Diversity of Benthic Macro invertebrates Fauna of River Narmada at Mandleshwar (M.P.)

Fluctuations in population abundance are called population dynamics. Population dynamics means variety and variability of organisms in the aquatic environment. (Dave, V. 2008). The macro-invertebrates are the most valuable indicators of environmental quality in aquatic ecosystem because of stable mode of life, their convenient size and distinct characters which offers an easy sorting and identification of these organisms (Krishnamoorthi and Sarkar 1979).Macro-I nvertebrates community response to environmental changes are useful in assessing the impact of municipal, industrial and agricultural waste and impact of other land uses on surface water. The macro-invertebrates are highly popular as pollution indicators. (Sharma, S. et al 2008). During the study period 7 species of Oligochaeta, 10 species of insect, 11 species of Gastropoda and 8 species of Pelecypoda were recorded.

Key words : Water Quality, Benthic Macro invertebreates, water quality, pollution indicators