Biodiversity and conservation status of Chalan Beel in northern Bangladesh: A study
Md. Hashibur Rahman, Al-Amin, Sharmin Sultana Mukti, Asma Jaman
The status of Chalan beel and prospects for species conservation was taken into consideration for the assessment of the existing fishery resources focusing on existing ecological diversity. Instead of considerable degradation, it still supports an immense and diversified ichthyofauna of major importance to the local economy and people’s livelihoods. The area incorporates about 21 rivers and 93 smaller seasonal beels of asymmetric size. As a result of agricultural encroachment, siltation and other anthropogenic activities most of the rivers and beels are at risk of partial declination. At least 19 fish species which once considered as abundant can now be classified as threatened with a possibility of local extinction. Commercially important indigenous fish species which were once available in large volumes are severely depleted and currently under threat from the study area. Several management strategies were suggested by the stakeholders, and the findings are discussed in the context of overall developments in the Chalan beel fisheries related to habitat and biodiversity management. Twenty-three (23) families under nine (09) different orders were documented from the study site. The Cypriniformes and cyprinidae were the richest order and family which consisting 45% and 39%, respectively. In study area, twelve common groups were enlisted during the reporting period. The number of threatened species were 26 (31%) among which the number of Vulnerable, Endangered and Critically Endangered were 12 (14%), 12 (14%) and 2 (3%) respectively. A significant and operative step should be taken to conserve the threatened species from the further extinction. The aim of the study was to reveal the present status of fish biodiversity to conserve the existing resources. The findings from the study also discusses the management strategies to be implemented for the conservation of freshwater fish diversity through conservation of habitat and conservation of fish stocks using the existing resource as a sanctuary.
Md. Hashibur Rahman, Al-Amin, Sharmin Sultana Mukti, Asma Jaman. Biodiversity and conservation status of Chalan Beel in northern Bangladesh: A study. International Journal of Fisheries and Aquatic Research, Volume 7, Issue 2, 2022, Pages 30-38