1. Faculty of Agronomy, University of Parakou, Parakou, Benin
2. Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, USA
3. Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, APK Campus, Johannesburg, South Africa
4. Cirad, UMR EcoFoG (AgroParistech, CNRS, Inra, Université des Antilles, Université de Guyane), Campus Agronomique, Kourou, French Guiana
5. Institut National Polytechnique Félix Houphouët-Boigny, Yamoussoukro, Ivory Coast