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Dates

Publication Date
Start Date
1986-05
End Date
1991-11

Summary

We conducted a 6-year evaluation of the North Cascades Grizzly Bear Ecosystem (NCGBE) in north-central Washington to determine the suitability of the area to support a viable grizzly bear population. The presence of grizzly bears in the ecosystem was verified through the confirmation of field observations of bears. Of 238 reported observations, 22 were confirmed as grizzly bears and another 82 were rated as high reliability observations. Capture and marking of resident grizzly bears was unsuccessful. We surveyed areas of the ecosystem with self-activated cameras; no grizzly bears were documented using this method. Analysis of bear scats provided a preliminary list of probable grizzly bear foods in the North Cascades.We used Landsat [...]

Contacts

Point of Contact :
William Gaines
Process Contact :
William Gaines
Distributor :
USGS Forest and Rangeland Ecosystem Science Center
Metadata Contact :
Anne Braaten
Originator :
Interagency Grizzly Bear Committee (IGBC)

Attached Files

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fre40265.xml
Original FGDC Metadata

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Purpose

As directed by the IGBC, our evaluation objectives were to:1. Collect, confirm, and record data concerning reports of grizzly bear observations and sign in the NCGBE;2. Evaluate the vegetal components of the NCGBE, documenting the suitability of the area to provide grizzly bear seasonal habitats;3. Produce a map of general vegetation types with an accuracy level of at least 85%;4. Provide a baseline list of probable grizzly bear foods identified in the NCGBE; and5. Collect information concerning the current level of human activities within the NCGBE, including human population centers, livestock allotments, and recreation sites.

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