According to WWF, the boundaries of an ecoregion approximate the original extent of the natural communities prior to any major recent disruptions or changes. WWF has identified 867 terrestrial …

Mar 31, 2025 · This ecoregion framework is derived from Omernik (1987) and from mapping done in collaboration with EPA regional offices, other Federal agencies, state resource management …

Oct 19, 2019 · The Central Appalachians ecoregion has almost three times the number of change polygons as the Northern Lakes and Forests ecoregion, but those polygons cover only about half as …

Whereas state boundaries were created by people, the ecoregion boundaries on this map were created by Mother Nature. Ecoregions are areas that have similar climate, geology, and soils.

Nov 2, 2025 · An ecoregion is an area of the planet which is defined by both its ecology and geography in terms of natural ecosystems and size. Earth is rich in biodiversity, but different parts of Earth have …

Jul 6, 2025 · An ecoregion is a relatively large area of land or water that contains geographically distinct assemblages of natural communities and species. These regions share similar environmental …

The ecoregions can be explored through an interactive web application developed by RESOLVE and Google Earth Engine, with detailed ecoregion profiles provided by One Earth.

An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm.

The term ecoregion, as used in this article, refers to “natural” ecological systems, or terrestrial and aquatic areas as they were when Europeans first arrived in the New World.

Two prominent methodologies are the World Wildlife Fund’s (WWF) ecoregion classifications and the ecological regions identified by international conservation organizations.