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Location Folder Show Tree ROOT _ScienceBase Catalog 3DSC Alaska Science Center (ASC) Alkalic Igneous Centers of the Great Plains and Rocky Mountains: Data in Support of Critical Mineral Resource Studies AMMonitor: Remote wildlife monitoring for adaptive management Amphibian Research and Monitoring Initiative More... Filters Date Range Past year (25) Past month (7) Past week (6) Past day (0) Custom range... To   Search Extensions ArcGIS Service Definition (1) Shapefile (1) Types Citation (4) Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) ArcGIS REST Map Service (1) More... Contacts U.S. Geological Survey Alaska Science Center U.S. Geological Survey - ScienceBase Patil, Vijay P. (ORCID: 0000-0002-9357-194X) Ecosystems More... Categories Data Release - Revised (1) Image (1) Tag Types Theme (39) Place (38) USGS Scientific Topic Keyword (7) theme (1) Harvest Set (8) place (1) ISO 19115 Topic Category (1) More... Tag Schemes None (31) USGS Thesaurus (34) NASA GCMD Earth Science Keyword Thesaurus (24) USGS Geographic Names Information System (GNIS) (23) ISO 19115 Topic Category (37) Geographic Names Information System (14) USGS CSA Biocomplexity Thesaurus (18) More... View Results as: JSON ATOM CSV Browse Folder

Kuskokwim Bay chum salmon (Oncorhynchus keta) energy density, distribution, and stomach data, 2004 This data set documents the dry mass energy density, distribution, and stomach contents of age-0 chum salmon (Oncorhynchus keta) captured in the Kuskokwim Bay estuary in May and June 2004. The analysis of this data was published in Burrill et al. 2018 (DOI :10.1007/s00300-018-2297-2.). Categories: Data; Tags: Alaska, Bering Sea, Kuskokwim Bay, anadromous fish, biota, All tags... coastal zone, estuarine ecosystems, food web, migratory species, ontogeny, stomach contents, Fewer tags Overview of Sampled Lakes, Yukon Flats National Wildlife Refuge This dataset is a single comma-delimited text file (.csv). Data include the name of lakes where sampling occurred, approximate geographic coordinates of each lake, historical dynamics of the lake, and indication of measurements taken at the lake. Categories: Data; Tags: Alaska, Biogeochemical cycles, Biomass, Biomass dynamics, Biota, All tags... Community ecology, Environment, Landscape ecology, Primary production, Yukon Flats, Yukon Flats National Wildlife Refuge, Fewer tags Aboveground Net Primary Production Estimates from the Yukon Flats National Wildlife Refuge This dataset is a single comma-delimited text file (.csv). Data include the name of lakes where samples were obtained, the historical dynamics of that lake, the sampled community type, and the dry mass of annual new growth. Shrub community measurements are a combination of understory mass from quadrat harvests and shrub stem mass derived from published allometric equations. Categories: Data; Tags: Alaska, Biogeochemical cycles, Biomass, Biomass dynamics, Biota, All tags... Community ecology, Environment, Landscape ecology, Primary production, Terrestrial ecosystems, Wetland ecosystems, Yukon Flats, Yukon Flats National Wildlife Refuge, Fewer tags Soil Properties of Lake-Margin Wetlands of the Yukon Flats National Wildlife Refuge This dataset is a single comma-delimited text file (.csv). Data include the name of lakes where samples were obtained, soil pH, electrical conductivity (EC), water content (VWC), and bulk density (BD) of soil core samples within organic soil horizon in lake-margin wetland plant communities. Categories: Data; Tags: Alaska, Biogeochemical cycles, Biota, Environment, Lake drying, All tags... Landscape ecology, Nutrient cycling, Terrestrial ecosystems, Wetland ecosystems, Yukon Flats, Yukon Flats National Wildlife Refuge, Fewer tags Population Plots at Two Seabird Colonies in Lower Cook Inlet, Alaska This dataset consists of one table with annual counts from population plots of Black-legged Kittiwakes and Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Black-legged Kittiwakes, All tags... Breeding sites, Coastal ecosystems, Common Murres, Cook Inlet, Environment, Gulf of Alaska, Indicator species, Kachemak Bay, Marine ecosystems, Population dynamics, Rissa tridactyla, Uria aalge, Waders/Gulls/Auks and Allies, Wildlife, Fewer tags Gulf Watch Alaska Nearshore Component: Sea Otter Aerial Survey Data Katmai National Park and Preserve, 2008-2018 These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe sea otter (Enhydra lutris) aerial survey observations from the waters around Katmai National Park and Preserve from surveys conducted in 2008, 2012, 2015, and 2018. Sea otters are a keystone predator, well known for structuring the nearshore marine ecosystem through their consumption of invertebrate prey. The dataset consists of 3 comma-delimited files (CSV) exported from Microsoft Excel. The data consists of (1) Strip transect counts, (2) Intensive Search Unit (ISU) counts, and (3) Transect coordinates. For each aerial survey, a pilot flew an airplane at an altitude... Categories: Data, Data Release - Revised; Tags: Abundance, Aerial survey, Alaska, Animals/Vertebrates, Aquatic Biology, All tags... Aquatic ecosystems, Benthic habitat, Biota, Coastal habitat, Distribution, Ecology, Ecology, Ecosystem monitoring, Enhydra lutris, Environment, Gulf of Alaska, Intertidal environments, Katmai National Park and Preserve, Marine environment monitoring, Marine mammals, Otters, Population dynamics, Sea otters, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags Fish Species Composition and Diet Information in Lakes of the Arctic Coastal Plain, Alaska, 2011-2013 This dataset provides information on fish species composition and their diet information for 16 lakes and 16 ponds at two locations on the central Arctic Coastal Plain, Alaska. In one table, we provide the presence of fish species and the total species count for each lake or pond sampled. This table also includes metrics of surface water connectivity to the stream network. In a second table, stomach content information is provided for fish collected during summer sampling periods (late June to mid-August) over three years (2011–2013). The third table includes stable carbon isotope and stable nitrogen isotope signature data for fish species and snails (the baseline organism) from 16 water bodies at one study location... Categories: Data; Tags: Alaska, Arctic, Arctic Coastal Plain, Diet, Isotopes, All tags... North Slope Borough, Species composition, Species richness, Stomach contents, biota, inlandWaters, isotopic analysis, prey, Fewer tags Eelgrass (Zostera marina) Microsatellite DNA Data; Pacific Coast of North America, 2000-2009 This data set contains genetic information collected from eelgrass (Zostera marina) populations along the Pacific coast of North America from Alaska to Baha California. A total of 447 samples were collected comprising 401 unique individuals (genets) and 46 clones (ramets) from which 10 microsatellite DNA loci were obtained. Categories: Data; Types: Citation; Tags: Angiosperms (Flowering Plants), AquaticEcosystems, Bahia Magdelena, Bahia San Quintin, Biological Classification, All tags... Biosphere, Coastal Habitat, Ecological Dynamics, Estero Punta Banda, Evolutionary Adaptation, Gene Flow, Genetic Diversity, Genetic Structure, Izembek Lagoon, Kinzarof Lagoon, Kuskokwim Shoals, Monocots, Montague Island, Monterey Bay, Nakwasina Bay, Plants, Safety Sound, Saint Catherine Cove, Seagrass, Shallow Bay, Simeonof Island, Species/Population Interactions, Togiak Bay, Unga Island, Wide Bay, Yaquina Bay, biota, Fewer tags Common Murre Disturbance Data on Gull Island, Kachemak Bay, Alaska This dataset consists of one table with predator disturbance information from the Common Murre breeding season (June-August) from 2016-2020 on Gull Island, Kachemak Bay, Alaska. Categories: Data; Tags: Alaska, Animal behavior, Animals/Vertebrates, Bald Eagle, Biota, All tags... Birds, Breeding sites, Breeding success, Coastal ecosystems, Common Murre, Community dynamics, Community ecology, Cook Inlet, Eagles/Falcons/Hawks and Allies, Ecosystem functions, Egg production, Environment, Field inventory and monitoring, Glaucous-winged Gull, Gulf of Alaska, Gull Island, Haliaeetus leucocephalus, Herring Gull, Kachemak Bay, Larus argentatus, Larus glaucescens, Marine ecosystems, Nesting behavior, Reproduction, USGS:ASC586, Uria aalge, Waders/Gulls/Auks and Allies, Fewer tags Carbon and Nitrogen Content of Organic Soils in Lake-Margin Wetlands of the Yukon Flats National Wildlife Refuge This dataset is a single comma-delimited text file (.csv). Data include the name of lakes where samples were obtained, soil core dimensions, bulk density, and carbon/nitrogen content of soil core samples within the organic soil horizon in lake-margin wetland plant communities. Categories: Data; Tags: Alaska, Biogeochemical cycles, Biota, Carbon, Environment, All tags... Lake drying, Landscape ecology, Nitrogen, Nutrient cycling, Soil carbon storage, Terrestrial ecosystems, Wetland ecosystems, Yukon Flats, Yukon Flats National Wildlife Refuge, Fewer tags Enteroctopus Sampling Effects on Genetic Data, Prince William Sound, Alaska, 2012-2015 These are genetic data collected from replicated samples of 21 Enteroctopus (E. dofleini or a cryptic lineage) in Prince William Sound Alaska to evaluate tissue type, DNA extraction method, and time until analyses are completed on data reliability. Data collected from all samples include two microsatellites identified as possible lineage indicators, and nine microsatellite loci previously identified as polymorphic in both lineages. DNA sequence data from 528 bp of the octopine dehydrogenase (OCDE) gene were also collected. Categories: Data; Tags: Amino Acid Oxidoreductases, Animals/Invertebrates, Bald Head Chris Island, Biodiversity, Biodiversity, All tags... Biota, Cephalopods, Chenega, DNA, DNA sequencing, Electrophoresis, Environment, Genetic Markers, Genetic diversity, Genetics, Golden Bay, Port Wells, Herring Bay, Long Bay, Marine ecosystems, Microsatellite Repeats, Mollusks, Polymerase chain reaction, Population genetics, Port Wells, Prince William Sound, Prince of Wales Passage, Species diversity, Systematics and taxonomy, USGS:ASC145, Western Prince William Sound, Fewer tags Arthropod Abundance Data from the Colville River Delta, Alaska This data release contains information on the seasonal diversity and abundance of arthropods collected at the Colville River Delta, Alaska, 2011-2012 and 2014-2107. Researchers with the US Geological Survey began studying the reproductive ecology of birds at a site on the Colville River near the Beaufort Sea coast in 2011. Researchers concurrently collected arthropods at 3-day intervals to understand the relationship between the seasonal abundance of arthropods and the reproductive output of insectivorous birds. Categories: Data; Tags: Alaska, Animals/Invertebrates, Arachnida, Arctic Coastal Plain, Arthropods, All tags... Bioenergetics, Biota, Collembola, Colville River Delta, Ecology, Environment, Insecta, Insects, Insects, Invertebrates, Terrestrial ecosystems, Tundra ecosystems, USGS Science Data Catalog (SDC), Wetland ecosystems, Wildlife Biology, Wildlife food habits, Fewer tags Pacific Walrus Coastal Haulout Database 1852-2016 We summarize available information on Pacific walrus haulouts from available reports, interviews with coastal residents and aviators, and personal observations of the authors. We provide this in the form of a georeferenced database that may be queried and displayed with standard geographic information system and database management software. The database contains 150 records of Pacific walrus haulouts, with a summary of basic characteristics on maximum haulout size, age-sex composition, season of use, and decade of most recent use. Citations to reports are provided as a bibliographic database. Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alaska, Arctic, Arctic Ocean, Beaufort Sea, Bering Sea, All tags... Chukchi Sea, Chukotka, East Siberian Sea, Kamchatka, Pacific Ocean, Russian Far East, biota, coast, haulout, marine, marine mammals, Fewer tags Denning Phenology, Den Substrate, and Reproductive Success of Female Polar Bears (Ursus maritimus) in the Southern Beaufort Sea 1986-2013 and the Chukchi Sea 1987-1994 (ver 1.1, July 2021) These data represent estimates of den entrance and exit dates for female polar bears in the southern Beaufort and Chukchi Seas based on temperature sensor data obtained from satellite collars. An algorithm described in Olson et al. (2017) was used to determine whether the female entered a den and further analyses using temperature data as described in Olson et al. (2017) were used to assess den entry and emergence dates. The algorithm used identified the denning period as that during which collar temperature remained consistently above a temperature threshold. As such, users of these data should be aware that bear behavior can affect den entrance and exit date. If a bear moves in and out of a den frequently, the... Categories: Data; Tags: Alaska, Beaufort Sea, Chukchi Sea, animals, behavior, All tags... biota, dens, mammals, vertebrates, Fewer tags Fodar Orthomosaic of the Totatlanika River Corridor (Alaska) Acquired August 2021 This dataset provides an orthorectified aerial photo mosaic derived from airborne fodar data acquired in 2021 on August 31 over the Totatlanika River in central Alaska. The term “fodar” is a portmanteau of foto and lidar, coined by Matt Nolan, which describes a method of quantifying the color and elevation of Earth’s surface via airborne small-format digital camera photography. Categories: Data, Image; Tags: Alaska, Alaska Range, Buzzard Creek, California Creek, DIGITAL ELEVATION/TERRAIN MODEL (DEM), All tags... Data, FAULTS, Geomorphology, Geospatial Datasets, Image, Land surface characteristics, MOUNTAINS, OROGENIC MOVEMENT, TECTONIC UPLIFT, Tectonic processes, Topography, Totatlanika River, USGS:ASC416, completed, elevation, geoscientificInformation, Fewer tags Nesting Productivity of Black-Legged Kittiwakes and Common Murres at Two Seabird Colonies in Lower Cook Inlet, Alaska This dataset consists of one table with annual nesting productivity estimates for Black-legged Kittiwakes and Common Murres at two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Black-legged Kittiwakes, All tags... Breeding sites, Coastal ecosystems, Common Murres, Cook Inlet, Environment, Gulf of Alaska, Indicator species, Kachemak Bay, Marine ecosystems, Population dynamics, Rissa tridactyla, USGS:ASC378, Uria aalge, Waders/Gulls/Auks and Allies, Wildlife, Fewer tags Gulf Watch Alaska, Nearshore Monitoring Component: Sea Otter Foraging Observations from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park, 2012-2016 This data is part of the Gulf Watch Alaska (GWA) long term monitoring program, benthic monitoring component and a seasonal diet study in Kenai Fjords National Park. The dataset is a comma separated file exported from a Microsoft Access database. The data 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 are all recorded. Sites are in Alaska and include locations in Katmai National Park and Preserve, Kenai Fjords National Park and Prince William Sound. This data in this file were collected 2012-2016. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Biology, Ecology, Enhydra lutris, Gulf of Alaska, Katmai National Park and Preserve, All tags... Kenai Fjords National Park, Prince William Sound, USGS Science Data Catalog (SDC), Wildlife Biology, biota, coastal ecosystems, environment, foraging behavior, marine ecology, monitoring, prey, sea otters, synecology, Fewer tags Serum Urea and Creatinine Levels of Spring-caught Polar Bears (Ursus maritimus) in the Southern Beaufort Sea, 1983-2016, and Chukchi Sea, 1987-1993 These data are serum urea nitrogen and creatinine levels for polar bears captured in the southern Beaufort Sea 1983-2016 and the Chukchi Sea 1987-1993. The dataset includes relevant information about the bears that were captured including the latitude and longitude of their capture location, capture date, age class and sex, the age and number of cubs accompanying an adult female, and whether the bear denned during the previous winter or exhibited signs of being engaged in mating behavior at the time of or just prior to capture. Categories: Data; Types: Citation; Tags: Beaufort Sea, Chukchi Sea, animals/vertebrates, behavior, biota, All tags... food consumption, Fewer tags Brown Bear Spring Energetics, Alaska, 2014-2017 These data are the data for spring body composition and energy content for adult female brown bears from Gates of the Arctic, Lake Clark, Kodiak, and Katmai, Alaska, 2014-2017. Categories: Data; Tags: Alaska, Biota, Gates of the Arctic National Park Alaska, Katmai National Park Alaska, Kodiak National Wildlife Refuge Alaska, All tags... Lake Clark National Park, animals, animals, animals, bears, bears, body composition, carnivores, energetics, life history, mammals, mammals, mammals, vertebrates, vertebrates, Fewer tags Hydroacoustic Survey Data from Lower Cook Inlet, Alaska This dataset consists of one table with Area Backscattering Coefficient (ABC) data from hydroacoustic transect surveys collected around two seabird nesting colonies on Gull and Chisik Islands in lower Cook Inlet, Alaska. Categories: Data; Tags: Acoustic backscatter, Alaska, Aquatic Sciences and Fisheries, Biota, Coastal ecosystems, All tags... Cook Inlet, Environment, Fisheries, Fishery technology, Gulf of Alaska, Hydroacoustics, Kachemak Bay, Marine ecosystems, Marine fisheries, Marine fishery resources, Nautical area scattering coefficient, Oceans, Pelagic habitat, Zooplankton, Fewer tags 1 2 »