**Author details**

Eric Joël Fofiri Nzossié1,2,3\* and Christophe Bring1,3

\*Address all correspondence to: fofiri\_eric@yahoo.fr

1 Department of Geography, University of Ngaoundéré, Cameroon

2 Associate Researcher, UMR 201 "Development & Societies" IRD-IEDES, France

3 The Ministry of Environment, Protection of Nature and Sustainable Development, P.O. Box 320, Yaoundé, Cameroon
