The time between when polar bears emerge from their den in the spring until they depart the den site is likely an important period for cub development and acclimation to conditions outside the den, but little is known about the duration of this period at dens that have not been impacted by human activities. We are using temperature data from collared bears to estimate the phenology and duration of this post-emergence period and are evaluating how this phenology is influenced by various environmental factors.

Contact Information

man in a hat standing in a hat by a hill
Wildlife Biologist
Alaska Marine Mammals Management Office
Expertise
Impacts of environmental change and anthropogenic actions on wildlife demography,
Harvest management
Area
AK
Anchorage,AK
A close-up of a man with a rocky mountain slope and small plane in the background
Manager/Supervisory Biologist - Polar Bears
Alaska Marine Mammals Management Office
Expertise
Human-wildlife conflict management,
Nutritional, spatial, and habitat ecology of large mammals
+19077863621
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Area
AK
Anchorage,AK

Species

Polar bears

The polar bear (Ursus maritimus) is the largest of the extant bear species and is classified as a marine mammal. Polar bears are protected under the Endangered Species Act and Marine Mammal Protection Act. The Marine Mammal Protection Act prohibits the take, which is defined as...

FWS Focus
Species
Kingdom
Animalia
Taxonomic Rank
Species

Programs

A polar bear has black eyes and nose, and small ears, in a thick pelt of white fur.
We provide leadership in the conservation and management of our nation's marine mammals under our jurisdiction – sea otters, Pacific walruses, polar bears, and West Indian manatees – as well as the marine ecosystems that support them.
Program
Baileys Crossroads,VA
A rocky shoreline of a river. The water is calm. Mist and green branches line the river.
The Ecological Services Program works to restore and protect healthy populations of fish, wildlife, and plants and the environments upon which they depend. Using the best available science, we work with federal, state, Tribal, local, and non-profit stakeholders, as well as private land owners, to...
Program
Baileys Crossroads,VA