The mangrove ecosystem in Indian Sundarbans has great role in the estuarine fish production and sustenance of large number of aquatic, amphibious and terrestrial forms of living organisms; this is because an ideal mangrove habitat releases more than 6,000 tons litter (on dry weight basis per hectare per annum) and this huge volume of organic matter after mineralisation or after complete decomposition releases nutrients to the estuarine, in shore and off shore ...