Demography of Grizzly Bears in Relation to Hunting and Mining Development in Northwestern Alaska
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Cover photo: A sedated grizzly bear (Ursus arctos) allows researchers to make necessary measurements and attach a radio collar.





Study Area


Capturing Bears
Telemetry Relocations
Data Analysis
Satellite Telemetry
Density and Population Estimates
Statistical Tests

Results and Discussion

Reproduction Parameters
Movements and Habitat Use
Den Site Characteristics
Satellite Radiotelemetry
Population Estimates and Density
Assumptions of Mark—Resight Population Estimation
Density Comparisons
Current Status, Survival, and Mortality Among Radio-collared Bears
Assessment of Population Status and Effects of Harvest
Evaluation of Hypotheses



Literature Cited

The National Park Service publishes scientific studies of significant natural resources in units of the National Park System. This research is of scholarly quality and may include any discipline of the biological, physical, or social sciences.

Note: Use of trade names does not imply U.S. Government endorsement of commercial products.

Editorial Staff
Fish and Wildlife Service
Paul A. OplerManaging Editor
Paul A. VohsSubject Editor

National Park Service
Donna L. O'LearyPublications Coordinator
Jerry D. CoxTechnical Publications Editor
Martha W. NicholsEditorial Assistant

Warren B. Ballard1
Alaska Department of Fish and Game
Division of Wildlife Conservation
P.O. Box 1148
Nome, Alaska 99762

Lee Anne Ayres2
National Park Service
P.O. Box 1029
Kotzebue, Alaska 99752

Daniel J. Reed
Alaska Department of Fish and Game
Division of Wildlife Conservation
1300 College Road
Fairbanks, Alaska 99701

Steven G. Fancy3
U.S. Fish and Wildlife Service
Alaska Wildlife Research Center
101 12th Avenue, Box 20
Fairbanks, Alaska 96718

Kathryn E. Roney4
National Park Service
P.O. Box 1029
Kotzebue, Alaska 99752

1Present address: LGL Alaska Research Associates, Inc., 4175 Tudor Centre Drive, Suite 101, Anchorage, Alaska 99508.

2Present address: Alaska Department of Fish and Game, Division of Wildlife Conservation, Box 689, Kotzebue, Alaska 99752.

3Present address: U.S. Fish and Wildlife Service, P.O. Box 44, Hawaii National Park, Hawaii 96718.

4Present address: National Park Service, Channel Islands National Park, 1901 Spinnaker Drive, Ventura, Calif. 93001.

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Last Updated: 08-Oct-2008