BIODIVERSITY OF SEER STREAM (DISTRICT BILASPUR, H.P.) IN RELATION TO HYDROBIOLOGICAL FACTORSR. Jindal and D. Singh
Hydrobiological studies were made on Seer stream in district Bilaspur (Himachal Pradesh). Three observation sites have been set up on the stream, i.e. Jahu (S1), Ghumarwin (S2) and Balgar (S3) and water samples were analyzed for physico-chemical and biological parameters for one year. Water temperature, water current, dissolved oxygen, turbidity, pH, phosphate and nitrate had played important role in determining the variations in planktonic and benthic fauna of the stream. Phytoplankton dominated the plankton and had more diversity at S3. Nine benthic insect larvae have been recorded from the stream, and these served as bioindicators of pollution. Hydrobiological studies revealed that stream is oligotrophic at S1 & S3, whereas due to anthropogenic disturbance (mining and sewage entry) at S2, it is oligo-mesotrophic.
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