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; 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

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

Brown Bear Phenotypic Plasticity, Alaska, 2013-2016

These data are the data for age, skull size, body length, and lean mass for Gates of the Arctic, Lake Clark, Kodiak, and Katmai, Alaska, 2013-2016.

Categories: Data; Tags: Age, Age composition, Age structure, Alaska, Biota, All tags... Gates of the Arctic National Park Alaska, Growth, Katmai National Park Alaska, Kodiak National Wildlife Refuge Alaska, Lake Clark National Park, Phenology, Population and community ecology, Population structure, animals, animals, bears, carnivores, mammals, mammals, vertebrates, Fewer tags

Macroinvertebrates From Streams and Springs in the 1002 Region of the Arctic National Wildlife Refuge, Alaska, 2021

This dataset includes tables related to macroinvertebrate collections in streams and springs of the 1002 region of the Arctic National Wildlife Refuge in northeastern Alaska. Macroinvertebrates were collected using kicknets and driftnets in April and August with the goal of comparing populations to those sampled from the same water bodies by the USGS in the 1970s.

Categories: Data; Tags: 1002 Area, ANWR, Age composition, Alaska, Animals/Invertebrates, All tags... Animals/Invertebrates, Aquatic Biology, Aquatic ecosystems, Arctic National Wildlife Refuge, Arthropods, Arthropods, Biota, Community ecology, Environment, Freshwater ecosystems, InlandWaters, Macroinvertebrates, North Slope, USGS Science Data Catalog (SDC), Fewer tags

Child Item 03: Forage Fish Size, Age, and Energy Density 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 age, length, weight, dry mass energy density, and dry mass of forage fish (Pacific sand lance and capelin) captured in July 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: Age composition, Alaska, Animals/Vertebrates, Aquatic Biology, Bioenergetics, All tags... Biota, Calorimetry, Capelin, Coastal ecosystems, Ecology, Environment, Fish, Fisheries, Food web, Forage fish, Gulf of Alaska, Marine ecosystems, Marine fishery resources, Oceans, Pacific Sand Lance, Pelagic habitat, Prince William Sound, Sandlance, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags