Abstract
Landsat multispectral scanner (MSS) imagery and a ground-based vegetative inventory were used to develop a map of vegetation for the North Cascades Grizzly Bear Ecosystem (NCGBE). An assessment of the interpreted data showed a 95% accuracy level for the general vegetation types and 92% for detailed vegetation types. Additional data layers were developed in a geographic information system (GIS) to evaluate the availability and distribution of vegetation types on a seasonal basis, assess the impacts of human activities on the habitat, assess ungulate food sources, and estimate the abundance of bear foods in various vegetation types. These technologies proved useful in evaluating the suitability of the ecosystem to support grizzly bears (Ursus arctos horribilis).
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