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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 (9) Past month (9) Past week (7) Past day (0) Custom range... To   Search Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts U.S. Geological Survey, Alaska Science Center USGS ScienceBase Team Alaska Science Center Ecosystems Esslinger, George G. (ORCID: 0000-0002-3459-0083) More... Categories Data (13) Data Release - Revised (1) Tag Types Theme (13) Place (13) USGS Scientific Topic Keyword (9) Harvest Set (9) Tag Schemes USGS Thesaurus (12) None (11) USGS Geographic Names Information System (GNIS) (8) NASA GCMD Earth Science Keyword Thesaurus (7) USGS CSA Biocomplexity Thesaurus (7) ISO 19115 Topic Category (12) USGS Biocomplexity Thesaurus (3) 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 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 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 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 DNA Microsatellite and Sex Identification Marker Screening for Mexican Spotted Owl (Strix occidentalis lucida) Two tables of data are included in this data release. The first table provides screening results for 32 previously described and/or published microsatellites and 1 sexing marker, primer redesigns for use in Mexican Spotted Owls in this data release, and size of markers in Mexican Spotted Owls. The second table provides microsatellite and sexing marker results for 10 tissue and 98 feather samples for 11 microsatellite markers identified as variable in initial marker screenings. Categories: Data; Tags: Alleles, Animals/Vertebrates, Apache-Sitgreaves National Forest, Arizona, Biota, All tags... Birds, Birds of prey, Breeding sites, Capture-recapture studies, Coconino National Forest, DNA, DNA Primers, Environment, Genetic diversity, Genetic markers, Genetics, Genetics, Genotype, Grand Canyon National Park, Kaibab National Forest, Los Alamos, Mexican Spotted Owl, Microsatellite Repeats, New Mexico, Polymerase chain reaction, Raptors, Sexing (plants & animals), Strix occidentalis lucida, Terrestrial ecosystems, Threatened species, Tonto National Forest, USGS Science Data Catalog (SDC), Walnut Canyon National Monument, Wildlife, Wildlife Biology, Fewer tags DNA Microsatellite Markers for Northern Fulmar (Fulmaris glacialis) and Cross-species Amplification in Select Seabird Species This data set is comprised of one table with sampling information and allele sizes for 69 individual Northern Fulmars (Fulmarus glacialis) from Chagulak Island, Alaska and Hafnarey Island, Iceland. Fulmar allele sizes are provided for 10 previously published and 26 novel microsatellite loci. Additionally, allele sizes for the 26 microsatellite loci developed in this study are included for Arctic Terns (Sterna paradisaea, n=4), Common Murres (Uria aalge, n=6), Crested Auklets (Aethia cristatella, n=6), Fork-tailed Storm Petrels (Oceanodroma furcata, n=5), Marbled Murrelets (Brachyramphus marmoratus, n=5), Common Gulls (Larus canus, n=5), Pelagic cormorants (Phalacrocorax pelagicus, n=5), and Thick-billed Murres (Uria... Categories: Data; Tags: Alaska, Albatrosses/Petrels and Allies, Alleles, Animals, Animals/Vertebrates, All tags... Arctic Regions, Biota, Birds, Birds, Birds, Charadriiformes, DNA sequencing, Environment, Fulmarus glacialis, Genetic diversity, Genetic variance, Genetics, Genetics, Genetics, Population, Iceland, Life Sciences, Microsatellite Repeats, Northern fulmar, Polymerase chain reaction, Population genetics, Systematics and taxonomy, USGS Science Data Catalog (SDC), Waders/Gulls/Auks and Allies, Wildlife Biology, Fewer tags Gulf Watch Alaska, Benthic Monitoring Component: Sea Otter Aerial Survey Data Kenai Fjords National Park, 2002-2016 These data are is 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 Kenai Fjords National Park between 2002 and 2016. 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 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 of 91m over pre-determined transects while an... Categories: Data; 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, Kenai Fjords National Park, Marine environment monitoring, Marine mammals, Otters, Population dynamics, Sea otters, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags Brown Bear Phenotypic Plasticity, Alaska, 2013-2016 These data are the data for age, skull size, body length, and lean mass for Gates of the Arctic, Lake Clark, Kodiak, and Katmai, Alaska, 2013-2016. Categories: Data; Tags: Age, Age composition, Age structure, Alaska, Biota, All tags... Gates of the Arctic National Park Alaska, Growth, Katmai National Park Alaska, Kodiak National Wildlife Refuge Alaska, Lake Clark National Park, Phenology, Population and community ecology, Population structure, animals, animals, bears, carnivores, mammals, mammals, vertebrates, Fewer tags Sea Otter Gene Transcription Data from Kodiak, the Alaska Peninsula, and Prince William Sound, Alaska, 2005-2012 This data set includes capture location, date, sex, and results of molecular gene transcription analysis for sea otters (Enhydra lutris) sampled in western Prince William Sound (WPWS), Alaska and comparison samples collected from Kodiak and the Alaska Peninsula, and reference samples collected from captive animals. Samples were collected between 2005 and 2012. Molecular gene transcription is the process by which information from the DNA template of a particular gene is transcribed into messenger RNA (mRNA) and eventually translated into a functional protein. The amount of mRNA transcribed from a particular gene is physiologically dictated. Altered levels of gene transcripts provide observable signs of health impairment. Categories: Data; Tags: Adak Island, Alaska, Alaska Peninsula, Animals/Vertebrates, Aquatic Biology, All tags... Biomarker, Biota, EVOS, Ecology, Ecosystem monitoring, Ecotoxicology, Environment, Environmental Health, Exxon Valdez Oil Spill, Gene transcription, Katmai National Park and Preserve, Knight Island, Kodiak Island, Mammals, Marine ecosystems, Montague Island, Oil exposure, Otters, Population recovery, Prince William Sound, USGS Science Data Catalog (SDC), Water Quality, Wildlife, Wildlife Biology, Fewer tags Harlequin Duck Capture and EROD Activity Data from Prince William Sound, Alaska, 2011, 2013, 2014 This data set includes capture information and ethoxyresorufin­O­deethylase (EROD) activity results for harlequin ducks sampled during March 2011, 2013, and 2014 in western Prince William Sound, Alaska. Categories: Data; Tags: Alaska, Animals/Vertebrates, Aquatic Biology, Aquatic ecosystems, Benthic habitat, All tags... Biomarkers, Biota, Birds, Capture, Coastal habitat, Cytochrome p4501A, Ecology, Ecology, Ecology, Ecosystem monitoring, Environment, Environmental Health, Exxon Valdez Oil Spill, Harlequin duck, Histrionicus histrionicus, Intertidal environments, Marine environment monitoring, Oil exposure, Population recovery, Prince William Sound, USGS Science Data Catalog (SDC), Water Quality, Wildlife Biology, Fewer tags Appendices for Transgressive-Regressive Cycles in the Metalliferous, Oil Shale-bearing Heath Formation (Upper Mississippian), Central Montana This set of data files are the appendices for paper titled Transgressive-regressive cycles in the metalliferous, oil shale-bearing Heath Formation (Upper Mississippian), central Montana. The dataset consists of 8 appendices, including a histogram of solid bitumen and vitrinite Ro values, gas chromatograms, isotopic data, organic and inorganic geochemical analyses, and x-ray diffraction mineralogy data. Categories: Data; Tags: Big Snowy Trough, Heath Formation, Mississippian, Montana, Paleozoic, All tags... Williston Basin, earth sciences, economic geology, geology, geoscientificInformation, metal enrichment, mudrocks, transgressive-regressive cycles, Fewer tags Carbon Isotopes, Total Organic Carbon, Programmed Pyrolysis, Volcanic Zircon U-Pb, and Geochemistry Data from the Hue Shale, Arctic Alaska - 2024 This dataset contains results from a stratigraphic section of the Hue Shale located along the Jago River in the Arctic National Wildlife Refuge at 69.9099, -143.3947 (WGS84). Sample heights were measured with a tape measure in a continuous succession. Zircon grains from volcanic ashes were analyzed via laser ablation at either the University of California, Santa Barbara (UCSB) or the University of Arizona Laserchron Center (ALC) using a Photon Machines Analyte 193-nm Excimer laser and Nu Instruments Plasma HR MC-ICPMS. Zircon grains from volcanic ashes were analyzed via chemical abrasion at the Berkeley Geochronology Center using a Sector 54 TIMS. Bulk mudstone samples were subject to a variety of analyses. Total... Categories: Data; Tags: Alaska, Atomic emission spectroscopy, Brooks Range, Carbon isotope analysis, Energy Resources, All tags... GeoScientificInformation, Geochemistry, Geochemistry, Geochronology, Geology, Isotopic analysis, Mass spectroscopy, North Slope, Ocean/lake records, Paleoclimate, Radiometric dating, Stratigraphic sequence, U-Pb, USGS Science Data Catalog (SDC), Uranium-lead analysis, Volcanic zircon, Fewer tags