Biomass production globally close to normal in the Sahelian zone of West Africa Biomass production higher than normal in the southwest of Mauritania, extending to the northern border of Senegal and the central Sahel region and in Burkina Faso. Very low biomass production in the northern limit of the Sahelian belt. Very low biomass production in the Lake Chad basin area. Negative biomass production anomalies along the coastal countries, particularly in Benin. High vulnerability in the northern border of the Sahel.