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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 (12) Past week (4) Past day (0) Custom range... To   Search Contacts Alaska Science Center U.S. Geological Survey, Alaska Science Center Ecosystems USGS ScienceBase Team U.S. Geological Survey More... Categories Data (13) Tag Types Theme (13) Place (13) USGS Scientific Topic Keyword (13) Harvest Set (13) Tag Schemes None (13) USGS CSA Biocomplexity Thesaurus (13) NASA GCMD Earth Science Keyword Thesaurus (13) USGS Thesaurus (12) NGA GEOnet Names Server (5) USGS Geographic Names Information System (GNIS) (11) ISO 19115 Topic Category (13) 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 Macroinvertebrates from Rivers in Northwest Alaska, 2015-2019 This dataset contains taxonomic information, counts, and lengths of macroinvertebrates collected from rivers in northwest Alaska using drift and kick nets during summer and fall 2015-2019. Version History: First release: February 2024 Revised: August 2024 (ver. 1.1) Categories: Data, Data Release - Revised; Tags: Actinopterygii, Age composition, Alaska, Animals/Invertebrates, Animals/Invertebrates, All tags... Aquatic Biology, Aquatic Invertebrates, Aquatic ecosystems, Arachnida, Arctic, Arthropods, Arthropods, Biota, Bivalvia, Clitellata, Ecology, Entognatha, Environment, Freshwater ecosystems, Gastropoda, InlandWaters, Insecta, Macroinvertebrates, Nemata, Turbellaria, USGS Science Data Catalog (SDC), Water Quality, Fewer tags Data from Black Brant (Branta bernicla nigricans) Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico This data package includes two child items with data from Pacific Black Brant (Branta bernicla nigricans) during winter and migration periods. Child Item One: "Body mass, Morphological Measurements, Flock Counts, and Age-Ratios from Black Brant Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico". The data include: (1) body mass and morphological measurements from sport hunter harvested brant, and (2) census counts of brant in Bahia de San Quintin, (3) counts for flock age ratio determination, and (4) behavior. Child Item Two: "Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico". Data from brant tagged with VHF radio transmitters in July 1999 on... Categories: Data, Data Release - Revised; Tags: Alaska, Animal populations, Animals/Vertebrates, Bahia San Quintín, Baja California, All tags... Baja California Sur, Biota, Birds, Black Brant, Branta bernicla nigricans, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Izembek National Wildlife Refuge, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Yukon Delta, Yukon Delta National Wildlife Refuge, Yukon Kuskokwim Delta, Fewer tags Detection of Seagrass Pathogens Using Environmental DNA (eDNA), North Pacific, 2016-present This data set is comprised of one table with sampling information and NCBI BioProject accession numbers for sequence information of this amplicon-based study targeting Labyrinthula, Phytophthora, and Halophytophthora of known pathogenic and non-pathogenic [to eelgrass (Zostera marina)] strains from eDNA samples. eDNA samples included water, sediment, and eelgrass from Notsuke Wan (Cove) Japan, Safety Sound, Izembek Lagoon, Port Moller, Chignik Lagoon, and Frederick Sound, Alaska and cloacal swabs from waterfowl hunted near Cold Bay Alaska. Replicate samples and multiple sampling dates of the same location were included. Highly conserved primers which could differentiate species of interest were developed for four... Categories: Data, Data Release - Revised; Tags: Alaska, Animals/Vertebrates, Aquatic Biology, Aquatic ecosystems, Biological informatics, All tags... Biota, Birds, DNA Primers, DNA, Mitochondrial, Databases, Nucleic acid, Decline (Plant disease), Disease detection, Disease spread, Disease vectors, Ducks/Geese/Swans, Ecological processes, Ecosystem, Ecosystem diversity, Environment, Environmental DNA, Environmental DNA, Feasibility studies, Field sampling, Genetics, Halophytophthora, Hokkaido, Izembek National Wildlife Refuge, Japan, Labyrinthula sp., Labyrinthula zosterae, Marine biology, Marine environment monitoring, Mitochondrial DNA, Ocean circulation, Oceans and Seas, Phytophthora gemini, Plants, Species/Population Interactions, USGS Science Data Catalog (SDC), Zostera marina, eDNA, 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 Greater White-Fronted Goose Genetic Data, Circumpolar, 1988-2009 This data set describes nuclear microsatellite genotypes derived from eight autosomal loci (BCA6, BCA9, BCA11, BCA5, CRG, OXY13, TSP1.20.09 and TSP1.20.46) and a 366 base pair portion of the mitochondrial control region. A total of 665 Greater White-fronted Geese were examined by genotyping and 518 by sequencing with samples coming from its circumpolar range representing multiple flyways (Midcontinent, Pacific, Greenland, Palearctic). The sex of most samples was determined in the field by morphology or cloacal examination. Version History: First release: June 2018 Revised: July 2018 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Alleles, Anadyr, Anderson River, Animals/vertebrates, All tags... Anser albifrons, Biota, Birds, Bristol Bay, Brooks Range, Colville River, Cook Inlet, DNA, Ducks/Geese/Swans, Environment, Gene Flow, Genetic Markers, Genetic Variance, Genetics, Genetics, Genotype, Greater White-Fronted Goose, Greenland, Innoko National Wildlife Refuge, Ireland, Kanuti National Wildife Refuge, Kava, Kent Peninsula, Kolyma, Koyukuk National Wildlife Refuge, Kuparuk River, Kuskokwim River, Lena, MacKenzie River, Microsatellite Repeats, Molecular biology, North Slope, Northwest Territories, Nunavut, Old Crow Flats, Point Lay, Polymerase chain reaction, Population differentiation, Population genetics, Queen Maud Gulf, Rasmussen Basin, Selawik National Wildlife Refuge, Speciation (biological), Taimyr, Terrestrial Ecosystems, Terrestrial ecosystems, USGS Science Data Catalog (SDC), Vaygach, Victoria Island, Wildlife, Wildlife Biology, Yana, Yukon, Yukon River, Yukon–Kuskokwim Delta, Fewer tags Black Brant (Branta bernicla nigricans) Radio Detection and Migration Timing Alaska to Mexico This is a child item of the USGS Data Release: https://doi.org/10.5066/F7T43R88 This data package provides data from Pacific Black Brant (Branta bernicla nigricans) tagged with VHF radio transmitters in July 1999 on the Yukon Kuskokwim Delta, Alaska and detected in the following two years during their annual migration. Data include: 1) one table with attributes of the tagged brant, 2) one table with estimated dates of migration events, and 3) seven tables of detection data from radio tracking scans at coastal sites between Alaska and Mexico. Version History: First release: April 2023 Revised: February 2024 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alaska, Animal populations, Animals/Vertebrates, Bahia San Quintín, Baja California, All tags... Baja California Sur, Biota, Birds, Black Brant, Branta bernicla nigricans, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Izembek National Wildlife Refuge, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Yukon Delta, Yukon Delta National Wildlife Refuge, Yukon Kuskokwim Delta, 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 Data from Prince William Sound: Distribution, Abundance, and Morphology of Fish, Zooplankton, and Predators and Oceanographic Conditions This data package is part of the Gulf Watch Alaska (GWA) long term monitoring program, pelagic monitoring component and includes 10 child items with data pertaining to oceanographic conditions and the distribution, abundance, and morphology of forage fish in Prince William Sound. Child Item One: "Conductivity, Temperature, Depth Profile Data from Prince William Sound, Alaska". The data include: (1) conductivity-temperature-depth profile data from Prince William Sound, Alaska. Child Item Two: "Forage Fish Aerial Validation Data from Prince William Sound, Alaska". The data include: (1) fish aerial validation data from summer surveys in Prince William Sound, Alaska, and (2) taxonomic classification of fish encountered... Categories: Data, Data Release - Revised; Tags: Acoustic backscatter, Age composition, Alaska, Animals/Vertebrates, Aquatic Biology, All tags... Bioenergetics, Biota, Calorimetry, Capelin, Coastal ecosystems, Conductivity, Depth, Ecology, Environment, Euphausiids, Field sampling, Fish, Fisheries, Food fishes, Food web, Forage fish, Gulf of Alaska, Hydroacoustics, Macrozooplankton, Marine ecosystems, Marine fishery resources, Nautical area scattering coefficient, Oceans, Pacific Sand Lance, Pelagic habitat, Prince William Sound, Salinity, Sandlance, Seabirds, Sensors, Strip transects, Temperature, Trawling, Turbidity, USGS Science Data Catalog (SDC), Water Quality, Water samples, Wildlife, Wildlife Biology, Zooplankton, 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. 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 Body mass, Morphological Measurements, Flock Counts, and Age-Ratios from Black Brant Overwintering in Three Lagoons Along the Baja California Peninsula, Mexico This is a child item of the USGS Data Release: https://doi.org/10.5066/F7T43R88 This data package includes four tables of data from Pacific Black Brant (Branta bernicla nigricans) wintering along the Baja California Peninsula and Sonoran coasts of Mexico. The data include: (1) body mass and morphological measurements from sport hunter harvested brant, and (2) census counts of brant in Bahia de San Quintin, (3) counts for flock age ratio determination, and (4) behavior. Version History: First release: April 2023 Revised: February 2024 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Animal populations, Animals/Vertebrates, Bahia San Quintín, Baja California, Baja California Sur, All tags... Biota, Birds, Black Brant, Branta bernicla nigricans, Brent Goose, Coastal ecosystems, Ecological dynamics, Environment, Laguna Ojo de Liebre, Laguna San Ignacio, Mexico, Migratory birds, Population dynamics, Species life history, Species/population interactions, USGS Science Data Catalog (SDC), Waterfowl, 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 Conductivity, Temperature, Depth Profile Data from Prince William Sound, Alaska This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z. These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, pelagic monitoring component. This dataset consists of multiple tables (one for each year of sampling), providing several physical oceanographic measures at sampling stations throughout Prince William Sound, Alaska. Data were collected with a Seabird Electronics conductivity-temperature-depth (CTD) profiler equipped with various sensors and data were processed with Seabird Electronics software. Data include: date, time, latitude, longitude, depth, conductivity, temperature, salinity, turbidity, fluorescence, density, oxygen, pH, Par, sound velocity, beam... Categories: Data, Data Release - Revised; Tags: Alaska, Aquatic Biology, Biota, Conductivity, Conductivity-temperature-depth profiler, All tags... Depth, Ecology, Environment, Gulf of Alaska, Oceans, Pelagic habitat, Prince William Sound, Salinity, Seabird Electronics, Sensors, Temperature, Turbidity, USGS Science Data Catalog (SDC), Water Quality, Wildlife Biology, photosynthetically active radiation, Fewer tags