Employing “Macroinvertebrate assemblage”, to study the Preliminary biotic integrity of freshwater ecosystem with reference to taxa tolerance values, and, Matrices.

A comparative study of two important habitats of lentic ecosystem with the help of aquatic macroinvertebrate fauna to check the biotic integrity of freshwater ecosystem was carried out. The habitat was divided into Littoral and sub littoral zones. Biotic indices were used to assess the ecosystem drivers, based on the concept that certain taxa of aquatic organisms are sensitive to pollution whereas others are much tolerant. A standardized comparison of the selected habitats was done using Family Biotic Index (FBI) and Diversity indices. In particular it was seen that both pollution tolerant as well as pollution sensitive species were seen catering to the need of further analysis.