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Coast Range Ecoregion Modeling Document

Region 10 Links

Ecological condition of streams in the Coast Range Ecoregion of Oregon and Washington

Lillian G. Herger and Gretchen Hayslip

U.S. Environmental Protection Agency, Region 10
Office of Environmental Assessment
1200 Sixth Avenue. Seattle, WA 98101. 2000

PDF file
View the report (77 pp, 898 Kb, about PDF)
EPA Region 10 conducted an analysis of the Coast Range Ecoregion of Oregon and Washington EMAP data. Ecoregions are distinct geographic areas based on characteristics of the topography, climate, soils, geology and naturally occurring vegetation. This analysis integrates the EMAP landscape data and surface waters data to identify the key natural factors and human disturbance attributes useful for estimating fish assemblages. The purpose is to determine the extent to which natural gradients and human disturbance factors at a landscape scale account for variation in the Coast Range Ecoregion fish assemblage. The goal of this project is to contribute to the development of indicators of stress by considering metrics that can be influential at the broad scale of the ecoregion.

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