West Sudanian savanna

The West Sudanian savanna is a tropical and subtropical grasslands, savannas and shrublands ecoregion located in the Afrotropic biogeographic realm, covering sub-Saharan Africa and the southern Arabian Peninsula, spanning approximately 1.6 million km². Classified under the WWF ecoregion code AT0722, this region represents a distinct ecological community shaped by its unique combination of climate, geography, and evolutionary history.

Climate and Vegetation

This ecoregion experiences warm year-round with seasonal rainfall and a distinct dry period. The dominant vegetation consists of grasses interspersed with scattered trees and shrubs. These conditions create the foundation for the ecological communities found within the West Sudanian savanna.

Ecological Significance

Savannas support some of the most iconic large mammal assemblages on Earth, including herds of grazers and their predators. Fire and herbivory maintain the open grassland structure. The West Sudanian savanna contributes to the broader biodiversity patterns of the Afrotropic realm.

Geographic Distribution

The West Sudanian savanna extends across Benin, Burkina Faso, Cote d'Ivoire, Gambia, Ghana, Guinea, and 6 other countries. This geographic range places it within the Afrotropic realm, one of the eight major biogeographic divisions of the world.

Notable Species

The West Sudanian savanna supports a range of wildlife, including African Barwood (Pterocarpus erinaceus), African blackwood (Erythrophleum africanum), African Blackwood (Dalbergia melanoxylon), African Breadfruit (Treculia africana), African bristlegrass (Setaria sphacelata), African Celtis (Celtis zenkeri), African Mahogany (Khaya ivorensis), African Mahogany (Khaya grandifoliola), and 42 more species. Among these, 11 species are classified as threatened on the IUCN Red List, underscoring the conservation importance of this ecoregion.

Conservation

Like many tropical and subtropical grasslands, savannas and shrublands ecosystems, the West Sudanian savanna faces threats from overgrazing, agricultural conversion, fire suppression, and desertification. Conservation efforts in this ecoregion focus on habitat preservation, sustainable land management, and protecting corridors that connect fragmented habitat patches.