|Level III Ecoregions|
|Source: United States Forest Service|
The USDA Forest Service recently published a revised version of the ecoregions map of North America by Robert G. Bailey in cooperation with The Nature Conservancy and the U.S. Geological Survey. This map shows, at a scale of 1:15,000,000, the division of the continent into a hierarchy of ecosystem regions. The map replaces the now outdated map of North America ecoregions which was issued in 1981 by the U.S. Fish and Wildlife Service. The revised map can be used to address environmental issues that transcend agency, watershed, and political boundaries and borders.
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