University of Bonn - Center for Development Research (ZEF), Center for Development Research, African Institute of Mathematical Sciences, Institut des Sciences de l’ Environnement et du Développement Rural, West African Science Services Centre on Climate and Adapted Land Use (WASCAL), Ethiopian Economics Association/Ethiopian Economic Policy Research Institute, affiliation not provided to SSRN, Consultant, Université Abdou Moumouni de Niamey, Université Abdou Moumouni de Niamey, affiliation not provided to SSRN, Ministère de l’environnement, Cabinet du Premier Ministre, University of Ibadan - Centre for Sustainable Development, Senegalese Institute of Agricultural Research, Senegalese Institute of Agricultural Research, Senegalese Institute of Agricultural Research, Université Cheikh Anta Diop (UCAD), Senegalese Institute of Agricultural Research, Senegalese Institute of Agricultural Research, Sudanese Environment Conservation Society, Sudanese Environment Conservation Society, Permanent Interstate Committee for drought control in the Sahel, Center for Development Research (ZEF), University of Bonn, Permanent Interstate Committee for drought control in the Sahel and University of Bonn - Department of Economic and Technological Change