Black Bear Management and Research
Publications & Reports
Management
Much of the information on black bears is acquired from hunters through the sealing process, where hunters bring hides and skulls in for inspection and sealing and provide information on the harvest. Skull size data are an indicator of some change in the population or in hunter effort.
The tendency for black bears to take advantage of human food or garbage as alternative foods has been the greatest management problem within the Juneau area. ADF&G provides the public with bear information and proper waste disposal and has been working to teach the public how to reduce attractions for bears.
West Side of Cook Inlet (GMU 16): The management goal is to provide the greatest opportunity to participate in hunting black bears and to reduce the overall population of black bears in the unit in order to increase moose calf survival.
In the 20-mile radius of McGrath (in Unit 19D East), predator population manipulations and other management actions are being tested, including capture and removal of black bears, in order to provide more moose for subsistence needs. The management objective is to maintain reported harvest of at least 30 black bears in Unit 19D East as part of the intensive management program.
A DNA-based mark–recapture estimate technique was recently completed in the Fortymile, Charley, and Ladue River drainages (GMU 20E).
Research
In some areas, tetracycline biomarking and noninvasive DNA sampling is being used as means of estimating black bear populations. DNA-based mark-recapture population estimates using barbed wire bear hair traps with scent lures have been implemented in a few areas.
In the Upper Tanana and White River drainages blueberry abundance has been monitored at five permanent blueberry sample areas to compare berry production between years and sites, and to evaluate effects of berry abundance on bear harvest and problem bear incidents. A DNA-based mark–recapture population estimate using barbed wire bear hair traps with scent lures was conducted in 2006.
Biologists would like to know more about Alaska’s black bears. Research is needed to identify possible correlations between sealing data and population trends. A better understanding of the short- and long-term impacts of clearcut logging on black bear populations is needed. Some estimate of black bear mortality as a result of wounding loss is needed.
Interactive Maps
Additional Research Projects
- Grizzly and Black Bear Distribution and Abundance Relative to the 2004 Wildfires in Eastern Interior Alaska: Possible Intensive Management Consequences
- Grizzly bear use of the North Slope oilfields and surrounding region
- Population demographics of Kenai brown bears
Project Information
Population demographics of Kenai brown bears
Project 4.38, Federal Aid in Wildlife Restoration Grant Project. Duration: July 1, 2008–June 30, 2013. Principal Investigator: Sean Farley, Anchorage.
The population of Kenai Peninsula brown bears (Ursus arctos) is affected by sport harvest, poaching, defense of life or property actions (DLP), and negative interactions on salmon streams with fisherman. Management of the Kenai population has long been based on a population estimate derived from a habitat based model, rather than from a true census. The logistical and fiscal costs of a scientifically valid population census exceed the conservation value of such a population estimate. Nevertheless, managers still require information pertinent to population structure and health in order to make informed decisions. In lieu of conducting a population census, this project proposes to assess population trend through the collection of demographic information. The PI will develop a measure of population trajectory (lambda) to improve our understanding of general trends within the Kenai brown bear population. This will enable managers to make better informed decisions on harvest regimes.