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Location Folder Show Tree ROOT _ScienceBase Catalog __Alaska Science Center (ASC) _Ecosystems _Geology & Natural Hazards _Water Ice & Landscapes aerialImagery aquaticEcology More... Filters Date Range Past year (10) Past month (2) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (2) ArcGIS Service Definition (1) Types Downloadable (3) Map Service (3) OGC WFS Layer (2) OGC WMS Layer (2) Shapefile (2) ArcGIS REST Map Service (1) ArcGIS Service Definition (1) Contacts Ecosystems Keith A Labay Daniel N Esler David Green Energy and Minerals More... Categories Data (11) Tag Types Theme (11) Place (11) USGS Scientific Topic Keyword (11) Harvest Set (10) Subject (1) Tag Schemes USGS Thesaurus (10) NASA GCMD Earth Science Keyword Thesaurus (9) USGS Geographic Names Information System (GNIS) (10) None (9) Protected Areas Database of the United States (PAD-US) (3) USGS CSA Biocomplexity Thesaurus (6) ISO 19115 Topic Category (10) More... View Results as: JSON ATOM CSV Browse Folder

Selected Whole-Rock and Sediment Geochemistry Reanalysis Data Additions to the Alaska Geochemical DataBase (AGDB) from Archived Samples, Alaska This data release contains elemental concentration data from the reanalysis of 13,930 archived stream-sediment sample and associated stream sediment reference material and 968 archived rock samples and associated rock reference material. All archived material was from samples that were collected in Alaska. Samples were retrieved from the USGS Mineral Program's sample archive in Denver, CO. Sample processing consisted of splitting the appropriate aliquot for the requested analyses. Sample splitting was performed in the USGS Mineral Program's sample prep facilities. 13,800 samples were analyzed using a multi-element analytical method involving decomposition of the sample by sodium peroxide and elemental analysis by... Categories: Data; Tags: Alaska, Alaska Range, Aleutian Islands, Aleutian Range, Alexander Archipelago, All tags... Bering Sea, Brooks Range, Chugach Mountains, Geochemistry, Gulf of Alaska, Kuskokwim Mountains, Mineral Resources, Seward Peninsula, USGS Science Data Catalog (SDC), United States, Wrangell Mountains, aluminum, antimony, arsenic, barium, beryllium, boron, cadmium, calcium, cerium, cesium, chemical analysis, chromium, cobalt, copper, dysprosium, earth science, earth sciences, erbium, europium, ferric iron, ferrous iron, gadolinium, gallium, geochemistry, geochemistry, geoscientificInformation, germanium, gold, hafnium, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, mercury, mineral resources, mineralogy, molybdenum, neodymium, nickel, niobium, palladium, potassium, praseodymium, rhenium, rubidium, samarium, scandium, selenium, silicon, silver, sodium, strontium, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags Data Associated with a Multi-Stage Captive Trial Assessing the Effects of Saxitoxin Ingestion by Common Murres (Uria aalge) This data set is comprised of results associated with a multi-stage experimental study to determine the effects of paralytic shellfish toxin ingestion by Common Murres (Uria aalge) conducted in 2021-2022. Data is comprised of eight spreadsheets covering each phase of the study including specific bird dosing data, behavioral observation data, foraging trial data, and tissue testing results for Saxitoxin (STX) and related congeners. Categories: Data; Tags: Acute toxicity, Alaska, Animals/Vertebrates, Aquatic Biology, Behavior, All tags... Bioaccumulation, Biological Science Disciplines, Biota, Biotoxin, Birds, Disease, Dose-response effects, Ecology, Ecotoxicology, Effective Dose, Environment, Environmental Health, Harmful algal bloom, Health, Laboratory experiments, Marine ecosystems, Natural Science Disciplines, Neurotoxin, Paralytic shellfish toxin, Pathologic Processes, Real-time monitoring and reporting, Saxitoxin, Seward, Tracer study, USGS Science Data Catalog (SDC), Waders/Gulls/Auks and allies, Wildlife Biology, Wildlife Disease, Fewer tags Harlequin Duck Genetic Data, North America, Greenland, and Iceland, 1945-2006 This data package is comprised of three tables with data from wintering Harlequin Ducks (Histrionicus histrionicus) from Alaska, British Columbia, Washington, Maine, Greenland, and Iceland. The first table contains available allele sizes for 7 microsatellite loci (Sfiµ1, Sfiµ4, Sfiµ9, Sfiµ10, Bcaµ10, Hhiµ2, Hhiµ5) and mtDNA control region haplotypes. The second table contains the mtDNA control region sequences used to assign haplotypes. The third table provides the geographic locations of sampling sites. Categories: Data; Tags: Alaska, Alleles, Animals/Vertebrates, Biota, Birds, All tags... British Columbia, Canada, Coastal ecosystems, DNA Primers, DNA sequencing, DNA, Mitochondrial, Ducks/Geese/Swans, Environment, Gene Flow, Genetic diversity, Genetic markers, Genetics, Genetics, Genotype, Greenland, Harlequin Duck, Histrionicus histrionicus, Iceland, Magadan, Maine, Marine ecosystems, Microsatellite Repeats, Migratory birds, Overwintering, Polymerase chain reaction, Population Genetics, Russia, USGS Science Data Catalog (SDC), Washington, Waterfowl, Wetland ecosystems, Wildlife, Wildlife Biology, Fewer tags Data for Infectivity of Wild-Bird Origin Influenza A Viruses in Minnesota Wetlands Across Seasons This data set represents an ecological and laboratory-based experiment to understand influenza virus viability in surface water. Data tables included in this release consist of 1) daily mean water temperature, 2) viability of viruses maintained in water, 3) influenza detection in duck samples, 4) viral titers of experimentally inoculated water samples, and 5) water chemistry. Categories: Data; Tags: Agassiz National Wildlife Refuge, Animal disease, Animal diseases/disorders/pests, Animals/vertebrates, Aquatic Biology, All tags... Avian influenza, Biota, Birds, Disease reservoirs, Disease/epidemic, Ducks/geese/swans, Environment, Environmental Health, Freshwater ecosystems, Genetics, Health, Health and disease, Influenza A virus, Lakes/reservoirs, Migratory birds, Minnesota, Persistence, Roseau River Wildlife Management Area, USGS Science Data Catalog (SDC), Virus Diseases, Viruses, Waterfowl, Wildlife, Wildlife Biology, Wildlife Disease, Wildlife disease, Fewer tags Data and results for GIS-based identification of areas that have resource potential for lode gold deposits in Alaska This data release contains the analytical results and evaluated source data files of geospatial analyses for identifying areas in Alaska that may be prospective for different types of lode gold deposits, including orogenic, reduced-intrusion-related, epithermal, and gold-bearing porphyry. The spatial analysis is based on queries of statewide source datasets of aeromagnetic surveys, Alaska Geochemical Database (AGDB3), Alaska Resource Data File (ARDF), and Alaska Geologic Map (SIM3340) within areas defined by 12-digit HUCs (subwatersheds) from the National Watershed Boundary dataset. The packages of files available for download are: 1. LodeGold_Results_gdb.zip - The analytical results in geodatabase polygon feature... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alaska, Alaska lode gold geology, Alaska lode gold geology geochemistry, Economic Geology, Epithermal, All tags... Geochemistry, Geochemistry, Geographic Information System (GIS), Geology, Gold, Lode gold, Mineral resources, Orogenic, Porphyry, Prospectivity mapping, Reduced intrusion-related gold, United States, Fewer tags Black Oystercatcher Morphology and Primary Feather Lengths in Alaska and British Columbia, 2019-2022 These data provide morphological measurements and primary feather length measurements of Black Oystercatcher (Haematopus bachmani) captured at several sites across Alaska and British Columbia between 2019 and 2022. The first table contains mass and morphological measurements of body and bill size. The second table provides lengths of individual primary feathers measured from folded wing photographs using a computer software. These feather lengths are to be used in a size-constrained components analysis to calculate wing shape such as pointedness and convexity. Categories: Data; Tags: Age structure, Alaska, Animal morphology, Animals/Vertebrates, Avian physiology, All tags... Biota, Birds, Body size, Body weight, British Columbia, Canada, Capturing (animals), Coastal ecosystems, Ecology, Ecology, Environment, Gulf Islands, Haida Gwaii, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Marine biology, Marine ecosystems, Migratory birds, Nearshore marine ecosystem, Pacific Rim National Park, Prince William Sound, Salish Sea, Sandpipers, Scientific interpretation, Sexual dimorphism, USGS Science Data Catalog (SDC), Wildlife Biology, Wing shape, Fewer tags Nesting Period Data for Black Brant (Branta bernicla nigricans) in Alaska This data package contains one table with nest initiation and end dates and clutch sizes from Black Brant (Branta bernicla nigricans) at two breeding colonies in Alaska. Data include nesting period determined by either nest visits or light-level data recorded by geolocators attached tarsal bands. Categories: Data; Tags: Alaska, Animals/Vertebrates, Annual cycle, Biota, Birds, All tags... Black brant, Branta bernicla nigricans, Coastal ecosystems, Ducks/Geese/Swans, Environment, Light-level geolocator, Migratory birds, Migratory rates/routes, Migratory species, NPR-A, National Petroleum Reserve-Alaska, Seasonal distribution, Species life history, Tagging devices, Telemetry, Tracking equipment, Tundra ecosystems, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Yukon Delta, Yukon Delta National Wildlife Refuge, Yukon-Kuskokwim River Delta, Fewer tags 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 developed for four portions of Elodea mtDNA genes (ITS1-5.8S, atpB-rbcL, and two variations of trnL-trnF). The reference sequences and conserved primer sets to identify species present were developed using publicly available data from NCBI GenBank (https://www.ncbi.nlm.nih.gov/genbank/). Categories: Data; Tags: 5.8S, Alaska, Aquatic Biology, Aquatic ecosystems, Aquatic ecosystems, All tags... Aquatic invasive species, Biota, Coastal ecosystems, DNA Primers, DNA sequencing, Ecology, Elodea, Environment, Environmental DNA, Environmental Health, Genetic markers, Genetics, Marine environment monitoring, Metabarcoding, Mitochondrial DNA, Polymerase chain reaction, Tundra ecosystems, USGS Science Data Catalog (SDC), Weeds, noxious plants, or invasive plants, Wetland ecosystems, Wildlife, atpB-rbcL, eDNA, trnL-trnF, Fewer tags Alaska Landbird Monitoring Survey Dataset Boreal Partners in Flight developed the Alaska Landbird Monitoring Survey (ALMS) primarily to monitor breeding populations of landbirds in the vast off-road areas of Alaska in conjunction with data collected from the roadside North American Breeding Bird Survey (BBS). ALMS is a collaborative program in which agencies and other entities conduct standardized surveys of breeding birds and their habitats on the lands they manage and then provide the data to the U.S. Geological Survey Alaska Science Center for analysis and archiving. The ALMS monitoring program comprises a set of survey blocks that have been selected in a stratified-random design primarily across state and Federal natural resource lands in Alaska with... Categories: Data; Tags: Admiralty Island, Alaska, Alaska Maritime National Wildlife Refuge, Alaska Peninsula, Alaska Peninsula National Wildlife Refuge, All tags... Andreafsky Wilderness, Animal and plant census, Animals/vertebrates, Arctic National Wildlife Refuge, Biodiversity, Biogeography, Biota, Bird behavior, Birds, Chugach National Forest, Chugach State Park, Copper River Census Area, Copper River Delta Fish and Wildlife Management Area, Cranes and allies, Denali National Park and Preserve, Denali State Park, Detection distance, Ducks/geese/swans, Eagle/falcons/hawks and allies, East Fork Skagway River, Ecology, Ecology, Environment, Environmental conditions, Fairbanks North Star Borough, Field inventory and monitoring, Fort Greely, Grebes, Habitats, Herons/egrets and allies, Innoko National Wildlife Refuge, James Dalton Mountain, Joint Base Elmendorf-Richardson, Kanuti National Wildlife Refuge, Kenai Wilderness, Klondike Gold Rush National Historic Park, Kodiak National Wildlife Refuge, Koyukuk National Wildlife Refuge, Koyukuk River, Loons, Migratory birds, Mitkof Island, Mount Fairplay, National Petroleum Reserve in Alaska, Natlaratlen River, North Slope Borough, Nowitna National Wildlife Refuge, Ornithology, Perching Birds, Resident birds, Sandpipers, Selawik National Wildlife Refuge, South Baranof Wilderness, Spatial distribution, Taku Glacier, Terrestrial ecosystems, Tetlin National Wildlife Refuge, Tongass National Forest, Tracy Arm-Fords Terror Wilderness, USGS Science Data Catalog (SDC), Waders/gulls/auks and allies, Wildlife, Wildlife Biology, Fewer tags Selected Basin Boundaries for USGS Streamgages in Alaska through 2014 This dataset contains 474 drainage basin boundaries for U.S. Geological Survey (USGS) streamgages in Alaska, including supplemental drainage basin boundaries for alternate conditions for 3 of the 471 streamgages. The basin boundaries were delineated from the streamgage location to the nearest USGS Watershed Boundary Dataset (WBD) HUC boundary and along HUC boundaries from that intersection to the basin headwaters. The dataset also includes the streamgage locations used for delineation, which consist of points snapped from the streamgage coordinates in the USGS National Water Information System to the USGS National Hydrography Dataset flowline representing the respective streams. Streamgages selected for drainage... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Discharge/flow, Hydrographic datasets, Hydrology, Hydrology, All tags... InlandWaters, Rivers/streams, Terrestrial Hydrosphere, USGS Science Data Catalog (SDC), Water Resources, Fewer tags 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 resources; the Monitoring Trends in Burn Severity (MTBS) database (https://www.mtbs.gov/viewer/index.html), geospatial rasters of historic fire activity derived from Landsat 1-9 imagery in the Google Earth Engine(https://earthengine.google.com) environment, and historical air photos acquired through EarthExplorer (https://earthexplorer.usgs.gov/).... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Alaska Peninsula National Wildlife Refuge, Arctic National Wildlife Refuge, Becharof National Wildlife Refuge, Disturbance, All tags... Environment, Fires, Forestry, Habitat alteration and disturbance, Innoko National Wildlife Refuge, Izembeck National Wildlife Refuge, Kanuti National Wildlife Refuge, Kenai National Wildlife Refuge, Kodiak National Wildlife Refuge, Koyukuk National Wildlife Refuge, Land Use / Land Cover, Land Use Change, Landsat, Landscape, Landscape Processes, Nowitna National Wildlife Refuge, Remote Sensing, Remote sensing, Selawik National Wildlife Refuge, Tetlin National Wildlife Refuge, Togiak National Wildlife Refuge, USGS Science Data Catalog (SDC), Wildland fire, Yukon Delta National Wildlife Refuge, Yukon Flats National Wildlife Refuge, Fewer tags