HEOU MALEKI BADJANA1,2,3, JORG HELMSCHROT4,5, WOLFGANG-ALBERT FLUGEL 2, KPERKOUMA WALA3, ABEL AFOUDA1 & KOFFI AKPAGANA3 1 West African Science Service Center on Climate Change and Adapted Land Use, Graduate Research Program of Climate Change and Water Resources, University of Abomey-Calavi, Cotonou, Benin maleki.badj@yahoo.fr 2 Department of Geoinformatics, Hydrology and Modelling, Friedrich-Schiller University of Jena, Germany 3 Laboratory of Botany and Plant Ecology, Faculty of Sciences, University of Lome, Togo 4 Biodiversity, Evolution and Ecology of Plants (BEE), University of Hamburg, Germany 5 Southern African Science Service Centre for Climate Change and Adaptive Land Management (SASSCAL)