251 KEYWORDS ISSN: 0974 - 0376 N Save Nature to Survive : Special issue, Vol. III: www.theecoscan.in AN INTERNATIONAL QUARTERLY JOURNAL OF ENVIRONMENTAL SCIENCES Prof. P. C. Mishra Felicitation Volume Paper presented in National Seminar on Ecology, Environment & Development 25 - 27 January, 2013 organised by Deptt. of Environmental Sciences, Sambalpur University, Sambalpur Guest Editors: S. K. Sahu, S. K. Pattanayak and M. R. Mahananda Susanta Kumar Chakraborty Mangrove Biodiversity Biocomplexity Environmental Variables Ecohydrology Ecorestoration 251 - 265; 2013 INTERACTIONS OF ENVIRONMENTAL VARIABLES DETERMINING THE BIODIVERSITY OF COASTAL-MANGROVE ECOSYSTEM OF WEST BENGAL, INDIA