Alaska Science Center


USGS Changing Arctic Ecosystems: The effects of declining sea ice on polar bear behaviors and energetic rates

This research serves to identify important foraging habitats for polar bears, provide quantitative data on seasonal foraging rates, and provide the first measures of the energetic costs of swimming in this species; a behavior that is expected to increase as sea ice cover declines in the Arctic.

Abstract


Recent declines in arctic sea ice have been linked to decreases in health, survival, and population size of polar bears. Data on polar bear foraging rates and energy demands are greatly needed to better understand the factors driving these declines. We will measure oxygen consumption rates, identify behaviors, and quantify the energetic costs of those behaviors in captive and wild polar bears. This research will serve to identify important foraging habitats for polar bears, provide quantitative data on seasonal foraging rates, and provide the first measures of the energetic costs of swimming in this species.
Products
Title Type
The seasonal energetic landscape of an apex marine carnivore, the polar bearPublication
Satellite Location and Tri-axial Accelerometer Data from Adult Female Polar Bears (Ursus maritimus) in the Southern Beaufort Sea, April-October 2014Data
Measures of Oxygen Consumption and Stroke Frequency of a Captive Subadult Female Polar Bear (Ursus maritimus) while Resting in Water and Swimming and Diving in a Metabolic Water Flume, Oregon Zoo, 2017Data
Energetic Costs of Locomotion in BearsData
Tri-axial Accelerometer Data of Captive Polar Bears (Ursus maritimus) and Captive Grizzly Bears (Ursus arctos) Resting and Walking on a TreadmillData
Measures of Oxygen Consumption and Kinematics of Captive Polar Bears (Ursus maritimus) and Captive Grizzly Bears (Ursus arctos) while Resting and Walking in a Metabolic ChamberData
Measures of Oxygen Consumption and Kinematics of Captive Polar Bears (Ursus maritimus) and Captive Grizzly Bears (Ursus arctos) while Resting and Walking in a Metabolic ChamberData
Locations Collected 1985-2015 from Female Polar Bears (Ursus maritimus) with Dependent Young Instrumented in the Southern Beaufort Sea with Satellite-linked Transmitters by the USGSData
High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bearPublication
Evaluating methods to assess the body condition of female polar bearsPublication
Bioelectrical Impedance, Deuterium Dilution, Body Mass, and Morphological Measures of Southern Beaufort Sea Female Polar Bears, Spring 2014-2016Data
Resting Metabolic Rates of a Captive Adult Female Polar Bear (Ursus maritimus) at the San Diego ZooData
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 2014-2016Data
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 2014-2016Data
Behavior Data from Female Polar Bears (Ursus maritimus) Instrumented in the Southern Beaufort Sea with Video Camera Collars by the USGS in April 2014-2016Data
Archival Logger Data from Female Polar Bears (Ursus maritimus) of the Southern Beaufort Sea by the USGS, April 2014-2016Data
Metabolic Rate, Body Composition, Foraging Success, Behavior, and GPS Locations of Female Polar Bears (Ursus maritimus), Beaufort Sea, Spring, 2014-2016 and Resting Energetics of an Adult Female Polar BearData
Polar Bear-Sea Ice RelationshipsProject Website

Contacts

Pagano, Anthony , 907-786-7165

Status: completed
Start Year: 2013
End Year: 2018

Project Sites

Location
Beaufort Sea

USGS Mission Area and Program
EcosystemsEnvironments Program

Major Initiatives
USGS - Changing Arctic Ecosystems Initiative

Keywords
Biological Classification > Animals/Vertebrates > Mammals > Carnivores > Bears
Cryosphere > Sea Ice