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Old 08-09-2009, 02:40 PM   #1
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bear Monitoring Bear Populations with Non-Invasive Sampling 2009 - 2013

Monitoring Bear Populations with Non-Invasive Sampling 2009 - 2013

Monitoring Bear Populations with Non-Invasive Sampling 2009 - 2013 | Northern Rocky Mountain Science Center (NOROCK)
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Objectives

* Evaluate the efficacy of monitoring grizzly and black bear population trends using noninvasive hair sampling at a landscape scale.

* Estimate population: (1) growth rate, (2) abundance, (3) distribution and relative density, (4) gene flow and genetic structure, and (5) apparent survival rates.

* Provide area-specific information on bear population status.
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Old 08-09-2009, 02:51 PM   #2
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Background

Grizzly bears (Ursus arctos horribilis) once roamed most of the North American continent. Habitat destruction and direct conflicts with humans have reduced their range by 99% in the lower 48 states (right, click on map for larger version). In 1975, all grizzly bears south of Canada were listed as threatened under the Endangered Species Act. The Northern Continental Divide Ecosystem (NCDE) in northwest Montana is one of six recovery zones defined in the Grizzly Bear Recovery Plan (U.S. Fish and Wildlife Service 1993). The NCDE is the third largest in area, harbors the greatest number of grizzly bears, and is the only zone contiguous to a strong Canadian population. For these reasons it may have the best prospect of long-term survival in the contiguous (48) states. For more information about grizzly bear recovery, visit the U.S. F&WS Grizzly Bear Recovery Office webpage.
US Fish and Wildlife Service Grizzly Bear Recovery Program
http://www.cfc.umt.edu/GrizzlyBearRecovery/index.htm
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