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Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 This dataset contains taxonomic information, counts, and lengths of macroinvertebrates collected from rivers in northwest Alaska using drift and kick nets during summer and fall 2015-2019. Version History: First release: February 2024 Revised: August 2024 (ver. 1.1) Revised: December2024 (ver. 1.2) Categories: Data, Data Release - Revised; Tags: Actinopterygii, Age composition, Alaska, Animals/Invertebrates, Animals/Invertebrates, All tags... Aquatic Biology, Aquatic Invertebrates, Aquatic ecosystems, Arachnida, Arctic, Arthropods, Arthropods, Biota, Bivalvia, Clitellata, Ecology, Entognatha, Environment, Freshwater ecosystems, Gastropoda, InlandWaters, Insecta, Macroinvertebrates, Nemata, Turbellaria, USGS Science Data Catalog (SDC), Water Quality, Fewer tags Pacific Common Eider (Somateria mollissima v-nigrum) Nest Records, Yukon-Kuskokwim Delta, Alaska, 1991-2004 This data are a single table of nest records from a multi-year study of Pacific Common Eider (Somateria mollissima v-nigrum) biology that was conducted along the lower Kashunuk River, Kigigak Island, and the mouth of the Tutakoke River on the Yukon-Kuskokwim Delta from 1991-2004. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Breeding sites, All tags... Coastal ecosystems, Common Eider, Ducks/Geese/Swans, Ecology, Environment, Migratory birds, Nesting behavior, Nesting success, Nesting success, Reproductive success, Terrestrial ecosystems, Tundra ecosystems, USGS Science Data Catalog (SDC), Waterfowl, Wetland ecosystems, Wildlife, Wildlife Biology, Yukon Delta, Fewer tags Common Eider Blood Chemistry Data, Alaska, 2004-2006 This data set contains information on blood chemistry and hematological parameters of captive Pacific Common Eiders (Somateria mollissima v-nigrum) for reference periods and after satellite transmitter implantation. These data were collected for health assessments, to evaluate seasonal changes in regularly measured biomarkers, to assess the physiological responses to dive conditioning, and to measure responses to surgical implantation of a satellite transmitter. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biomarker, Biota, Birds, All tags... Blood chemistry, Common Eider, Ecology, Environment, Genetics, Hematology, Platform transmitter terminal, Radio telemetry, Sea duck, Seward, Somaterial mollissima, Transmitter effect, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Wildlife Disease, Yukon-Kuskokwim Delta, Fewer tags Black Brant Banding and Recovery Encounter Histories, Alaska, 1990-2016 This data contains two tables of live-dead encounter histories of Black Brant geese banded 4 breeding locations in the Arctic of northern Alaska and western Canada and one sub-Arctic location, the Tutakoke River colony on the Yukon-Kuskokwim Delta of Alaska, from 1990 to 2016. Categories: Data; Tags: Alaska, Anderson River Delta, Animals/Vertebrates, Banks Island, Biota, All tags... Birds, Brant, Canada, Colville River Delta, Ecology, Environment, Field inventory and monitoring, Kuparuk River, Melville Island, Prudhoe Bay, Relative abundance analysis, Survival, USGS Science Data Catalog (SDC), Waterfowl, Waterfowl, Wildlife Biology, Yukon Kuskokwim Delta, Fewer tags Bristle-Thighed Curlew (Numenius tahitiensis) Mark-Resight Encounter History from the James Campbell National Wildlife Refuge and Surrounding Area, Oahu, Hawaii, 2012-2017 This data set contains one table with mark-resight observations of Bristle-thighed Curlews marked on Oahu, Hawaii, with plastic color leg flags, 2012-2017. Categories: Data; Tags: Animals/Vertebrates, Biota, Birds, Bristle-thighed Curlew, Capturing (animals), All tags... Ecology, Environment, Hawaii, Numenius tahitiensis, Oahu, Plant and animal tagging, Population dynamics, Shorebird, Survival rates, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags Seward Peninsula Airborne Electromagnetic Survey, Kigluiak, Bendeleben, and Darby Mountains Seward Peninsula airborne electromagnetic survey, Kigluiak, Bendeleben, and Darby Mountains, Geophysical Report 2024-2, covers parts of the Teller, Bendeleben, Nome, and Solomon 1:250,000-scale U.S. Geological Survey (USGS) quadrangles on the Seward Peninsula north of Nome, Alaska. Time-domain electromagnetic data were collected with the SkyTEM 306HP system, which was towed by a helicopter, from September 8 to October 3, 2023, and from June 5 to July 18, 2024. A total of 4,330-line kilometers (km) were collected covering 4,817 km2. The survey was flown with semi-parallel lines spaced approximately 1 km apart and oriented perpendicular to regional geologic strike. Electromagnetic data were used to create resistivity... Categories: Data; Tags: Aeromagnetic, Aeromagnetic Data, Aeromagnetic Map, Aeromagnetic Survey, Airborne Geophysical Survey, All tags... Analytic Signal, Bendeleben Mountains, Bunker Hill, Central River, Chauik Mountain, Cobblestone River, Copper Mountain, Council Mining District, Crater Lake, DGGS, Darby Mountains, Exploration, Feather River, Fish River, Geologic, Geology, Geophysical Map, Geophysical Survey, Geophysics, Geophysics Search Tag, Grand Central River, Grand Singatook, Grass Valley, Gridded Data, Imuruk Basin, Kigluaik Mountains, Kougarok Mining District, Kougarok River, Koyuk Mining District, Kuzitrin Lake, Kuzitrin River, Libby River, Line Data, Magnetic Data, Magnetic Survey, Magnetics, Mineral Resources, Mosquito Pass, Mount Bendeleben, Mount Osborn, Mount Ost, Niukluk River, Nome Mining District, Nome River, Omiaktalik Lake, Omilak, Omilak Mountain, Pargon River, Pilgrim River, Pilgrim Springs, Port Clarence Mining District, Remote Sensing, Salmon Lake, Seward Peninsula, Sinuk, Sinuk River, Tigaraha Mountain, Tisuk River, Tubutulik River, USGS Science Data Catalog (SDC), White River, Wild Goose Pipeline, geoscientificInformation, Fewer tags Assessing the Robustness of Quantitative Fatty Acid Signature Analysis to Assumption Violations (Supplementary Data) This dataset contains fatty acid (FA) data expressed as mass percent of total FA for bearded seals, ringed seals and walrus. This is one of many datasets used in Bromaghin et al. 2016 (https://doi.org/10.1111/2041-210X.12456). These supplemental data were used in computer simulations to compare the bias of several quantitative fatty acid signature analysis (QFASA) estimators and develop recommendations regarding estimator selection. Categories: Data; Tags: Alaska, Animals/Vertebrates, Arctic, Bearded seal, Bears, All tags... Biological informatics, Biota, Carnivores, Chukchi Sea, Coastal ecosystems, Diet composition, Diet estimation, Diets, Environment, Erignathus barbatus, Fatty Acids, Mammals, Marine ecosystems, Marine mammals, Pelagic habitat, Pinniped, Polar bear, Predator-prey, Pusa hispida, QFASA, Quantitative fatty acid signature analysis, Ringed seal, Seals/Sea lions/Walruses, USGS Science Data Catalog (SDC), Ursus maritimus, Wildlife, Wildlife Biology, Fewer tags Avian Demographic Data from the Colville River Delta, Alaska This data release contains multiple tables with information on avian demographics collected at the Colville River Delta, Alaska, 2011-2018. Researchers with the U.S. Geological Survey began studying the reproductive ecology of birds at a site on the Colville River near the Beaufort Sea coast in 2011. Researchers monitored the nests of geese, shorebirds, and landbirds at this study site, determining basic information like arrival dates, nest initiation date, clutch size, hatching success, and rates of chick growth. This release also contains first arrival observations of birds collected by Jim and Teena Helmericks from 1960-2019 at their house located ~15 km northeast of the USGS field camp. Categories: Data; Tags: Alaska, Animal morphology, Animals/Vertebrates, Arctic Coastal Plain, Biota, All tags... Birds, Breeding success, Colville River Delta, Ducks/Geese/Swans, Eagles/Falcons/Hawks and Allies, Ecology, Environment, Growth rate, Loons, Migratory birds, Migratory species, Nesting success, Perching Birds, Phenology, Sandpipers, Shorebirds, Songbirds, Species life history, Terrestrial ecosystems, Tundra ecosystems, USGS Science Data Catalog (SDC), Waders/Gulls/Auks and Allies, Waterfowl, Wetland ecosystems, Wildlife, Wildlife Biology, Fewer tags Intertidal and Subtidal Sea Otter Prey Sampling in Mixed Sediment Habitat in Glacier Bay National Park and Preserve, Alaska, 1998 to 2011 This dataset provides clam species abundance and size data from intertidal and subtidal mixed sediment habitats in Glacier Bay National Park and Preserve (GBNPP). Data are provided for all observed clams, horse mussels, or urchins 14 mm or larger. Sampling involved excavating 25 cm of substrate from quadrats (approximately 0.25 sq meter) along transects at random and selected sites, 10 quadrats at the 0 Mean Lower Low Water (MLLW) tide level for intertidal sampling and 20 quadrats at approximately 9 m depth for subtidal sampling. Site and taxonomic information are provided. Abundance and size data are provided in two tables with different data configurations: (1) a compact version with data for those species observed... Categories: Data, Data Release - Revised; Tags: Alaska, Animal and plant census, Aquatic Biology, Aquatic biology, Benthic habitat, All tags... Benthos, Biota, Bivalves, Clam, Coastal ecosystems, Ecology, Environment, Glacier Bay National Park and Preserve, Macroinvertebrates, Marine ecosystems, Mollusks, Mollusks, Sea urchin, Trophic relationships, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Data Supporting Studies of Waterbird and Arctic Lake Ecosystems within the National Petroleum Reserve-Alaska, 1974-1992 This data package presents raw legacy data collected during 1974-1992 on the Arctic Coastal Plain (primarily in the National Petroleum Reserve - Alaska; NPR-A). The data were collected in support of a long-term multi-species wetland ecosystem study that aimed to provide an understanding of occurrence and densities of bird, mammal, fish, invertebrate, and plant species. The study included the Teshekpuk Lake Special Area (TLSA), as well as focused studies on individual lakes or regions within the special area, including: East Long Lake, West Long Lake, Goose Lake, Island Lake, Square Lake, Meade River (Singiluk), Point Storkersen, and Icy Cape. The study included 10 primary objectives: 1) complete daily weather records,... Categories: Data, Data Release - Revised; Tags: Alaska, Alpine/Tundra, Angiosperms (flowering plants), Animal behavior, Animal response, All tags... Animals/Vertebrates, Benthic habitat, Biota, Birds, Birds, Botany, Carex spp., Coastal ecosystems, Coastal habitat, Dominant species, Dryas spp., East Long Lake, Ecology, Ecology, Environment, Environmental impacts, Eriophorum spp., Field activity logs, Field inventory and monitoring, Field sampling, Goose Lake, Grazing, Herbivores, Herbivory, Icy Cape, Image collections, Infrastructure, Island Lake, Lacustrine wetlands, Lakes, Landscape ecology, Mammals, Marshes, Meade River, Migratory birds, NPR-A, NPRA, National Petroleum Reserve - Alaska, Palustrine wetlands, Plant phenology, Plants, Point Storkersen, Relative abundance, Riparian wetlands, Salix spp., Singiluk Camp, Snow/Ice, Square Lake, Terrestrial ecosystems, Teshekpuk Lake, Teshekpuk Lake Special Use Area, Trophic dynamics, Tundra ecosystems, USGS Science Data Catalog (SDC), Vaccinium spp., Vegetation species, Waterfowl, West Long Lake, Wildlife, Wildlife Biology, Fewer tags Child Item 4: Behavior and Diet Data Derived from Video Camera Collars on Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022 This is a child item of the USGS Data Release: https://doi.org/10.5066/P9A7ITFH This dataset is one table with time-linked behavior data derived from video camera collars on polar bears on land near Churchill, Manitoba, Canada. Eighteen polar bears were equipped with video-camera collars (Vertex Plus collar with camera option, Vectronic Aerospace GmbH, Berlin, Germany) for 19 - 23 days in 2019, 2021, and 2022. Categories: Data, Data Release - Revised; Tags: Animal behavior, Animals/Vertebrates, Bears, Bioenergetics, Biogeography, All tags... Biota, Canada, Carnivores, Coastal ecosystems, Environment, Hudson Bay, Mammals, Marine ecosystems, Marine mammals, Metabolism, Polar bear, Species Life History, USGS Science Data Catalog (SDC), Ursus maritimus, Use/Feeding habitat, Wildlife, Wildlife Biology, Fewer tags Sea Otter Forage Observations 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 component and a seasonal diet study in Kenai Fjords National Park. This dataset consists of observations made of foraging sea otters (Enhydra lutris). Observers used Questar field model spotting scopes and binoculars to identify prey. Date, local time, dive duration, success, prey type, prey size, prey number, handling time and surface time were all recorded. Sites are in Alaska and include locations in Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park and Prince William Sound. The data in this file were collected from 2012—2024. Version History: First release: March 2017 Revised: November 2024 (ver.... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Animals/Invertebrates, Animals/Vertebrates, Aquatic ecosystems, Aquatic ecosystems, All tags... Benthic ecosystems, Benthic habitat, Biota, Coastal ecosystems, Coastal habitat, Ecology, Ecology, Environment, Field inventory and monitoring, Field sampling, Foraging behavior, Gulf of Alaska, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Macroinvertebrates, Marine benthic invertebrates, Marine biology, Marine ecosystems, Marine environment monitoring, Marine environments, Northern Sea Otter, Predator-prey interactions, Prey selection, Prince William Sound, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Observational Data of Migratory Birds during Spring and Fall Migration and their use of Habitats in the Yakutat Foreland of Alaska in 1980 This data package supports raw legacy data collected during 1980 on the Yakutat Forelands of Alaska. The data were collected to support a short-term study of waterbird migration patterns and habitat use during spring (April - May) and fall (August - October). The primary objectives of the study included: 1) determine the timing and rates of migration by waterbirds; 2) correlate observed patterns of migration with weather; 3) determine the use of estuarine and riverine systems by waterbirds during migration; 4) determine the use of wetlands and deep-water habitats by migrant waterfowl and shorebirds. Data is available upon request by contacting gs-ak_asc_datamanagers@usgs.gov About the Legacy Data In spring and fall... Categories: Data; Tags: Alaska, Albatrosses/Petrels and Allies, Animals/Vertebrates, Aves, Biota, All tags... Birds, Checklists, Community ecology, Cranes, Ducks/Geese/Swans, Eagles/Falcons/Hawks and Allies, Ecology, Ecology, Environment, Field activity logs, Field inventory and monitoring, Habitat preferences, Habitats, Image collections, Loons, Mammalia, Mammals, Maps and atlases, Marine mammals, Migratory birds, Migratory rates/routes, Owls, Passerines, Perching Birds, Porpoises, Raptors, Sandpipers, Seabirds, Seals/Sea lions/Walruses, Seasonal distribution, Seasons, Shorebirds, Spatial distribution, Terrestrial mammals, USGS Science Data Catalog (SDC), United States, Waders/Gulls/Auks and Allies, Waterfowl, Whales, Wildlife Biology, Yakutat, Fewer tags Sounding Cross Section Surveys at Alaska Bridge Crossings Since 1993 the U.S. Geological Survey (USGS) has worked with the Alaska Department of Transportation and Public Facilities (ADOT&PF) to provide hydraulic assessments of scour for bridges throughout Alaska. As part of this effort, repeat channel cross section surveys, or channel soundings, have been collected at either the upstream or downstream side of bridges on an annual or as needed basis. Streambed and bank elevations are measured using USGS sounding weights and reels, weighted measuring tapes, acoustic Doppler current profilers, multibeam echo sounders and light detection and ranging and are referenced to the datum of as-built plan set to provide context for the streambed elevations in relation to bridge structures.... Categories: Data, Data Release - Revised; Tags: ADCP, Acoustic Doppler Current Profiling, Alaska, Bridges, Discharge/flow, All tags... Geomorphology, Hydrology, Hydrology, InlandWaters, Rivers/streams, Scour, Streambed, Terrestrial Hydrosphere, USGS Science Data Catalog (SDC), Water Resources, Fewer tags Measurements Used to Determine the Sex of Bristle-thighed Curlews (Numenius tahitiensis) This data set contains bill and tarsal measurements from 114 Bristle-thighed Curlews, captured on breeding grounds in Alaska, and non-breeding areas in Hawaii and Reitoru atoll, French Polynesia. Categories: Data; Tags: Alaska, Animals, Animals/Vertebrates, Biota, Birds, All tags... Birds, Bristle-thighed Curlew, Capturing (animals), Ecology, Environment, Field methods, Field sampling, Hawaii, Life sciences, Moloka'i, Morphometrics, Nulato Hills, Numenius tahitiensis, O'ahu, Organisms, Ornithology, Plant and animal tagging, Population dynamics, Reitoru, Sciences, Seward Peninsula, Shorebird, Survival, Survival rates, USGS Science Data Catalog (SDC), Vertebrate zoology, Vertebrates, Wildlife Biology, Zoology, Fewer tags Child Item 1: GPS Location Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022 This is a child item of the USGS Data Release: https://doi.org/10.5066/P9A7ITFH This dataset is one table with GPS locations collected by satellite-linked GPS receivers on collars (Vertex Plus collar with camera option, Vectronic Aerospace GmbH, Berlin, Germany) attached to 20 polar bears that were instrumented on land near Churchill, Manitoba, Canada for 19 - 23 days in 2019, 2021, and 2022. Categories: Data, Data Release - Revised; Tags: Animal behavior, Animals/Vertebrates, Bears, Bioenergetics, Biogeography, All tags... Biota, Canada, Carnivores, Coastal ecosystems, Environment, Hudson Bay, Mammals, Marine ecosystems, Marine mammals, Metabolism, Polar bear, Species Life History, USGS Science Data Catalog (SDC), Ursus maritimus, Use/Feeding habitat, Wildlife, Wildlife Biology, Fewer tags Glacier Bay National Park and Preserve Sea Otter Forage Data, 1993-2019 These data describe observations of sea otter foraging behavior in Glacier Bay National Park and Preserve. Data consist of dive and surface times, success in prey retrieval, prey item, prey quantity, and size. Additionally, location of observations, and age class, sex, and pup status of the focal sea otter were also recorded. Categories: Data; Tags: Alaska, Animals/Invertebrates, Animals/Vertebrates, Benthic ecosystems, Biota, All tags... Coastal ecosystems, Coastal ecosystems, Ecology, Enhydra lutris, Environment, Foraging behavior, Glacier Bay National Park and Preserve, Gulf of Alaska, Macroinvertebrates, Marine benthic invertebrates, Marine ecology, Marine ecosystems, Marine environment monitoring, Prey, Prey selection, Sea otters, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012 The data package "Sea Otter Aerial Survey Data from Glacier Bay National Park and Preserve, 1999-2012" provides raw data for examining abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in Glacier Bay National Park and Preserve in southeast Alaska, based on data collected during a series of population-wide aerial surveys. The USGS aerial sea otter surveys have been completed multiple times using consistent methodology involving aerial-based counts. The surveys provide data and a population estimate that Park and other Federal management agencies use for decision making and planning additional research. This data package includes a series of files with the raw digital data that was used for... Categories: Data; Tags: Abundance (organisms), Aerial surveys, Alaska, Animals/Vertebrates, Biota, All tags... Carnivores, Ecology, Ecology, Ecosystem monitoring, Environment, Glacier Bay National Park and Preserve, Gulf of Alaska, Marine mammals, Marine mammals, Population density, Population dynamics, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags Data from Bristle-thighed Curlews at James Campbell National Wildlife Refuge, O'ahu, Hawaii, 2012-2014 This data package includes two tables of data for Bristle-thighed curlews (Numenius tahitiensis) captured 2012-2014 on the James Campbell National Wildlife Refuge O'ahu, Hawaii (21.68 N, 157.95 W). One table provides capture, banding, morphology, and genetic data. The second table provides mark-resight data for estimating the size of the wintering population on Oahu in April of 2014. Version History: First release: July 2016 Revised: September 2019 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Animals/Vertebrates, Biota, Birds, Capture-recapture studies, DNA sequencing, All tags... Ecology, Environment, Field sampling, Gene flow, Genetic structure, Genetics, Genetics, Hawaii, James Campbell National Wildlife Refuge, Life sciences, Oahu, Ornithology, Plant and animal tagging, Population dynamics, Population genetics, Population number, Shorebird, Survival rates, USGS Science Data Catalog (SDC), Vertebrate zoology, Wildlife Biology, Fewer tags Waterfowl Lead Exposure Data in Alaska and Russia, 1993-2022 This dataset identifies lead (Pb) concentration found in the blood of waterfowl sampled in western and northern Alaska and eastern Russia between 1993 and 2022. Data include age, sex, body measurement, capture location, presence or absence of lead shot on x-rays, and blood lead levels. Because the study took place over a number of years at the same study sites, many of the same birds were sampled in multiple years. Categories: Data; Tags: Alaska, Animals/Vertebrates, Aythya marila, Biota, Birds, All tags... Clangula hyemalis, Coastal ecosystems, Colville River Delta, Common eider, Ducks/Geese/Swans, Ecology, Environment, Environmental Health, Environmental conditions, Freshwater ecosystems, Greater scaup, Indigirka River, Kashunuk River, King eider, Lead, Long-tailed duck, Polysticta stelleri, Population dynamics, Prudhoe Bay, Russia, Somateria fischeri, Somateria mollissima, Somateria spectabilis, Species life history, Spectacled eider, Steller's eider, USGS Science Data Catalog (SDC), Wetland ecosystems, Wildlife Biology, Wildlife Disease, Yukon Delta, Yukon Delta National Wildlife Refuge, Fewer tags 1 2 »