1. School of Biological Sciences; University of Nairobi; Nairobi Kenya
2. Laboratory of Plant Biology and Nature Management Mangrove Management Group; Vrije Universiteit Brussels VUB; Pleinlaan 2 1050 Brussels Belgium
3. Kenya Marine and Fisheries Research Institute; Department of Mangrove Research; Mambasa Kenya
4. Laboratory of Systems Ecology and Resource Management, Département de Biologie des Organismes, Faculté de Science; Université Libre de Bruxelles - ULB CP 169; Avenue F. D. Roosevelt 50 B-1050 Bruxelles Belgium