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Location Folder Show Tree ROOT _ScienceBase Catalog __Alaska Science Center (ASC) ____Ecosystems Aerial Photo Imagery from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019 Bird Species Checklists from USGS Alaska Science Center Field Camps Data from Black Brant (Branta bernicla nigricans) Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico Data from Prince William Sound: Distribution, Abundance, and Morphology of Fish, Zooplankton, and Predators and Oceanographic Conditions Pacific Walrus Coastal Haulout Occurrences Interpreted from Satellite Imagery More... Filters Date Range Past year (13) Past month (13) Past week (5) Past day (3) Custom range... To   Search Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Alaska Science Center U.S. Geological Survey USGS ScienceBase Team Ecosystems Esslinger, George G. (ORCID: 0000-0002-3459-0083) More... Categories Data (12) Data Release - Revised (2) Tag Types Theme (13) Place (13) USGS Scientific Topic Keyword (12) Harvest Set (12) Tag Schemes USGS Thesaurus (12) None (12) USGS Geographic Names Information System (GNIS) (11) NASA GCMD Earth Science Keyword Thesaurus (10) USGS CSA Biocomplexity Thesaurus (12) ISO 19115 Topic Category (12) NIH MeSH Thesaurus (2) More... View Results as: JSON ATOM CSV Browse Folder

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 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 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 Aerial Photo Imagery from Fall Waterfowl Surveys, Izembek Lagoon, Alaska, 2017-2019 The imagery and annotations presented here were generated while testing an aerial photographic survey design to improve repeatability, transparency, and estimation of variance for annual population estimates of geese staging at Izembek Lagoon, Alaska. This dataset includes 1) 131,031 .JPG images captured from a small fixed-wing occupied aircraft, usually at an altitude of about 457 m, over Izembek Lagoon; 2) annotations of objects (geese, ducks, and gulls) assigned by an automated algorithm, and 3) manually corrected annotations that were edited by project staff for only those photos automatically identified as containing geese of any species. The photos were captured at predetermined points to systematically sample... Tags: Aerial photography, Aerial surveys, Alaska, Alaska Peninsula, Animals/Vertebrates, All tags... Anser canagicus, Aquatic ecosystems, Biota, Birds, Branta bernicla, Branta hutchinsii, Coastal ecosystems, Ducks/Geese/Swans, Environment, Estuarine habitat, Image collections, Izembek Lagoon, Izembek National Wildlife Refuge, Migratory birds, Migratory species, Photography, Population dynamics, Relative abundance analysis, Tundra ecosystems, USGS:ASC449, Waders/Gulls/Auks and Allies, Waterfowl, Wetland ecosystems, Wildlife, Fewer tags Bioenergetics and Morphology of Mussels (Mytilus trossulus) in Kenai Fjords National Park This dataset provides one table of bioenergetic and morphological measurements of Pacific blue mussels (Mytilus trossulus; N = 444) collected at three intertidal sites in Kenai Fjords National Park, Alaska. Mussels were collected at the same tidal height across all three sites on a nearly monthly basis from 2014-2015. Categories: Data; Tags: Aialik Bay, Alaska, Animal morphology, Animals/Invertebrates, Aquatic Biology, All tags... Bioenergetics, Biomass dynamics, Biota, Bivalves, Calorimetry, Coastal ecosystems, Ecology, Environment, Gulf of Alaska, Intertidal environments, Kenai Fjords National Park, Macroinvertebrates, Marine ecosystems, Mollusks, Resurrection Bay, Shellfish, USGS Science Data Catalog (SDC), Wildlife Biology, 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 Blood Parasite Infection Data from Northwestern Crows (Corvus caurinus), Alaska, 2007-2008 This data set consists of two tables associated with a study of Haemosporidian parasite infection in Northwestern Crows (Corvus caurinus) sampled at six locations throughout southcentral and southeast Alaska in 2007-2008. The first table contains species, location, banding, and morphometric data for all samples. The second table contains results from heamosporidian parasite screening of crow blood samples using molecular techniques. Genomic DNA was extracted from blood samples and screened for the presence of Haemoproteus, Plasmodium, and Leucocytozoon blood parasites using a nested-PCR method. Parasite genetic data is provided as GenBank accession numbers for any samples that tested positive for haemosporidian... Categories: Data; Tags: Alaska, Animals/Vertebrates, Avian physiology, Biological science disciplines, Biology, All tags... Biosphere, Biota, Birds, Birds, Blood parasites, DNA Sequencing, Disease, Disease vectors, Ecological dynamics, Ecology, Environment, Genetic diversity, Genetic variance, Genetics, Genetics, Genetics, Haemosporidians, Haines, Hematozoa, Homer, Juneau, Kenai, Life sciences, Natural science disciplines, Parasitic diseases, Parasitism, Parasitology, Parasitology, Pathologic processes, Perching birds, Polymerase chain reaction, Sciences, Seward, Species/Population interactions, USGS Science Data Catalog (SDC), Valdez, Vector borne diseases, Wildlife Biology, Wildlife Disease, Wildlife biology, Zoology, 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 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 USGS Alaska Science Center Adult Shorebird Morphological Measurement Data This dataset consists of three tables, 1) taxonomy, 2) contributors, and 3) shorebird morphological measurements collected from various species captured from 1977-2021. In addition, photographs of plumage patterns are available for several species. Researchers with the U.S. Geological Survey - Alaska Science Center, along with collaborators from many government agencies and research institutions, have studied shorebirds at numerous sites across North America, the Pacific Ocean, Australia, and New Zealand. This release includes over 10,000 observations relating to 35 shorebird species. Version History: First release: July 2023 Revised: October 2023 (ver. 2.0) Categories: Data; Tags: Age estimation methods, Alaska, Alaska Peninsula, Angyoyaravak Bay, Animal morphology, All tags... Animal tracking, Animals/Vertebrates, Arctic Coastal Plain, Argos, Australia, Avian physiology, Biota, Birds, Body size, Broome, Canada, Capturing (animals), Colville River Delta, Ecology, Environment, GPS, Golden Bay, James Bay, Migratory birds, Mingan Archipelago, Naval Air Station Palmyra, Nevada, New Zealand, North Slope, Oregon, PTT, Plovers, Plumage, Pribilof Islands, Pūkorokoro, Radio transmitter, Saint George Island, Saint Matthew Island, Saint Paul Island, Sandpipers, Satellite transmitter, Seward Peninsula, Shorebirds, USGS Science Data Catalog (SDC), VHS, Waders/Gulls/Auks and Allies, Wildlife, Wildlife Biology, Yellowknife, Yukon-Kuskokwim River Delta, Fewer tags