Data
Filter Total Items: 254
Parturition Analyses based on GPS Collar Videos from Female Caribou of the Porcupine and Western Arctic Herds Parturition Analyses based on GPS Collar Videos from Female Caribou of the Porcupine and Western Arctic Herds
Adult female caribou from the Porcupine herd (PCH; 2018-2023) and Western Arctic herd (WAH; 2021, 2023) were fitted with GPS video collars (Vertex Plus, Vectronic Aerospace; 9 sec videos every 20-30 min) to assess parturition, neonate survival (birth through 30 June), and antler shedding. We used video data to validate antler- and movement-based methods for estimating reproduction in...
Chemical Composition of Water in Lakes, Ponds, Rivers, and Creeks in Northwest Alaska Chemical Composition of Water in Lakes, Ponds, Rivers, and Creeks in Northwest Alaska
This dataset includes field and laboratory analyses of water samples collected from lakes, ponds, rivers, and streams in northwest Alaska within Cape Krusenstern National Monument, Noatak National Preserve, Kobuk Valley National Park, Gates of the Arctic National Park and Preserve, and Bering Land Bridge National Preserve. At sites across the five national park units, in situ water...
Water Temperature, Tide Height, and PAR Light Measurements from Izembek, National Wildlife Refuge, Alaska Water Temperature, Tide Height, and PAR Light Measurements from Izembek, National Wildlife Refuge, Alaska
Measurements of water temperature, tide height, and photosynthetic light (PAR: photosynthetic active radiation within the 400-700 nanometers wave band) are provided in four tables for monitoring the abundance and distribution of eelgrass in Izembek and Kinzarof lagoons of Izembek National Wildlife Refuge. These environmental parameters are crucial to the health of eelgrass ecosystems...
Data on Exposure of Polar Bears Inhabiting Alaska to Highly Pathogenic H5 Clade 2.3.4.4b and N1 Avian Influenza Viruses Data on Exposure of Polar Bears Inhabiting Alaska to Highly Pathogenic H5 Clade 2.3.4.4b and N1 Avian Influenza Viruses
This dataset describes reactivity of sera collected from polar bears inhabiting Alaska to various influenza A antigens to assess prior exposure to H5 clade 2.3.4.4b highly pathogenic avian influenza viruses (HPAIVs).
Lower Cook Inlet Fish and Invertebrate Community Composition, Distribution, and Density Lower Cook Inlet Fish and Invertebrate Community Composition, Distribution, and Density
This data package includes seven tables with data about the composition, distribution, relative abundance, seasonal availability, energy density, morphometrics, taxonomy, and stable isotope values of benthic fish and invertebrates, as well as oceanographic data within the proposed oil and gas lease sale area in lower Cook Inlet, Alaska.
Inventory of Shorebirds and other Bird Species in Western Alaska including the Seward Peninsula, Nulato Hills, Unalakleet, and Cape Krusenstern National Monument, 1988-2012 Inventory of Shorebirds and other Bird Species in Western Alaska including the Seward Peninsula, Nulato Hills, Unalakleet, and Cape Krusenstern National Monument, 1988-2012
This data release contains tabular data and photographs from avian surveys of shorebird, predator birds, and other bird species in western Alaska between 1988 and 2012. The data package includes seven tables: 1) characteristics of bird survey sites, 2) habitat classification at survey sites, 3) detections of all birds at survey sites, 4) detections and behaviors of shorebirds and...
Feeding Rates Measured in Zoo Polar Bears Feeding Rates Measured in Zoo Polar Bears
This dataset consists of a single table of feeding trial data collected from 18 polar bears at zoos in the United States and Europe. Bears were fed meat on or off bone, fat, and ground meat. The duration of feeding, amount of food consumed, and number of bites taken were recorded.
Feeding Behavior of Polar Bears at Bowhead Whale Remains on Barter Island Feeding Behavior of Polar Bears at Bowhead Whale Remains on Barter Island
This dataset consists of a single table of data collected from video of polar bears feeding at remains of subsistence harvested bowhead whales on Barter Island. The table includes focal observations of individual bears to record the type of whale tissue consumed (blubber, muscle, etc.) and the number of bites taken by bears from food items over periods of 30 seconds to 12 minutes.
Polar Bear Location and Activity Data at Bowhead Whale Remains on the Southern Beaufort Sea Coast Polar Bear Location and Activity Data at Bowhead Whale Remains on the Southern Beaufort Sea Coast
These data contain two tables of summarized activity sensor and location data of 29 polar bears that fed at bowhead whale remains left by subsistence hunters. Remains occurred on Barter and Cross Islands on the northern coast of Alaska. Activity sensor data were collected from 6 bears using tri-axial accelerometers. The data are presented in two tables providing a summary of all...
GPS Tracking Metadata for Caribou (Rangifer tarandus) from the Central Arctic Herd, Alaska, 2015-2021 GPS Tracking Metadata for Caribou (Rangifer tarandus) from the Central Arctic Herd, Alaska, 2015-2021
GPS collar location data were collected as part of a study on migratory, barren-ground caribou (Rangifer tarandus) in the Central Arctic herd of Alaska. Data were collected in collaboration with Alaska Department of Fish and Game (ADFG). Because ADFG has a statute (16.05.815) restricting the public release of specific animal locations for 25 years, we are only providing metadata about...
Data Supporting the Inventory of Montane-nesting Birds in Katmai National Park and Preserve and Lake Clark National Park and Preserve, Alaska Data Supporting the Inventory of Montane-nesting Birds in Katmai National Park and Preserve and Lake Clark National Park and Preserve, Alaska
This data package includes two child items with data from montane-nesting bird surveys in Katmai National Park and Preserve and Lake Clark National Park and Preserve, Alaska during 2004 through 2006. Child Item One: "Data and Photographs from the Inventory of Montane-nesting Birds in Katmai National Park and Preserve and Lake Clark National Park and Preserve, Alaska". The data include (1...
Lake Trout (Salvelinus namaycush) Morphometrics, Mercury Concentrations, Age and Growth, and Food Web Metrics for Lakes in Alaskan National Parks, 2020-2023 Lake Trout (Salvelinus namaycush) Morphometrics, Mercury Concentrations, Age and Growth, and Food Web Metrics for Lakes in Alaskan National Parks, 2020-2023
This data release provides information on lake trout (Salvelinus namaycush) collected from 10 lakes located in Alaska's national parks. The data are in two tables: (1) capture information, (2) morphometric measurements and mercury (Hg) concentrations, and a folder of individual photographs of captured lake trout. Lake trout were collected between September of 2020 and August of 2023 from...