Brown bears occupy 43 countries, but are most abundant in Russia, Alaska, and Canada. Alaska accounts for more than 50% of the remaining North American brown bears and has the second largest population worldwide. Brown bears use a broad range of habitats and require large areas free from human threats. For this reason, they are considered an “umbrella species” that confers protection to other co-occurring species with smaller habitat requirements. Human activities pose a threat to the long-term viability of brown bear populations worldwide because of habitat loss and fragmentation and human-caused mortality.
We monitor brown bears in all the Arctic parks specifically to understand:
- Long-term trends in bear abundance and density.
- Trends in bear occupancy.
- Estimated, total annual human-caused mortality within each park.
- Acceptable harvest rates.
- Probability of population decline as a function of total annual mortality.
Contact: William Deacy
Last updated: December 5, 2019