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MAP OF ECOREGIONS OF OREGON
Citation:
Thorson, T., S. A. Bryce, D. A. Lammers, A. J. Woods, J. Kagan, J M. Omernik, D. E. Pater, AND J. A. Comstock. MAP OF ECOREGIONS OF OREGON. USGS, Corvallis, OR, 2003.
Description:
The ecoregions of Oregon have been identified, mapped, and described and provide a geographic structure for environmental resources research, assessment, monitoring, and management. This project is part of a larger effort by the U.S. EPA to create a national, hierarchical ecoregion framework. This ecoregion framework is methodologically consistent with those developed elsewhere by the U.S. EPA and allows biologists and resource managers to share and compare environmental data across political boundaries. The amount of environmental detail that is delineated at different hierarchical levels varies from level I, the broadest grouping, to level IV, the most detailed.
This project refined and subdivided the level III ecological regions of Oregon. It involved researchers from the U.S. EPA National Health and Environmental Effects Research Laboratory (Corvallis, Oregon), U.S. EPA Region X, Oregon Natural Heritage Program, U.S. Department of Agriculture?Forest Service, U.S. Department of Agriculture?Natural Resources Conservation Service, and U.S. Department of the Interior?Geological Survey?Earth Resources Observation Systems Data Center. It will be published as a double-sided, color map/poster by the U.S. Geological Survey and will measure 34 x 44 inches. The poster includes an original 1:1,500,000 scale map that delineates the nine level III ecological regions and 64 level IV ecoregions of Oregon. Each ecoregion is described in accompanying text and tables. Twelve other posters in the ecoregion series have already been published by the USGS and cover seventeen states and parts of two others.
Level IV ecoregion frameworks have been developed by the U.S. EPA for Alabama, Colorado, Delaware, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Massachusetts, Maryland, Mississippi, Missouri, Montana, Nebraska, Nevada, North Carolina, North Dakota, Ohio, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Utah, Virginia, Wisconsin, West Virginia and Washington; other projects are in progress for Arkansas, Texas, and Wyoming.