Ecoregions are defined by the World Wide Fund for Nature as "relatively large units of land or water containing a distinct assemblage of natural communities and species, with boundaries that approximate the original extent of natural communities prior to major land-use change".
This category has the following 19 subcategories, out of 19 total.
The following 35 pages are in this category, out of 35 total. This list may not reflect recent changes.