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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 the Inventory of Montane-nesting Birds in the Aniakchak National Monument and Preserve, Alaska Data from the Inventory of Montane-nesting Birds in the Arctic Network of National Parks, Alaska More... Filters Date Range Past year (7) Past month (6) Past week (2) Past day (0) Custom range... To   Search Contacts Alaska Science Center USGS ScienceBase Team Ecosystems Sarah A Sonsthagen George G Esslinger More... Categories Data (7) Tag Types Theme (7) Place (7) USGS Scientific Topic Keyword (7) Harvest Set (7) Tag Schemes None (7) USGS Thesaurus (7) NASA GCMD Earth Science Keyword Thesaurus (7) USGS CSA Biocomplexity Thesaurus (7) ISO 19115 Topic Category (7) USGS Geographic Names Information System (GNIS) (6) NIH MeSH Thesaurus (1) 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 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 Avian Habitat Data, Seward Peninsula, Alaska, 2012 This data package contains two tables with habitat measurements from each sampling point used in avian point-transect surveys on the Seward Peninsula in 2012 and the locations of those sites. Measurements include percent cover and canopy height of alder (Alnus spp.), dwarf birch (Betula spp.), ericaceous shrubs (e.g., Empetrum, Vaccinium spp.), herbaceous, lichen (e.g., Cladonia spp.), and willow (Salix spp.). Version History: First release: January 2015 Revised: February 2023 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Alpine/Tundra, Animals/Vertebrates, Avian abundance, Biogeography, All tags... Biological productivity, Biota, Birds, Botany, Community structure, Distribution, Ecology, Environment, Habitat preferences, Habitats, Migratory birds, Perching birds, Seasonal distribution, Seward Peninsula, Shrubland/Shrubs, Species richness, Terrestrial ecosystems, USGS Science Data Catalog (SDC), Vegetation survey, Wildlife, Wildlife Biology, Fewer tags Intertidal Soft-Sediment Bivalves from Prince William Sound, Kachemak Bay, Katmai National Park and Preserve, and Kenai Fjords National Park These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program and describe bivalve count and size sampling and observations conducted at intertidal soft-sediment sampling sites in the northern Gulf of Alaska. This dataset consists of five comma separated files (.csv): 1) bivalve taxonomy table, 2) bivalve sampling site table, 3) bivalve count table, 4) bivalve size table, and 5) list of Gulf Watch Alaska principal investigators and collaborators. Version History: First release: November 2018 Revised: September 2022 (ver. 2.0) Revised: October 2023 (ver. 3.0) Categories: Data, Data Release - Revised; Tags: Alaska Peninsula, Animals/Invertebrates, Aquatic Biology, Aquatic biology, Aquatic ecosystems, All tags... Aquatic ecosystems, Benthic ecosystems, Benthic habitat, Biota, Bivalve, Coastal ecosystems, Coastal habitat, Ecology, Ecology, Environment, Field inventory and monitoring, Field sampling, Gulf of Alaska, Kachemak Bay, Katmai National Park and Preserve, Katmai National Park and Preserve, Kenai Fjords National Park, Kenai Fjords National Park, Macroinvertebrates, Marine ecosystems, Marine environment monitoring, Marine environments, Mollusks, Prince William Sound, Size distribution, Spatial distribution, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Genomic Data from Ptarmigan and Grouse, Alaska This data set provides sample data and NCBI accession information for genomic sequencing of ptarmigan and grouse from Alaska. Version History: First release: July 2020 Revised: December 2021 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Bonasa umbellus, All tags... DNA sequencing, Dendragapus fuliginosus, Environment, Falcipennis canadensis, Fowl, Galliformes, Genetic diversity, Genetics, Genomics, Herbivores, Lagopus lagopus, Lagopus leucura, Lagopus muta, Population Genetics, Rock ptarmigan, Ruffed grouse, Sharp-tailed grouse, Sooty grouse, Spruce grouse, Terrestrial ecosystems, Transcriptome, Tundra ecosystems, Tympanuchus phasianellus, USGS Science Data Catalog (SDC), Upland game birds, White-tailed ptarmigan, Wildlife, Wildlife Biology, Willow ptarmigan, ddrad, double digestion restriction associated DNA, exon capture, whole genome, whole methylome, whole mitogenome, whole transcriptome, Fewer tags Avian Point Transect Survey, Seward Peninsula, Alaska, 2012 This data package contains three tables: 1) avian point-transect survey data collected on the Seward Peninsula in 2012, 2) locations of all survey sites, and 3) an avian taxonomy table for reference. Version History: First release: January 2015 Revised: February 2023 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Alpine/Tundra, Animals/Vertebrates, Avian abundance, Biogeography, All tags... Biological productivity, Biota, Birds, Community ecology, Community structure, Distribution, Ecology, Environment, Habitat preferences, Habitats, Migratory birds, Perching birds, Seasonal distribution, Seward Peninsula, Species richness, Terrestrial ecosystems, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Hawaiian Coot (Fulica alai) and Hawaiian Gallinule (Gallinula galeata sandvicensis) Microsatellite and Mitochondrial DNA Data, 2014-2016, Oahu, Kauai, and Molokai, Hawaii This data set describes nuclear microsatellite genotypes derived from twenty-one autosomal loci (Fal02, Fal04, Fal07, Fal08, Fal10, Fal12, Fal14-1, Fal16, Fal 17, Fal19, Gch03, Gch06, Gch07, Gch12, Gch13, Gch14, Gch17, Gch19, Pho110, KiRa9-1, and KiRa10) and nucleotide sequence data derived from two mitochondrial DNA loci (control region and NADH dehydrogenase 2). Samples were collected on Oahu, Kauai, Molokai, Hawaii, United States of America. Samples used in the study originated from blood or feather samples collected in the field from live trapped birds or from tissue taken from dead birds or museum specimens according to each institution's load policies and procedures. We compared historical (samples collected... Categories: Data, Data Release - Revised; Tags: Alleles, Animals/Vertebrates, Biota, Birds, Common Gallinule, All tags... Cranes and Allies, DNA sequencing, DNA, Mitochondrial, Environment, Evolution, Genetic diversity, Genetic diversity, Genetic markers, Genetic variance, Genetics, Genotype, Hawaii, Hawaiian Common Gallinule, Hawaiian Coot, Hawaiian Gallinule, Kauai, Microsatellite repeats, Molokai, Oahu, Polymerase chain reaction, Population genetic, Terrestrial ecosystems, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags