You searched for: Access Public Remove constraint Access: Public Subject Environment Remove constraint Subject: Environment Subject Biotic communities Remove constraint Subject: Biotic communities Place New Jersey Remove constraint Place: New Jersey Place Delaware Remove constraint Place: Delaware Place Alabama Remove constraint Place: Alabama Place Illinois Remove constraint Place: Illinois Place Alaska Remove constraint Place: Alaska Data type Polygon Remove constraint Data type: Polygon
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.