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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 Pacific Walrus Coastal Haulout Occurrences Interpreted from Satellite Imagery Rocky Intertidal Data from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park Filters Date Range Past year (51) Past month (49) Past week (5) Past day (0) Custom range... To   Search Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Alaska Science Center USGS ScienceBase Team Barbara J Pierson Sandra L Talbot David H Ward More... Categories Data Release - Revised (2) Tag Types Theme (51) Place (49) USGS Scientific Topic Keyword (50) Harvest Set (50) Tag Schemes None (46) USGS Thesaurus (48) NASA GCMD Earth Science Keyword Thesaurus (48) USGS CSA Biocomplexity Thesaurus (47) USGS Geographic Names Information System (GNIS) (47) ISO 19115 Topic Category (51) NGA GEOnet Names Server (14) More... View Results as: JSON ATOM CSV Browse Folder

Cryptosporidium and Giardia Occurrence Data in Wildlife from Arctic Alaska, 2012-2017 This dataset consists of one table with sample collection locations and results of screening resident wildlife for Cryptosporidium and Giardia in the Alaskan Arctic, 2012-2017. We analyzed feces collected from polar bear, Pacific walrus, Arctic fox, and caribou with MERIFLUOR direct immunofluorescence assay to determine the presence of Cryptosporidium oocysts and Giardia cysts. Categories: Data; Tags: Alaska, Animals/Vertebrates, Arctic fox, Biota, Caribou, All tags... Cryptosporidium, Cryptosporidium, Disease detection, Disease reservoirs, Disease vectors, Endangered species, Environment, Giardia, Giardia, Health and disease, Indicator species, MERIFLUOR Cryptosporidium/Giardia direct immunofluorescent assay, Mammals, Migratory species, Odobenus rosmarus divergens, Pacific walrus, Parasitic diseases, Polar bear, Rangifer tarandus, Tundra ecosystems, USGS Science Data Catalog (SDC), Ursus maritimus, Vulpes lagopus, Wildlife, Wildlife Biology, Wildlife Disease, Wildlife disease, 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; 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 Eelgrass (Zostera marina) Percent Cover Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has one comma separated values (.csv) table with estimates of eelgrass (Zostera marina) percent cover. Eelgrass cover was estimated from sonar and video drop cameras deployed from boats following prescribed survey transects. Categories: Data; Tags: Alaska, Alaska Peninsula, Angiosperms (flowering plants), Animal and plant census, Aquatic Biology, All tags... Biological productivity, Biota, Coastal ecosystems, Ecosystem monitoring, Eelgrass, Environment, Estuarine ecosystems, Gulf of Alaska, Katmai National Park and Preserve, Kenai Fjords National Park, Marine ecosystems, Monocots, Nearshore ecology, Prince William Sound, Relative abundance analysis, Seagrass, Seagrass beds, USGS Science Data Catalog (SDC), Wildlife Biology, Zostera marina, Fewer tags Genetic Data from Cooper's Hawks (Accipiter cooperii), North America This data set describes nuclear microsatellite genotypes derived from six autosomal loci (AgCA222, Age7.1JT, BV13, BV20, NVH206, NVH195-2) in Cooper's Hawks. Samples originated from blood samples collected from live trapped birds. Version History: First release: December 2020 Revised: February 2022 (ver. 2.0) Categories: Data; Tags: Accipiter cooperii, AgCA222, Age7.1JT, Alleles, Animals/Vertebrates, All tags... BV13, BV20, Biota, Birds, Birds of prey, British Columbia, Cooper's Hawk, DNA, Eagles/Falcons/Hawks and Allies, Environment, Gene Flow, Genetic Markers, Genetics, Genetics, Genotype, Microsatellite Repeats, NVH195-2, NVH206, North Dakota, Polymerase chain reaction, Population Genetics, Raptors, Site Fidelity, Terrestrial ecosystems, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Wisconsin, 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. Categories: Data; 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 Scoter (Melanitta sp.) ddRAD SNP and Microsatellite Genetic Data, North America and Europe, 1977-2012 This data set contains sampling information, allele sizes of 11 microsatellite loci, and Genbank accession numbers of ddRAD seq results for scoters (Melanitta sp.). Microsatellite data is provided for three North American species of scoter (black scoter, M. americana n = 61; white-winged scoter, M. deglandi, n = 208; surf scoter, M. perspicillata, n = 145) and their European congeners (common scoter, M. nigra, n = 19; velvet scoter, M. fusca, n = 20). Individuals with ddRAD results include 27 black scoters, 4 common scoters, 32 surf scoters, 28 white-winged scoters, and 4 velvet scoters. Categories: Data; Tags: Alaska, Alleles, Animals/Vertebrates, Baja California, Biota, All tags... Birds, British Columbia, Canada, Coastal ecosystems, DNA, DNA Primers, Denmark, Environment, Estuarine habitat, Gene Flow, Genetic markers, Genetic structure, Genetics, Genetics, Melanitta americana, Melanitta deglandi, Melanitta fusca, Melanitta nigra, Melanitta perspicillata, Mexico, Microsatellite Repeats, Midtjylland, Migratory birds, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Polymerase chain reaction, Population dynamics, Quebec, Rhode Island, Saskatchewan, Seasonal distribution, Seasonal movement, Sjælland, Syddanmark, Terrestrial ecosystems, USGS Science Data Catalog (SDC), Virginia, Washington, Waterfowl, Wetland ecosystems, Wildlife, Wildlife Biology, Fewer tags Point Sampling Data for Eelgrass (Zostera marina) and Widgeongrass (Ruppia marina) Abundance in Embayments of the North Pacific Coast of Baja California, Mexico These data are in seven tables relating to surveys of eelgrass (Zostera marina) and widgeongrass (Ruppia maritima) beds in embayments of the north Pacific coast of Baja California, Mexico. The tables provide environmental conditions, eelgrass and widgeongrass abundance, and measurements used to estimate their aboveground biomass. These tables also provide information on percent cover, location, and tide height of eelgrass, widgeongrass and seaweeds, and water conditions during the survey. Version History: First release: March 2022 Revised: April 2023 (ver. 2.0) Categories: Data; Tags: Algae, Algae, Angiosperms (flowering plants), Animal and plant census, Aquatic Biology, All tags... Aquatic ecosystems, Aquatic plants, Bahia San Quintin, Baja California, Benthic habitat, Biological productivity, Biomass, Biota, Coastal ecosystems, Ecology, Eelgrass, Environment, Estuarine ecosystems, Field inventory and monitoring, Laguna Ojo de Liebre, Laguna San Ignacio, Macroalgae (seaweeds), Marine ecosystems, Mexico, Monocots, Plot sampling, Relative abundance analysis, Ruppia maritima, Seagrass, Seagrass beds, Seaweeds, USGS Science Data Catalog (SDC), Vascular plants, Widgeongrass, Zostera marina, Fewer tags Marine Bird and Mammal Survey Data from 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, nearshore monitoring component. The dataset is comprised of six comma separated values (.csv) file exported from a relational database. The data consist of 1) summer marine bird and mammal densities, 2) winter marine bird and mammal densities, 3) summer marine bird and mammal observations, 4) winter marine bird and mammal observations, 5) summer marine bird and mammal survey strip transects, and 6) winter marine bird and mammal survey strip transects. Version History: First release: December 2017 Revised: July 2024 (ver. 2.0) Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Coastal ecosystems, All tags... Community ecology, Ecology, Ecology, Environment, Environmental proxies, Field inventory and monitoring, Field sampling, Gulf of Alaska, Intertidal zone, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Macroinvertebrates, Mammals, Marine ecosystems, Marine environment monitoring, Marine environments, Marine mammals, Nearshore ecology, Population density, Population trend, Relative abundance, Seabirds, Shorebirds, Spatial distribution, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Molecular Sexing of Birds Using Quantitative PCR (qPCR) of Sex-Linked Genes and Logistic Models This dataset provides cycle threshold (Ct) values achieved during qPCR for 6 sex-linked genes, and two autosomal genes, for individuals from 60 species and across 13 orders of birds. Categories: Data; Tags: Alaska, Animals/Vertebrates, Biota, Birds, DNA, All tags... Environment, Genetic Markers, Genetics, Genetics, Laboratory methods, Polymerase chain reaction, Quantitative PCR, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, qPCR, 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 Pacific Walrus Coastal Haulout Images from Remote Camera Stations This data package contains 362 digital photos of a walrus haulout location at Cape Greig, on the Alaska Peninsula summer 2023 (2023-05-09 23:01:08 UTC through 2023-11-16 21:01:14 UTC). Photos were taken up to three times daily from a remotely operated camera located on a bluff above the haulout. The camera station was installed in the early spring 2023, prior to arrival of walruses at the site. Images are transferred via satellite link. Version History: First release: June 2023 Revised: January 2024 (ver. 2.0) Categories: Data; Tags: Alaska, Animals/vertebrates, Bering Sea, Biota, Cape Greig, All tags... Carnivores, Coastal ecosystems, Environment, Field inventory and monitoring, Image collections, Mammals, Marine ecosystems, Marine mammals, Migratory species, Odobenus rosmarus divergens, Pacific Walrus, Pinniped, Remote photo imagery, Remote sensing, Seals/sea lions/walruses, Seasonal distribution, USGS Science Data Catalog (SDC), Walrus, Wildlife, Wildlife Biology, Fewer tags Genetic Data from Wolverine (Gulo gulo) of North America These data are comprised of two tables, one table containing wolverine (Gulo gulo) sample and genetic information for 20 microsatellite loci (Gg10-1, Gg25, Gg37-2, Gg42-1, Gg192-1, Gg443, Gg452, Gg454, Gg465, Gg471, Gg473, Gg-3-1, Gg-4, Gg-7-1, Ggu_216-1, Lut604, Ma-3-1, Mvis075, Tt-1, and Tt-4) and genetic sex determination results from North America and one Russian wolverine. All samples were obtained from collections at the University of Alaska Museum of the North or the University of New Mexico’s Museum of Southwestern Biology. The second table provides complete primer information for the genetic markers since several were redesigned from their originally-published sequences for this study. Categories: Data; Tags: Alaska, Alleles, Animals/Vertebrates, Biota, British Columbia, All tags... Canada, Carnivores, Chukotka, DNA, DNA Primers, Environment, Gene Flow, Genetic diversity, Genetic markers, Genetic structure, Genetics, Genetics, Gulo gulo, Kenai Peninsula, Mammals, Martens/Weasels/Wolverines, Microsatellite Repeats, Nunavut, Polymerase chain reaction, Population Genetics, Russia, Sexing (plants & animals), Terrestrial ecosystems, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Wolverine, Yukon, Fewer tags Pathogen Exposure Data for Chukchi Sea Polar Bears 1988-1994 and 2008-2017 This dataset is one table with results of tests to determine exposure of Chukchi Sea polar bears to a suite of pathogens. Results are serological tests for antibodies and tests of fecal samples for presence of parasites. Serologic assays were conducted for Toxoplasma gondii, Neospora caninum, Francisella tularensis, Coxiella burnetii, Leptospira spp., Brucella canis, Brucella abortus/suis, and canine distemper virus. Parasitology analyses were conducted for presence of Giardia cysts and Cryptospiridium oocysts in fecal samples. Polar bears were sampled on sea ice in the Chukchi Sea between mid-March and early May 1987-1994 and 2008-2017. The dataset includes relevant information about the bears that were captured... Categories: Data; Tags: Age composition, Alaska, Animals/Vertebrates, Bacterial diseases, Bears, All tags... Beaufort Sea, Biota, Brucella, Brucella abortus, Brucella canis, Carnivores, Chukchi Sea, Coastal ecosystems, Coxiella, Coxiella burnetii, Cryptosporidium, Disease detection, Environment, Francisella, Francisella tularensis, Giardia, Health and disease, Immunology, Mammals, Marine ecosystems, Marine mammals, Neospora, Neospora caninum, Parasitic diseases, Parasitism, Pathology, Polar bear, Serology, Toxoplasma, Toxoplasma gondii, USGS Science Data Catalog (SDC), Ursus maritimus, Viruses, Wildlife, Wildlife Biology, Wildlife Disease, Wildlife disease, Fewer tags U.S. Fish and Wildlife Service Argos GPS Satellite Tracking Data for Lesser Yellowlegs (Tringa flavipes) This data package contains location data collected by the Argos System (CLS America, Inc.) from satellite transmitters attached to 116 Lesser Yellowlegs captured at multiple sites across their breeding and nonbreeding range in North America, 2018-2021. The raw data were processed to accomplish two goals: 1) flag implausible location and 2) remove locations within Joint Base Elmendorf-Richardson (JBER) and Eielson Air Force Base boundaries. Removal of locations in military land boundaries is required due to federal guidelines by Department of Defense (DoD) Public Affairs office and DoD Partners in Flight. Due to data sharing constraints of participating agencies, not all the locations (i.e., latitude and longitude)... Categories: Data; Tags: Alaska, Anchorage, Animal tracking, Animals/Vertebrates, Annual cycle, All tags... Argos, Biota, Birds, Breeding sites, Canada, Capture-recapture studies, Central America, Churchill, Coastal ecosystems, Ecology, Eielson AFB, Environment, Ile Nue de Mingan, James Bay, Joint Base Elmendorf-Richardson, Kanuti National Wildlife Refuge, Marine ecosystems, Migratory birds, Migratory rates/routes, Migratory species, Non-breeding range, Ornithology, Overwintering, Satellite transmitter, Seasonal distribution, Seasonal movement, South America, Species life history, Tagging devices, The Caribbean, Tracking equipment, USGS Science Data Catalog (SDC), United States of America, Waders/Gulls/Auks and Allies, Wildlife, Wildlife Biology, Yellowknife, Fewer tags Southern Beaufort Sea Polar Bear Blood Based Analyte Data, 1983-2018 This dataset is one table with data collected and derived from polar bears sampled in Alaska's southern Beaufort Sea during 1983-2018. Collected data includes demographic and morphometric information. Derived data includes blood-based analyte values determined from whole blood and serum samples. Serum samples were analyzed on an Abaxis VS2 Biochemistry Analyzer and whole blood samples were analyzed on an Abaxis HM5 Diagnostic Analyzer. VS2 analysis quantified values of 13 biochemistry analytes for the period 1983-2016. Complete blood count (CBC) analyte values were quantified from the HM5 analysis for the period 2005-2018. These data were used to (i) generate reference ranges of serum biochemistry analyte values... Categories: Data; Tags: Alaska, Animals/Vertebrates, Bears, Beaufort Sea, Biota, All tags... Carnivores, Coastal ecosystems, Environment, Mammals, Marine ecosystems, Marine mammals, Threatened species, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags Walrus Haulout Outlines Apparent from Satellite Imagery Near Point Lay Alaska, Autumn 2018-2020 These data are in three folders of Keyhole Markup Language (KML) geospatial polygons representing the outlines of walrus herds apparent in satellite imagery. Each KML file contains one or more geospatial polygons of walrus herd outlines created by one observer who visually interpreted the images. The attribute values from all KML files are collected in a CSV table included with this data package. Additional walrus satellite image-derived Chukchi Sea walrus haulout outlines are available in another USGS data release (Fischbach and Douglas 2022; https://doi.org/10.5066/P9CSM0KN) Categories: Data; Tags: Aerial surveys, Age composition, Alaska, Animals/Vertebrates, Biota, All tags... Carnivores, Chukchi Sea, Coastal ecosystems, Environment, Field inventory and monitoring, Mammals, Marine ecosystems, Marine mammals, Migratory species, Odobenus rosmarus divergens, Pacific Walrus, Point Lay, Remote sensing, Seals/sea lions/walruses, Seasonal distribution, USGS Science Data Catalog (SDC), Walrus, Wildlife, Wildlife Biology, Fewer tags Movement Data for Migrating Geese Over the Northeast Pacific Ocean, 2018-2021 This dataset consists of one table with a record (row) for each goose location and columns containing location information and covariates. The dataset was used in an analysis of altitude selection and flight propensity in an accompanying paper (Weiser et al. 2024) and is being provided here to allow replication of that analysis. Goose locations (latitude, longitude, and altitude) were collected with GPS tags and represent three subspecies: Pacific Greater White-fronted Goose, Tule Greater White-fronted Goose, and Lesser Snow Goose. Covariates include weather information from ERA5 (Hersbach et al. 2022). In addition to the "used" locations (altitudes at which birds were recorded), the dataset also includes "available"... Categories: Data; Tags: Alaska, Animal behavior, Animal tracking, Animals/Vertebrates, Anser albifrons elgasi, All tags... Anser albifrons sponsa, Anser caerulescens caerulescens, Biota, Birds, British Columbia, California, Ducks/Geese/Swans, Environment, GPS, Geospatial datasets, Greater White-fronted Goose, Human impacts, Human wildlife interactions, Marine ecosystems, Migration (organisms), Migratory birds, Migratory rates/routes, Oregon, Pacific Ocean, Pelagic habitat, Seasonal movement, Snow Goose, USGS Science Data Catalog (SDC), Washington, Waterfowl, Fewer tags Water Temperature, Electrical Conductivity, and Salinity of Lagoons in the Beaufort Sea, Alaska, 2017-2019 This dataset contains a table with temperature (°C), raw electrical conductivity (μS/cm), and salinity (psu) measured in Beaufort Sea, Alaska, Lagoons during summers 2017-2019. Categories: Data; Tags: Alaska, Beaufort Sea, Coastal ecosystems, Environment, Estuarine habitat, All tags... Intertidal environments, Jago Lagoon, Kaktovik Lagoon, Marine ecosystems, Oceans, Salinity, Simpson Lagoon, Stefansson Sound, USGS Science Data Catalog (SDC), Water Quality, Water conductivity, Water temperature, Water temperature, Fewer tags Tracking Data for Black Brant (Branta bernicla nigricans) This data package contains all location data collected by light-level geolocators attached to 68 Black Brant at breeding areas in Alaska. The data include: a deployment attributes file with details of each brant at the time of capture, the raw light-level data in ASCII files as downloaded and decompressed, and twice-daily estimated locations. Categories: Data; Tags: Alaska, Animal tracking, Animals/Vertebrates, Annual cycle, Baja California, All tags... Biota, Birds, Black brant, Branta bernicla nigricans, Breeding sites, Capture-recapture studies, Coastal ecosystems, Ducks/Geese/Swans, Environment, Light-level geolocator, Mexico, Migratory birds, Migratory rates/routes, Migratory species, NPR-A, National Petroleum Reserve-Alaska, Non-breeding range, Ornithology, Overwintering, Seasonal distribution, Seasonal movement, Species life history, Tagging devices, Telemetry, Tracking equipment, Tundra ecosystems, USGS Science Data Catalog (SDC), Waterfowl, Wildlife, Wildlife Biology, Yukon Delta, Yukon Delta National Wildlife Refuge, Yukon-Kuskokwim River Delta, Fewer tags Sea Otter Aerial Survey Data from Lower Cook Inlet and the Outer Kenai Peninsula, Alaska, 2002 This dataset consists of three tables related to abundance and distribution of northern sea otters (Enhydra lutris kenyoni) in lower Cook Inlet and the outer Kenai Peninsula, Alaska, based on data collected during a series of aerial surveys from May-Aug 2002. The dataset consists of: (1) sea otter counts along strip transects, (2) sea otter counts in Intensive Search Unit (ISU) within the transects, and (3) transect coordinates. **NOTE: 2002 data from survey sections in Kenai Fjords National Park are also included in another USGS data release available at https://doi.org/10.5066/F7CJ8BN7 Categories: Data; Tags: Abundance (organisms), Aerial surveys, Alaska, Animals/Vertebrates, Biota, All tags... Carnivores, Cook Inlet, Ecology, Ecosystem monitoring, Enhydra lutris kenyoni, Environment, Kenai Fjords National Park, Kenai Peninsula, Mammals, Marine mammals, Northern sea otters, Otters, Population density, Population dynamics, Sea otters, Spatial distribution, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags 1 2 3 »