Generic and Species Diversity of Animal Vegetation Dynamics of Sundarbans Mangrove South Bengal, Laterite Tracts of West Bengal and North Bengal Forests-an Ecological Study

Animal vegetation diversity had been presented in this paper for Sundarban mangroves, South Bengal Laterite Forests and North Bengal Forests. The study gives an indication that mangrove vegetational complex situated below the tidal level was richer in generic and species diversity over other zones which are above the tide level or occasionally inundated. It further reveals that the generic diversity of tree vegetation of Sundarbans mangroves is lower than that of North and South Bengal Forests, but tbe generic diversity of Sundarbans molluscs is, as the paper indicates, more than than that of its tree vegetation, crustaceans, fish and other kinds of faunal organisms. Sundarbans plant-animal complex warrants a warning singnal to guard against ecologically calamitous situation, so does the vegetation complex of laterite tracts of South Bengal.