SUPERSEDED: Pacific Walrus Coastal Haulout Occurrences Interpreted from Satellite Imagery, 2023

This data release has been SUPERSEDED. No data are provided here. The geospatial outlines and herd size estimates of Chukchi Sea autumn walrus haulouts, interpreted from Satellite imagery, have been combined into a single updated U.S. Geological Survey data release: https://doi.org/10.5066/P9CSM0KN This data release contains maps, geospatial files, and a table of the satellite imagery types with the dates when they were collected and examined to interpret the presence of, and area occupied by, walruses at terrestrial haulouts. Estimates of the land area occupied by walruses are provided based on interpretation by experienced image reviewers. The images are from a variety of Earth observing satellite imagery sources...

Tags: Alaska, Animals/vertebrates, Biota, Cape Serdtse-Kamen, Carnivores, All tags... Chukchi Sea, Chukotka, Coastal ecosystems, Environment, Field inventory and monitoring, Image collections, Mammals, Marine ecosystems, Marine mammals, Migratory species, Odobenus rosmarus divergens, Pacific Walrus, Pinniped, Point Lay, Remote sensing, Russia, Satellite imagery, Seals/sea lions/walruses, Seasonal distribution, USGS Science Data Catalog (SDC), Walrus, Wildlife, 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

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

Gulf Watch Alaska - Pelagic Ecosystems Forage Fish Component - Data from Prince William Sound: Distribution, Abundance, and Morphology of Fish, Zooplankton, and Predators and Oceanographic Conditions

This data package includes 10 child items with data about the distribution, abundance, and morphology of forage fish, zooplankton, and predators, and oceanographic conditions during summer surveys in Prince William Sound, Alaska. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised: September 2024 (ver. 4.0)

Categories: Data; Tags: Acoustic backscatter, Age composition, Alaska, Animals/Invertebrates, Animals/Vertebrates, All tags... Aquatic Biology, Aquatic birds, Aquatic mammals, Bioenergetics, Biomass, Biota, Calorimetry, Capelin, Coastal ecosystems, Conductivity, Ecology, Environment, Euphausiids, Fish, Fisheries, Fishery technology, Food fishes, Food web, Forage fish, Gulf of Alaska, Hydroacoustics, Inorganic Nutrients, Macrozooplankton, Marine ecosystems, Marine fishery resources, Marine mammals, Oceans, Pacific Sand Lance, Pelagic habitat, Photosynthetically active radiation, Plankton, Prince William Sound, Salinity, Sandlance, Sea ducks, Seabirds, Temperature, Turbidity, USGS Science Data Catalog (SDC), Wildlife Biology, Zooplankton, Fewer tags

Child Item 2: Marine Bird and Mammal Surveys in Gulf of Alaska Fjords, 2004-2011

This is a child item of the USGS Data Release: https://doi.org/10.5066/F7K072DR. These data describe marine bird and mammal surveys conducted in glacial fjords of coastal Alaska. Data were collected to document the at-sea distribution and abundance of marine birds and mammals in Glacier Bay National Park (2004), Prince William Sound (2010), Icy Bay (2011) and Yakutat Bay (2011). Following standard US Fish and Wildlife protocols for strip surveys.

Categories: Data; Tags: Alaska, Animals/Vertebrates, Aquatic birds, Aquatic mammals, Biota, All tags... Birds, DLOG, Ecology, Ecosystem monitoring, Environment, Field inventory and monitoring, Glacier Bay, Gulf of Alaska, Icy Bay, Marine ecosystems, Marine mammals, Oceans, Prince William Sound, Sea ducks, Seabirds, Strip transects, Transects, USGS Science Data Catalog (SDC), Wildlife Biology, Yakutat Bay, Fewer tags

Glacier Runoff in Gulf of Alaska Fjords, 2004-2011

This data package includes seven child items with data from environmental and biological statistics collected in fjords in the coastal areas of the Gulf of Alaska from 2004-2011. Child Item 1: "Oceanographic Profile Data from Gulf of Alaska Fjords, 2004-2011". This dataset contains physical oceanographic data within four fjords in the coastal area of the Gulf of Alaska. Child Item 2: "Marine Bird and Mammal Surveys in Gulf of Alaska Fjords, 2004-2011". This dataset describes marine bird and mammal surveys conducted in glacial fjords of coastal Alaska. Child Item 3: "Near-surface Nutrients Data from Gulf of Alaska Fjords, 2004-2011". This dataset contains nutrient data collected at stations within four fjords in...

Categories: Data; Tags: Alaska, Alaska Coastal Current, Ammonium, Animals/Vertebrates, Aquatic Biology, All tags... Aquatic birds, Aquatic mammals, Biomass, Biota, Birds, Conductivity, Conductivity-temperature-depth profiler, Copepod, DLOG, Depth, Ecology, Ecosystem monitoring, Environment, Euphausiid, Field inventory and monitoring, Fish, Forage fish, Fresh water river discharge, Freshwater, Glacier, Glacier Bay, Gulf of Alaska, Icy Bay, Inorganic nutrients, Krill, Marine ecosystems, Marine mammals, Nitrates, Nitrites, Ocean characteristics, Ocean monitoring, Oceans, Phosphates, Photosynthetically active radiation, Prince William Sound, Salinity, Sea ducks, Seabird Electronics, Seabirds, Sediment, Sensors, Silicic acid, Specimen sampling, Strip transects, Temperature, Tidewater glacier, Transects, Trawling, Turbidity, USGS Science Data Catalog (SDC), Volume, Water Quality, Water Resources, Water samples, Water sampling, Wildlife Biology, Yakutat Bay, Zooplankton, Fewer tags

Sea Otter Spraint Data from Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park and Prince William Sound

These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program. This dataset consists of observations of sea otter (Enhydra lutris) fecal samples (spraint). Observers examined fresh spraint piles to identify major prey classes in the samples and to determine sea otter diets in the Gulf of Alaska region. Version History: First release: July 2022 Revised: March 2023 (ver. 2.0) Revised: November 2023 (ver. 3.0) Revised: August 2024 (ver. 4.0)

Categories: Data; Tags: Alaska, Animals/Vertebrates, Aquatic biology, Aquatic ecosystems, Benthic ecosystems, All tags... Benthic habitat, Biota, Coastal ecosystems, Coastal habitat, Ecology, Ecology, Environment, Field sampling, Foraging behavior, Gulf of Alaska, Intertidal environments, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Marine ecosystems, Marine environment monitoring, Marine mammals, Otters, Prey consumption, Prince William Sound, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags

Child Item 05: Marine Bird and Mammal Survey Data from Prince William Sound, Alaska

This is a child item of the USGS Data Release: https://doi.org/10.5066/F74J0C9Z One table with the results from surveys conducted to document the summer at-sea distribution and abundance of marine birds and mammals in Prince William Sound, Alaska. Surveys followed standard U.S. Fish and Wildlife protocols for strip surveys. Data include: transect ID, date, time, latitude, longitude, record number, data type, animal species, count, behavior, plumage, distance, observers, observer conditions, the altitude of the survey, ice presence, trip ID, Beaufort, transect type, transect width, and comments. Version History: First release: April 2017 Revised: February 2021 (ver. 2.0) Revised: March 2023 (ver. 3.0) Revised:...

Categories: Data; Tags: Alaska, Animals/Vertebrates, Aquatic Biology, Aquatic birds, Aquatic mammals, All tags... Biota, Coastal ecosystems, Ecology, Environment, Fish, Fisheries, Gulf of Alaska, Marine ecosystems, Marine fishery resources, Marine mammals, Oceans, Pelagic habitat, Prince William Sound, Sea ducks, Seabirds, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags