This data package includes 5 child items with data from 9 female polar bears without dependent young in the southern Beaufort Sea in April 2014-2016. Child Item 1: "Doubly-labeled Water, Deuterium Dilution, Body Mass, and Blood Biochemistry Data from Female Polar Bears (Ursus maritimus) in the Southern Beaufort Sea by the USGS in April 2014-2016" Child Item 2: "Resting Metabolic Rates of a Captive Adult Female Polar Bear (Ursus maritimus) at the San Diego Zoo" Child Item 3: "Behavior Data from Female Polar Bears (Ursus maritimus) Instrumented in the Southern Beaufort Sea with Video Camera Collars by the USGS in April 2014-2016" Child Item 4: "Archival Logger Data from Female Polar Bears (Ursus maritimus) of the Southern Beaufort Sea by the USGS, April 2014-2016" Child Item 5: "GPS Location Data from Female Polar Bears (Ursus maritimus) Instrumented in the Southern Beaufort Sea with Video Camera Collars equipped with Satellite-linked GPS Receivers by the USGS in April 2014-2016"

This data release includes 4 child items with data regarding metabolic rate, body composition, diet, behavior, blood chemistry, stable isotope, tri-axial accelerometer, and GPS locations of polar bears (Ursus maritimus) on land, Western Hudson Bay, Canada, 2019-2022. Child Item 1: "GPS Location Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022" Child Item 2: "Metabolic Rate, Body Composition, and Blood Biochemistry Data from Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022" Child Item 3: "Tri-axial Accelerometer and Temperature Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022" Child Item 4: "Behavior and Diet Data Derived from Video Camera Collars on Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022"

This data release includes 4 child items with data regarding metabolic rate, body composition, diet, behavior, blood chemistry, stable isotope, tri-axial accelerometer, and GPS locations of polar bears (Ursus maritimus) on land, Western Hudson Bay, Canada, 2019-2022. Child Item 1: "GPS Location Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022" Child Item 2: "Metabolic Rate, Body Composition, and Blood Biochemistry Data from Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022" Child Item 3: "Tri-axial Accelerometer and Temperature Data from Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022" Child Item 4: "Behavior and Diet Data Derived from Video Camera Collars on Polar Bears (Ursus maritimus) Instrumented on Land, Western Hudson Bay, Canada, 2019-2022"

This dataset is one table with specific activity measures of deuterium oxide and oxygen-18, body mass, breath oxygen consumption and carbon dioxide emission, and blood biochemistry (blood urea nitrogen and creatinine and serum progesterone) data for 20 polar bears on land near Churchill, Manitoba, Canada in 2019, 2021, and 2022.

This dataset is one table with specific activity measures of deuterium oxide and oxygen-18, body mass, breath oxygen consumption and carbon dioxide emission, and blood biochemistry (blood urea nitrogen and creatinine and serum progesterone) data for 20 polar bears on land near Churchill, Manitoba, Canada in 2019, 2021, and 2022.

This dataset contains measures of oxygen consumption from an adult female polar bear resting in a metabolic chamber.

This dataset contains measures of oxygen consumption from an adult female polar bear resting in a metabolic chamber.

These data represent estimates of den entrance and exit dates for female polar bears in the southern Beaufort and Chukchi Seas based on temperature sensor data obtained from satellite collars. An algorithm described in Olson et al. (2017) was used to determine whether the female entered a den and further analyses using temperature data as described in Olson et al. (2017) were used to assess den entry and emergence dates. The algorithm used identified the denning period as that during which collar temperature remained consistently above a temperature threshold. As such, users of these data should be aware that bear behavior can affect den entrance and exit date. If a bear moves in and out of a den frequently, the algorithm identifies that bear as not denning. Den substrate was determined by examining satellite locations from collars during the identified denning period and classify dens as occurring on landfast ice, pack ice, or land. This data set also includes direct observations of females post-den emergence to ascertain whether or not she was accompanied by cubs as an indicator of reproductive success. The den IDs provided in this data set correspond with those identified in the USGS den catalog (Durner 2010, Durner et al 2020) additional information about the dens in this data set may be found in the catalog.

These data represent estimates of den entrance and exit dates for female polar bears in the southern Beaufort and Chukchi Seas based on temperature sensor data obtained from satellite collars. An algorithm described in Olson et al. (2017) was used to determine whether the female entered a den and further analyses using temperature data as described in Olson et al. (2017) were used to assess den entry and emergence dates. The algorithm used identified the denning period as that during which collar temperature remained consistently above a temperature threshold. As such, users of these data should be aware that bear behavior can affect den entrance and exit date. If a bear moves in and out of a den frequently, the algorithm identifies that bear as not denning. Den substrate was determined by examining satellite locations from collars during the identified denning period and classify dens as occurring on landfast ice, pack ice, or land. This data set also includes direct observations of females post-den emergence to ascertain whether or not she was accompanied by cubs as an indicator of reproductive success. The den IDs provided in this data set correspond with those identified in the USGS den catalog (Durner 2010, Durner et al 2020) additional information about the dens in this data set may be found in the catalog.

This dataset is one table with time-linked behavior data derived from video camera collars on polar bears on land near Churchill, Manitoba, Canada. Eighteen polar bears were equipped with video-camera collars (Vertex Plus collar with camera option, Vectronic Aerospace GmbH, Berlin, Germany) for 19 - 23 days in 2019, 2021, and 2022.