11 Facts About Terrestrial ecoregions

Thirdly, most Terrestrial ecoregions contain habitats that differ from their assigned biome.

The WWF Terrestrial ecoregions were developed to aid in biodiversity conservation planning, and place a greater emphasis than the Omernik or Bailey systems on floral and faunal differences between regions.

Terrestrial ecoregions are land ecoregions, as distinct from freshwater and marine ecoregions.

The boundaries of Terrestrial ecoregions are often not as decisive or well recognized, and are subject to greater disagreement.

Forty-three priority marine Terrestrial ecoregions were delineated as part of WWF's Global 200 efforts.

The scheme used to designate and classify marine ecoregions is analogous to that used for terrestrial ecoregions.

Global 200 classification of marine ecoregions is not developed to the same level of detail and comprehensiveness as that of the terrestrial ecoregions; only the priority conservation areas are listed.

The 232 individual marine Terrestrial ecoregions are grouped into 62 marine provinces, which in turn group into 12 marine realms, which represent the broad latitudinal divisions of polar, temperate, and tropical seas, with subdivisions based on ocean basins .

Freshwater ecoregions are distinct from terrestrial ecoregions, which identify biotic communities of the land, and marine ecoregions, which are biotic communities of the oceans.

Map of Freshwater Ecoregions of the World, released in 2008, has 426 Terrestrial ecoregions covering virtually the entire non-marine surface of the earth.

Global 200, a set of Terrestrial ecoregions identified by WWF whose conservation would achieve the goal of saving a broad diversity of the Earth's ecosystems, includes a number of areas highlighted for their freshwater biodiversity values.