This is a list of terrestrial ecoregions as compiled by the World Wildlife Fund (WWF). The WWF identifies terrestrial, freshwater, and marine ecoregions.
The terrestrial scheme divides the Earth's land surface into 8 biogeographic realms, containing 867 smaller ecoregions. Each ecoregion is classified into one of 14 major habitat types, or biomes.
In 2017 the WWF team revised ecosystem names and boundaries in the Arabian Peninsula, drier African regions, and Southeastern United States.[1]
Additional ecoregions for Antarctic Realm are currently being incorporated (based on Terauds et al. 2012). Antarctic Realm - Tundra Biome: 1 North-east Antarctic Peninsula; 2 South Orkney Islands; 3 North-west Antarctic Peninsula; 4 Central south Antarctic Peninsula; 5 Enderby Land; 6 Dronning Maud Land; 7 East Antarctica; 8 North Victoria Land; 9 South Victoria Land; 10 Transantarctic Mountains; 11 Ellsworth Mountains; 12 Marie Byrd Land; 13 Adelie Land; 14 Ellsworth Land; 15 South Antarctic Peninsula.
Terauds, A, SL Chown, F Morgan, HJ Peat, DJ Watts, H Keys, P Convey, DM Bergstrom. 2012. Conservation biogeography of the Antarctic. Diversity and Distributions 1–16. doi:10.1111/j.1472-4642.2012.00925.x
Media related to Maps of WWF ecoregions at Wikimedia Commons