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Effect of Pollutional Load on Fish Faunal Diversity of Nabaganga River at Jhenidah District in Bangladesh

Author(s):

Bidhan Chandra Biswas , Deparement of Zoology,University of Kalyani,W.B. India.; Ashis Kumar Panigrahi, Department of Zoology,University of Kalyani,W.B. INDIA

Keywords:

Fish diversity, Nabaganga River, water quality, Pollution, Jhenidah.

Abstract

Jhenidah is an important district situated in southwestern part of Bangladesh. A large number of rivers are passing through the district and Nabaganga is a major river in Jhenidah. The river has a vital role in sociological, economical and environmental aspects. Most of the urban settlements are lie on the bank of the river and the inhabitants of the riverside areas are largely depending on the productivity of the river. But recently river ecosystem is badly degraded by anthropogenic activities over the two or three decades. The river received large amount of domestic and agricultural wastes, industrial waste, resulting the degradation of water quality affected directly the productivity of the ecosystem. Jute retting is another cause of water quality degradation. excess use of fertilizer and pesticides in agricultural field in order to cope up the crop yield mainly in irrigation and vegetable cultivation ultimately find its destination in natural water like rivers and lakes increase the nutrient concentration ,heavy metal infestation in aquatic environment. Excessive nutrients in water causes the overgrowth of plankton and aquatic plants causes the depletion of oxygen in water responsible for fish kills. Attempts were made to deal with the availability of fishes and to assess the negative impact of pollutants on aquatic ecosystem.

Other Details

Paper ID: IJSRDV2I5392
Published in: Volume : 2, Issue : 5
Publication Date: 01/08/2014
Page(s): 852-855

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