Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Polar bears (Ursus maritimus) are one of 4 marine mammal species managed by the U.S. Department of Interior. The USGS Alaska Science Center leads long–term research on polar bears to inform local, state, national and international policy makers regarding conservation of the species and its habitat. Our studies, ongoing since 1985, are focused on population dynamics, health and energetics, distribution and movements, maternal denning, and methods development. The majority of our research focuses on the two polar bear subpopulation’s whose range includes Alaska: the Southern Beaufort Sea subpopulation that ranges between the North Slope of Alaska and western Canada and the Chukchi Sea or Alaska-Chukotka subpopulation that ranges between the northwest coast of Alaska and eastern Russia. The overarching goal of our research is to assess current and projected future responses of polar bears to a rapidly changing Arctic environment.
Return to Ecosystems >> Marine Ecosystems
Video: Polar Bear Collar Cam
Video: About the Polar Bear Research Program
Video: Melting Arctic Sea Ice Threatens Polar Bears
Polar Bear Reseach Projects
Information on the status and trends of polar bear populations are needed to inform management of polar bears under US laws and international agreements.
Population Dynamics
Health and Energetics
Distribution and Movements
Maternal Denning
Below are other science projects associated with this project.
Q&A: Polar Bears and Zoos
Below are data or web applications associated with this project.
Data on the Deterioration of Different Types of Attachment Hardware on Sham Satellite Radio Collars Data on the Deterioration of Different Types of Attachment Hardware on Sham Satellite Radio Collars
Pathogen Exposure Data for Chukchi Sea Polar Bears 1988-1994 and 2008-2017 Pathogen Exposure Data for Chukchi Sea Polar Bears 1988-1994 and 2008-2017
Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016 Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016
Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas
Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis
Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022 Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022
Below are multimedia associated with this project.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Polar bear laying down to dry after a swim in the Chukchi sea.
Polar bear laying down to dry after a swim in the Chukchi sea.
Polar bears spend much of their lives in and around water, and they are well adapted for swimming.
Polar bears spend much of their lives in and around water, and they are well adapted for swimming.
This video was edited and compiled from raw footage recorded by a camera equipped radio collar that was put on a female polar bear in the Beaufort Sea during April 2014 by the US Geological Survey. This new type of camera technology was developed by videographer Adam Ravetch with the support of the World Wildlife Fund.
This video was edited and compiled from raw footage recorded by a camera equipped radio collar that was put on a female polar bear in the Beaufort Sea during April 2014 by the US Geological Survey. This new type of camera technology was developed by videographer Adam Ravetch with the support of the World Wildlife Fund.
Large polar bear being weighed by Anthony Pagano and Todd Atwood
Large polar bear being weighed by Anthony Pagano and Todd AtwoodLarge polar bear being weighed by Anthony Pagano and Todd Atwood
Large polar bear being weighed by Anthony Pagano and Todd Atwood
Large polar bear being weighed by Anthony Pagano and Todd AtwoodLarge polar bear being weighed by Anthony Pagano and Todd Atwood
Spring 2014. USGS scientists conduct a health evaluation of a young male polar bear in the Arctic as part of the annual southern Beaufort Sea population survey. The bear is sedated for approximately an hour while the team records a variety of measurements and collects key biological samples.
Spring 2014. USGS scientists conduct a health evaluation of a young male polar bear in the Arctic as part of the annual southern Beaufort Sea population survey. The bear is sedated for approximately an hour while the team records a variety of measurements and collects key biological samples.
An open water lead in the sea ice with blowing snow
An open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An open water lead in the sea ice with blowing snow
An open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
A landscape of open water lead in the sea ice with blowing snow
A landscape of open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
A landscape of open water lead in the sea ice with blowing snow
A landscape of open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
A polar bear is being subjected to the enhanced sampling protocol for suspected alopecic bears. In the photo, we're using the tape measure to demonstrate the size of the area of hair loss on the neck. This photo was taken on the sea ice north of Utqiagvik, Alaska.
A polar bear is being subjected to the enhanced sampling protocol for suspected alopecic bears. In the photo, we're using the tape measure to demonstrate the size of the area of hair loss on the neck. This photo was taken on the sea ice north of Utqiagvik, Alaska.
Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea, April 8, 2011
George Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bearGeorge Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bearGeorge Durner and Jennifer Wiley working on an anesthetized polar bear
Small pressure ridge in sea ice in the Beaufort Sea
Small pressure ridge in sea ice in the Beaufort SeaA view of a pressure ridge in the sea ice in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Small pressure ridge in sea ice in the Beaufort Sea
Small pressure ridge in sea ice in the Beaufort SeaA view of a pressure ridge in the sea ice in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An adult male polar bear still-hunting at a seal hole on the sea ice of the southern Beaufort Sea.
An adult male polar bear still-hunting at a seal hole on the sea ice of the southern Beaufort Sea.
This image is of a polar bear and their cub.
This image is of a polar bear and their cub.
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
USGS scientist Karyn Rode takes a blood sample from a polar bear to estimate the diets of wild bears.
USGS scientist Karyn Rode takes a blood sample from a polar bear to estimate the diets of wild bears.
Below are publications associated with this project.
Increased pathogen exposure of a marine apex predator over three decades Increased pathogen exposure of a marine apex predator over three decades
Assessing the risk of climate maladaptation for Canadian polar bears Assessing the risk of climate maladaptation for Canadian polar bears
Development of an 8K SNP chip to assess adaptive diversity and hybridization in polar bears Development of an 8K SNP chip to assess adaptive diversity and hybridization in polar bears
Potential impacts of an autumn oil spill on polar bears summering on land in northern Alaska Potential impacts of an autumn oil spill on polar bears summering on land in northern Alaska
The post-emergence period for denning polar bears: Phenology and influence on cub survival The post-emergence period for denning polar bears: Phenology and influence on cub survival
Ursids evolved dietary diversity without major alterations in metabolic rates Ursids evolved dietary diversity without major alterations in metabolic rates
Below are news stories associated with this project.
Below are partners associated with this project.
Polar bears (Ursus maritimus) are one of 4 marine mammal species managed by the U.S. Department of Interior. The USGS Alaska Science Center leads long–term research on polar bears to inform local, state, national and international policy makers regarding conservation of the species and its habitat. Our studies, ongoing since 1985, are focused on population dynamics, health and energetics, distribution and movements, maternal denning, and methods development. The majority of our research focuses on the two polar bear subpopulation’s whose range includes Alaska: the Southern Beaufort Sea subpopulation that ranges between the North Slope of Alaska and western Canada and the Chukchi Sea or Alaska-Chukotka subpopulation that ranges between the northwest coast of Alaska and eastern Russia. The overarching goal of our research is to assess current and projected future responses of polar bears to a rapidly changing Arctic environment.
Return to Ecosystems >> Marine Ecosystems
Video: Polar Bear Collar Cam
Video: About the Polar Bear Research Program
Video: Melting Arctic Sea Ice Threatens Polar Bears
Polar Bear Reseach Projects
Information on the status and trends of polar bear populations are needed to inform management of polar bears under US laws and international agreements.
Population Dynamics
Health and Energetics
Distribution and Movements
Maternal Denning
Below are other science projects associated with this project.
Q&A: Polar Bears and Zoos
Below are data or web applications associated with this project.
Data on the Deterioration of Different Types of Attachment Hardware on Sham Satellite Radio Collars Data on the Deterioration of Different Types of Attachment Hardware on Sham Satellite Radio Collars
Pathogen Exposure Data for Chukchi Sea Polar Bears 1988-1994 and 2008-2017 Pathogen Exposure Data for Chukchi Sea Polar Bears 1988-1994 and 2008-2017
Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016 Southern Beaufort Sea Polar Bear Fatty Acid Data, Spring Samples 2004-2016
Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas Estimated Post-Emergence Period for Denning Polar Bears of the Chukchi and Beaufort Seas
Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis Diet Composition of Southern Beaufort Sea Polar Bears Sampled in Spring from 2004 to 2016 Estimated with Quantitative Fatty Acid Signature Analysis
Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022 Metabolic Rate, Body Composition, Diet, Behavior, Blood Chemistry, Tri-axial Accelerometer, and GPS Locations of Polar Bears (Ursus maritimus) on Land, Western Hudson Bay, Canada, 2019-2022
Below are multimedia associated with this project.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Tatqiq, an adult female polar bear at the San Diego Zoo, wearing an accelerometer collar being used to develop a method to remotely identify wild polar bear behaviors.
Polar bear laying down to dry after a swim in the Chukchi sea.
Polar bear laying down to dry after a swim in the Chukchi sea.
Polar bears spend much of their lives in and around water, and they are well adapted for swimming.
Polar bears spend much of their lives in and around water, and they are well adapted for swimming.
This video was edited and compiled from raw footage recorded by a camera equipped radio collar that was put on a female polar bear in the Beaufort Sea during April 2014 by the US Geological Survey. This new type of camera technology was developed by videographer Adam Ravetch with the support of the World Wildlife Fund.
This video was edited and compiled from raw footage recorded by a camera equipped radio collar that was put on a female polar bear in the Beaufort Sea during April 2014 by the US Geological Survey. This new type of camera technology was developed by videographer Adam Ravetch with the support of the World Wildlife Fund.
Large polar bear being weighed by Anthony Pagano and Todd Atwood
Large polar bear being weighed by Anthony Pagano and Todd AtwoodLarge polar bear being weighed by Anthony Pagano and Todd Atwood
Large polar bear being weighed by Anthony Pagano and Todd Atwood
Large polar bear being weighed by Anthony Pagano and Todd AtwoodLarge polar bear being weighed by Anthony Pagano and Todd Atwood
Spring 2014. USGS scientists conduct a health evaluation of a young male polar bear in the Arctic as part of the annual southern Beaufort Sea population survey. The bear is sedated for approximately an hour while the team records a variety of measurements and collects key biological samples.
Spring 2014. USGS scientists conduct a health evaluation of a young male polar bear in the Arctic as part of the annual southern Beaufort Sea population survey. The bear is sedated for approximately an hour while the team records a variety of measurements and collects key biological samples.
An open water lead in the sea ice with blowing snow
An open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An open water lead in the sea ice with blowing snow
An open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
A landscape of open water lead in the sea ice with blowing snow
A landscape of open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
A landscape of open water lead in the sea ice with blowing snow
A landscape of open water lead in the sea ice with blowing snowAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Open water, sea ice, and pressure ridges in the Beaufort Sea
Open water, sea ice, and pressure ridges in the Beaufort SeaAn aerial view of sea ice with open water from a helicopter in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
A polar bear is being subjected to the enhanced sampling protocol for suspected alopecic bears. In the photo, we're using the tape measure to demonstrate the size of the area of hair loss on the neck. This photo was taken on the sea ice north of Utqiagvik, Alaska.
A polar bear is being subjected to the enhanced sampling protocol for suspected alopecic bears. In the photo, we're using the tape measure to demonstrate the size of the area of hair loss on the neck. This photo was taken on the sea ice north of Utqiagvik, Alaska.
Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea, April 8, 2011
George Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bearGeorge Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bearGeorge Durner and Jennifer Wiley working on an anesthetized polar bear
Small pressure ridge in sea ice in the Beaufort Sea
Small pressure ridge in sea ice in the Beaufort SeaA view of a pressure ridge in the sea ice in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
Small pressure ridge in sea ice in the Beaufort Sea
Small pressure ridge in sea ice in the Beaufort SeaA view of a pressure ridge in the sea ice in the Beaufort Sea. Photo taken during Spring Capture of the Polar Bear project.
An adult male polar bear still-hunting at a seal hole on the sea ice of the southern Beaufort Sea.
An adult male polar bear still-hunting at a seal hole on the sea ice of the southern Beaufort Sea.
This image is of a polar bear and their cub.
This image is of a polar bear and their cub.
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
USGS scientist Karyn Rode takes a blood sample from a polar bear to estimate the diets of wild bears.
USGS scientist Karyn Rode takes a blood sample from a polar bear to estimate the diets of wild bears.
Below are publications associated with this project.
Increased pathogen exposure of a marine apex predator over three decades Increased pathogen exposure of a marine apex predator over three decades
Assessing the risk of climate maladaptation for Canadian polar bears Assessing the risk of climate maladaptation for Canadian polar bears
Development of an 8K SNP chip to assess adaptive diversity and hybridization in polar bears Development of an 8K SNP chip to assess adaptive diversity and hybridization in polar bears
Potential impacts of an autumn oil spill on polar bears summering on land in northern Alaska Potential impacts of an autumn oil spill on polar bears summering on land in northern Alaska
The post-emergence period for denning polar bears: Phenology and influence on cub survival The post-emergence period for denning polar bears: Phenology and influence on cub survival
Ursids evolved dietary diversity without major alterations in metabolic rates Ursids evolved dietary diversity without major alterations in metabolic rates
Below are news stories associated with this project.
Below are partners associated with this project.