Skip Links

USGS - science for a changing world

Fact Sheet 2010–3054

Noninvasive Methods for Monitoring Bear Population Trends

By Katherine C. Kendall

Thumbnail of and link to report PDF (5.66 MB)

The U.S. Geological Survey began a grizzly bear research project in 2009 in the Northern Continental Divide Ecosystem (NCDE) of northwestern Montana. This work uses hair collection and DNA analysis methods similar to those used in the 2004 Northern Divide Grizzly Bear Project. However, instead of producing a snapshot of population size, the objectives of this new work are to estimate population growth rates by collecting hair at natural bear rubs along trails, roads, and fence and power lines. This approach holds promise of providing reliable estimates of population trends in an efficient, cost-effective, and unobtrusive way.

First posted September 13, 2010

For additional information contact:

Director, Northern Rocky Mountain Science Center (NOROCK)
2327 University Way, Suite 2
Bozeman, MT 59715

http://nrmsc.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Kendall, K.C., 2010, Noninvasive methods for monitoring bear population trends: U.S. Geological Survey Fact Sheet 2010–3054, 2 p.


Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/fs/2010/3054/index.html
Page Contact Information: USGS Publications Team
Page Last Modified: Wednesday, January 09 2013, 07:17:19 PM