Algorithm (MOMMA) to compute remotely sensed streamflows. Data are organized in ZIP packages named for each river reach. Reach-specific details are provided in a README file included in each river reach ZIP package. Depending on the input data available for specific reaches, we used different workflows to estimate river reach width and process the data from river reaches. Each workflow... Categories: Data, Data Release - Revised; Tags: Alaska, Altimetry measurement, Canning River, Colville River, Copper River, All tags... Elevation, Holitna River, Hydrology, InlandWaters, Innoko River, Kantishna River, Knik River, Koyukuk River, Kuskokwim River, Multispectral imaging, Nushagak River, Porcupine River, Remote Sensing, Remote sensing, Streamflow, Susitna River, Tanana River, USGS Science Data Catalog (SDC), Water Resources, Yukon River, Fewer tags Genetic and functional connectivity data for greater sage-grouse across the species range generated 2005–2015 (ver. 2.0, December 2022) Functional connectivity, quantified using landscape genetics, can inform conservation through the identification of factors linking genetic structure to landscape mechanisms. We used breeding habitat metrics, landscape attributes, and indices of grouse abundance, to compare fit between structural connectivity and genetic differentiation within five long-established Sage-Grouse Management Zones (MZ) I–V using microsatellite genotypes from 6,009 greater sage-grouse (Centrocercus urophasianus) collected across their range. We estimated structural connectivity using a circuit theory-based approach where we built resistance surfaces using thresholds dividing the landscape into “habitat” and “nonhabitat” and nodes were... Categories: Data, Data Release - Revised; Tags: USGS Science Data Catalog (SDC), Western North America, biota, landscape genetics Data from Common Murre Die-off Surveys and Necropsies Following the North Pacific Marine Heatwave, 2015-2016 These data are in two tables relating to a die-off of Common Murres (Uria aalge) in the north Pacific, 2015-2016. The tables provide: 1) beach survey locations, date, time, distance surveyed (kilometers), and number of Common Murre carcasses observed during surveys conducted along the coastline of Alaska to document the 2015-2016 die-off of Common Murres coincident with the North Pacific marine heatwave, and 2) Common Murre necropsy results from carcasses collected during the die-off, including: bird identification number, collection date, collection location, and body and tissues measurements. Version History: First release: January 2020 Revised: June 2024 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Alaska Peninsula, Aquatic ecosystems, Biota, Coastal ecosystems, All tags... Coastal habitat, Common Murre, Die-off, Environment, Field inventory and monitoring, Gulf of Alaska, Kenai Fjords, Kenai Peninsula, Marine ecosystems, Marine habitat, Mortality, Mortality event, Necropsy, Prince William Sound, Specimen collecting, USGS Science Data Catalog (SDC), Uria aalge, Wildlife Biology, Wildlife biology, Fewer tags Bird Species Checklists from USGS Alaska Science Center Field Camps These data are daily summary checklists of all bird species observed at U.S. Geological Survey, Alaska Science Center (ASC) field camps. Data include species observation details such as observers, dates, location, and number of individuals seen. Field camps were located in Northern, Western, Interior, Southwest, Southcentral, and Southeast Alaska, Baja California Sur Mexico, and northern Russia. Version History: First release: May 2021 Revised: February 2022 (ver. 2.0) Revised: February 2023 (ver. 3.0) Categories: Data, Data Release - Revised; Tags: Alaska, Albatrosses/Petrels and Allies, Animals/Vertebrates, Bahia San Quintin, Baja California Sur, All tags... Biota, Birds, Coastal ecosystems, Cranes, Ducks/Geese/Swans, Eagles/Falcons/Hawks and Allies, Ecology, Environment, Fowl, Game birds, Laguna Ojo de Liebre, Laguna San Ignacio, Loons, Mexico, Migration (organisms), Migratory birds, Migratory rates/routes, Migratory species, Owls, Perching Birds, Raptors, Russia, Sakha Republic, Sandpipers, Santa Rosalia, Seabirds, Seasonal distribution, Shorebirds, Songbirds, Tundra ecosystems, USGS Science Data Catalog (SDC), United States, Waders/Gulls/Auks and Allies, Waterfowl, Wetland ecosystems, Wildlife, Wildlife Biology, Fewer tags 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 table is observation data for the age classes of Black Brant during surveys, and associated survey characteristics. The second table contains model-based estimates of age ratios by year along with Standard Error (SE), and 95% Bayesian credible intervals around estimates. Version History: First release: March 2020 Revised: December 2020 (ver. 2.0) Revised: December 2021 (ver. 3.0) Revised: January 2023 (ver. 4.0) Revised: December 2023 (ver. 5.0) Categories: Data, Data Release - Revised; Tags: Alaska, Animal populations, Animals/Vertebrates, Biota, Birds, All tags... Black Brant, Branta bernicla nigricans, Brent Goose, Computational methods, Ecological dynamics, Environment, Izembek Lagoon, Izembek National Wildlife Refuge, Mathematical modeling, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, Wildlife Biology, Wildlife biology, Fewer tags Northeast Sleeper Species Database (ver. 2.0, May 2024) Sleeper populations are established populations of introduced species whose population growth is limited by one or more abiotic or biotic conditions. Sleeper populations pose an invasion risk if a change in those limiting conditions, such as climate change, enables population growth and invasion. With thousands of established species, it is critical that we identify and prioritize potential sleepers. Here, we identified non-native plants established in the northeastern United States with high impacts and the potential to expand with climate change. We focused on 118 taxa regulated by one or more state outside the Northeast plus 61 taxa recorded as invasive globally and under consideration for regulation in the Northeast.... Categories: Data, Data Release - Revised; Tags: Northeast United States, USGS Science Data Catalog (SDC), biota, climate change, invasive plants, All tags... population growth, sleeper species, Fewer tags Body mass, Morphological Measurements, Flock Counts, and Age-Ratios from Black Brant Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico This is a child item of the USGS Data Release: https://doi.org/10.5066/F7T43R88 This data package includes four tables of data from Pacific Black Brant (Branta bernicla nigricans) wintering along the Baja California Peninsula and Sonoran coasts of Mexico. The data include: (1) body mass and morphological measurements from sport hunter harvested brant, and (2) census counts of brant in Bahia de San Quintin, (3) counts for flock age ratio determination, and (4) behavior. Version History: First release: April 2023 Revised: February 2024 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Animal populations, Animals/Vertebrates, Bahia San Quintín, Baja California, Baja California Sur, All tags... Biota, Birds, Black Brant, Branta bernicla nigricans, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Fewer tags Black Oystercatcher Nest and Diet Data from Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset is comprised of six comma separated values (.csv) file exported from a relational database. The data consist of: 1) transect summary, 2) nest details, 3) egg float and stage data, 4) chicks diets, 5) chick diet taxonomy, and 6) Gulf Watch Alaska contributors. Version History: First release: April 2017 Revised: November 2023 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Animals/vertebrates, Aquatic biology, Aquatic ecosystems, Biota, All tags... Black Oystercatcher, Chicks, Coastal ecosystems, Coastal habitat, Community Ecology, Diets, Ecology, Ecology, Environment, Field inventory and monitoring, Field sampling, Gulf of Alaska, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Macroinvertebrates, Marine ecosystems, Marine environment monitoring, Marine environments, Nearshore ecology, Prince William Sound, Productivity, Shorebirds, Size distribution, Spatial distribution, Trophic dynamics, USGS Science Data Catalog (SDC), Waders/Gulls/Auks and allies, Wildlife, Wildlife Biology, Fewer tags Pacific Walrus Coastal Haulout Occurrences Interpreted from Satellite Imagery This dataset is derived from images from a variety of Earth observing satellite imagery sources collected at known walrus coastal haulouts in Alaska and Chukotka, Russia. Earth observing imagery sources used in this data release include (but are not limited to) optical imagery collections by: (1) the European Space Agency's Sentinel-2 mission, (2) the Plant Labs Planet Scope constellation, and (3) Maxar satellites, as well as synthetic aperture radar imagery collected by: (1) European Space Agency's Sentinel-1 mission, (2) the DLR (German Aerospace Agency) TerraSAR-X satellite, (3) the Umbra Space satellite constellation, (4) the Canadian Radarsat-2 satellite, (5) the Capella Space satellite constellation and (6)... Categories: Data, Data Release - Revised; Tags: Alaska, Animals/Vertebrates, Biota, Carnivores, Chukchi Sea, All tags... Chukotka, Coastal ecosystems, Environment, Field inventory and monitoring, Image collections, Mammals, Marine ecosystems, Marine mammals, Migratory species, Odobenus rosmarus divergens, Pacific Walrus, Pinniped, Remote sensing, Russia, Satellite imagery, Seals/sea lions/walruses, Seasonal distribution, USGS Science Data Catalog (SDC), Walrus, Wildlife, Wildlife Biology, Fewer tags Mercury Concentrations and Mercury Isotopes in Salmonid fishes from the Snake River and tributaries in Idaho and Oregon, 2015 and 2019 (ver. 2.0, February 2021) Comma-separated values (.csv) file containing data related to mercury in Salmonid fishes collected from the Snake River and tributaries, Idaho and Oregon. Categories: Data, Data Release - Revised; Tags: Imnaha River, OR, Indian Creek, ID, Oxbow Bypass, Snake River, ID/OR, Oxbow Outflow, Snake River, ID/OR, biota, All tags... chemical analysis, contamination and pollution, environment, fishes, mercury levels, Fewer tags PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2023 (ver. 2.0, August 2023) Note: this data release has been superseded by version 3.0, available here: https://doi.org/10.5066/P1385SV2 Data were collected as part of a long-term capture-recapture program to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon and Clear Lake Reservoir, California. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995.PIT tagged species were encountered in netting efforts, remote transceivers, and active scanning on bird colonies across the Upper Klamath River... Categories: Data, Data Release - Revised; Tags: Aquatic Biology, Clear Lake National Wildlife Refuge, USGS Science Data Catalog (SDC), Upper Klamath Lake, animal tracking, All tags... ecology, endangered species, inlandWaters, salmonids, suckers, Fewer tags Intertidal Temperature Data from Kachemak Bay, Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program. This dataset consists of date, time, and temperature measurements from intertidal rocky sampling sites, including predicted tide height at the time of the reading, which is used to distinguish air from water temperature readings. The data are provided as comma separated values (.csv) files derived from data downloaded from HOBO temperature loggers. This versioned data release supersedes two previous nearshore temperature USGS data releases (https://doi.org/10.5066/F7WH2N3T and https://doi.org/10.5066/F77S7KXH). The data provided in this release includes all data from past releases as well as new data collected after 2017 for KBAY,... Categories: Data, Data Release - Revised; Tags: Air temperature, Alaska, Alaska Peninsula, Aquatic Biology, Atmospheric/Ocean Indicators, All tags... Biospheric indicators, Biota, Coastal ecosystems, Ecology, Environment, Gulf of Alaska, Intertidal environments, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Kenai Peninsula, Marine ecosystems, Ocean heat budget, Ocean temperature, Prince William Sound, Sea surface temperature, Temperature indicators, Temperature trends, Temperature variability, Transect sampling, USGS Science Data Catalog (SDC), Fewer tags