You searched for: Subject Environment Remove constraint Subject: Environment Subject Ecological regions Remove constraint Subject: Ecological regions Place New Jersey Remove constraint Place: New Jersey Place Delaware Remove constraint Place: Delaware Place Illinois Remove constraint Place: Illinois Place Georgia Remove constraint Place: Georgia Place Colorado Remove constraint Place: Colorado Data type Polygon Remove constraint Data type: Polygon Format Shapefile Remove constraint Format: Shapefile
2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.
2003. United States. Environmental Protection Agency. This polygon shapefile shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of... National Atlas of the United States.