Nelumbo - The Bulletin of the Botanical Survey of India

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The river Hooghly flowing through Calcutta and Howrah has a high degree of pollutants. Present study revealed the sources of pollution with phytoplanktonic abundance in the stream. Samples were collected from 5 sites near Howrah and Calcutta from June 1985 to May 1986. Members of Bluegreen algae, Bacillariophyceae and Chlorophyceae were found during the study. Changes in physicochemical parameters due to pollution were observed. Several parameters were responsible directly and indirectly which occurred in Phytoplankton, population. A correlation between biological examination and chemical examination of river water has been made.
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