1. Institute for Development, Ecology, Conservation and Cooperation Rome Italy
2. Department of Animal and Environmental Biology Rivers State University Port Harcourt Nigeria
3. Laboratoire d'Ecologie et d'Ecotoxicologie, Faculté Des Sciences Université de Lomé Lomé Togo
4. Department of Natural Sciences, School of Science and the Environment Manchester Metropolitan University Manchester UK
5. Center for International Forestry Research (CIFOR) Bogor Indonesia