The biogeographic regionalization of Earth's terrestrial biodiversity, known as Terrestrial Ecoregions of the World (TEOW), is made up of 867 ecoregions that are divided into 14 biomes. In addition to offering a comprehensive map of terrestrial biodiversity, TEOW also provides a global species database for ecological analyses and priority setting, a logical biogeographic framework for large-scale conservation strategies, a map for enhancing biogeographic literacy, and a foundation for the Global 200.
Similarly, another author indicated that there are 14 distinct biomes, including forests, grasslands, and deserts, among the 846 ecoregions that make up the area. Ecoregions vary in size; the island group of St. Peter and St. Paul Rocks in the Atlantic Ocean is only , while the East Siberian Taiga is .
According to the Worldwide Fund for Nature, the following is a list of ecoregions in Nigeria.
Terrestrial ecoregions by major habitat type
Tropical and subtropical moist broadleaf forests
Cameroonian Highlands forests Cross–Niger transition forests Cross–Sanaga–Bioko coastal forests Niger Delta swamp forests Nigerian lowland forests
Tropical and subtropical grasslands, savannas, and shrublands
East Sudanian savanna Guinean forest–savanna mosaic Mandara Plateau mosaic Northern Congolian forest-savanna mosaic Sahelian Acacia savanna West Sudanian savanna
Montane grasslands and shrublands
Jos Plateau forest–grassland mosaic
Flooded grasslands and savannas
Lake Chad flooded savanna
Mangroves
Central African mangroves
Freshwater ecoregions by bioregion
Nilo-Sudan
Bight Coastal Lake Chad Catchment Lower Niger-Benue Niger Delta
West Coastal Equatorial
Northern West Coastal Equatorial
Marine ecoregions Gulf of Guinea Central
References
General references Burgess, Neil, Jennifer D’Amico Hales, Emma Underwood (2004). Terrestrial Ecoregions of Africa and Madagascar: A Conservation Assessment. Island Press, Washington DC. Spalding, Mark D., Helen E. Fox, Gerald R. Allen, Nick Davidson et al. "Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas". Bioscience Vol. 57 No. 7, July/August 2007, pp. 573–583.
Toham, Andre Kamdem et al., eds. (2006). A Vision for Biodiversity Conservation in Central Africa: Biological Priorities for Conservation in the Guinean-Congolian Forest and Freshwater Region. World Wildlife Fund, Washington DC. Page A-52.