List of ecoregions in the United States (WWF)
This is a list of terrestrial ecoregions of the 50 United States, as defined by the World Wildlife Fund:
See also
- List of Ecoregions in the United States (EPA)
References
- Ricketts, Taylor H; Eric Dinerstein; David M. Olson; Colby J. Loucks; et al. (1999). Terrestrial Ecoregions of North America: a Conservation Assessment. Island Press; Washington, DC.
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