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Studies on Geo-morphology, Ecology and Fish Production of the 92 Rivers of Rajshahi Division, Bangladesh

M.K. Rahman
Bangladesh Fisheries Research Institute (BFRI), Riverine Station, Chand pur 3602, Bangladesh

J.N. Akhter
Bangladesh Fisheries Research Institute (BFRI), Riverine Station, Chand pur 3602, Bangladesh

A. Nima
Bangladesh Fisheries Research Institute (BFRI), Riverine Station, Chand pur 3602, Bangladesh

S.U. Ahmed
Bangladesh Fisheries Research Institute (BFRI), Riverine Station, Chand pur 3602, Bangladesh

M.A. Mazid
Bangladesh Fisheries Research Institute (BFRI), Bangladesh

Abstract/ Executive Summary:

Geo-morphology, ecology and fish production of the 92 rivers of Rajshahi division have been presented in this paper. Fifteen rivers are dead and 11 rivers have severe erosion problem. Siltation has increased in 66 rivers and depth has decreased in 11 rivers. Sixty nine rivers are suffering from low flow conditions. Fish diversity has decreased in 20 rivers while fish production has declined in 75 rivers. A total of 31 fish species have extinct, 25 species are under threat of extinction and 43 species have low production. Siltation and pollution are the major causes of fish habitat loss. Recommendations are made to protect and conserve fish habitat and riverine fisheries of Rajshahi division.

Keywords: River, Geo-morphology, Ecological change

Location: Rajshahi division

Start Date: 00-01-1998

End Date: 00-07-2003

Program Area: Resource Development and Management

Commodity: Fish

Objectives:

To generate data on geo-morphology, ecology and fisheries of the river systems of Rajshahi division,

Methodology:

Information on loss of habitat, fish biodiversity, production and other relevant aspects of study rivers were collected from different sources, especially from different National dailies of the country. Different reports, journals were also explored to get information on fish species diversity, density, siltation, flow condition and other aspects of eco-morphological changes of rivers. This study was conducted between January'98 and July'03.

Source of Information: Bangladesh J. Fish. Res., 7(2), 2003: 141-150

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

A total of 31 fish species have extinct, 25 species are under threat of extinction and 43 species have low production. Siltation and pollution are the major causes of fish habitat loss.

Knowledge Management: Journal