PRESENT ECOLOGICAL STATUS AT ESTUARINE ECOSYSTEM OF SUNDARBANS AND DIGHA IN RELATION TO FISH CATCHDebabrata Mukherjee Archit Banarjee and G. K. Sen
In the recent years due to the rapid industrialization and urbanization of the surroundings the estuarine ecosystem of Sundarbans and Digha is facing a changing pattern of aquatic environment. Some physicochemical parameters like, salinity, pH, DO has been detected as in a sharp changing pattern and thus affecting the estuarine ecosystem in greater course. This changing physico-chemical condition of water is also affecting the fish catch, especially in the case of edible fishes like, Hilsa (Tenulosa ihsha). The winter bag- net fishing is also effected with this condition. Among the different parameters pH and . salinity are the two prime factors found here in affecting the annual fish catch. Level of heavy metals is important parameter to judge the fish health here.
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