• Dr. Sashi Bhushan Mohapatra

ABSTRACT: An investigation has been conducted to study the plankton composition and abundance in Renuka water reservoir. Plankton constitutes a vital link in the aquatic food chains. Despite their importance as food for fish, quantitative studies on tropical plankton are supposed to be a neglected area of aquatic research. The planktons are sensitive to environmental fluctuation due to their short life cycle and hence the abundance and species composition is an indicator of the quality of water mass in which these are found. Throughout the entire period of study, the physico-chemical parameters of water revealed that reasonable concentration of dissolved oxygen (DO), low concentration of ammonia and optimum range of temperature was observed in Renuka. Distribution and composition of plankton groups varies insignificantly. A balanced proportion of plankton growth was observed in Renuka (phytoplankton 61.7% and zooplankton 38.3%) which presume to promote the growth performance of omnivorous fish. it was observed that phytoplankton group dominated over the zooplankton group in sampling station of Renuka. Appearances of various phytoplankton forms indicate good ecological condition of the water bodies. The dominance of diatom species such as Nitzschia sigma and Melosiragranulata; green algae Ankistrodemusspirilliformis; blue-green algae Anabaena circularis and Oscillatoria limnosashowed that the water body is eutrophic. So, the study is very much important to create educational awareness to the inhabitants of this study area and the general public on the effects of anthropogenic activities in aquatic ecosystems for a sustainable management and healthy productivity.

plankton, composition, abundance, distribution, eutrophic, sustainable management

"STUDY OF PLANKTON COMPOSITION AND ABUNDANCE IN RENUKA WATER RESERVOIR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 8, page no.e308-e316, August-2023, Available :http://www.jetir.org/papers/JETIR2308438.pdf

"STUDY OF PLANKTON COMPOSITION AND ABUNDANCE IN RENUKA WATER RESERVOIR", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 8, page no. ppe308-e316, August-2023, Available at : http://www.jetir.org/papers/JETIR2308438.pdf