Comparatively, lentic systems with its species composition and community structure of phytoplankton in lotic systems are not much focused on (Basu and Pick, 1996; Piirsoo et al., 2008). Species diversity in ecosystem was found to be directly related to abundance or equitability (Odum, 1983). The plankton in the ecosystem is useful as bioindicators for assessment of pollution status.
Taking account of literature and carried work, we have decided to assess planktonic diversity from river Krishna (Sangli) in terms of taxonomic richness and density which would help in understanding diversity indices of biological community. Obtained data was comparatively discussed in relation to pollution status of river Krishna. The present investigation was conducted to analyze plankton diversity mass from Krishna River, Sangli which shows level of contamination in the aquatic bodies under study.