1. Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Republic of Benin
2. Laboratory of Biomathematics and Forest Estimations, Faculty of Agronomic Sciences, University of Abomey-Calavi, Cotonou, Republic of Benin
3. Department of Forest and Wood Science, Stellenbosch University, Stellenbosch, South Africa