Abstract
Macrozoobenthos are the best indicators of the stress in the aquatic ecosystem. Distribution of macrozoobenthos is determined by a number of factors such as physical nature of the substratum, depth, nutritive content of the water body. Present study was conducted to assess the diversity of macrozoobenthos of Sai River, Raebareli, Uttar Pradesh during July 2020 to June 2021. During the present investigation, a total number of 24genera of macrozoobenthic fauna were recorded from one year of investigation. Observations revealed that phylum Mollusca acquires dominant position with 45.83% of total faunal composition while phylum Annelida constitutes 29.16% and comes on second position whereas, least faunal abundance was found from phylum Arthropoda which contributes about 25%.
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