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A Study of the Limnology and Ichthyology of Dhir Beel at Dhubri, Assam, India

Author Affiliations

  • 1Department of Zoology, Goalpara College, Goalpara-783101, Assam, INDIA
  • 2 Department of Zoology, Gauhati University, Gauhati- 781013, Assam, INDIA

Int. Res. J. Biological Sci., Volume 4, Issue (8), Pages 40-48, August,10 (2015)


The present study on the Ichthyofauna of one of the important Beel (proposed ramsar site), in Dhubri district near Chapar Town, at the South-Eastern fringe of Chakrashila Wi1d Life Sanctuary reveals 71 numbers of species of fishes including some riverine fishes like Amblyceps mangois, Tenualosa ilisha, Barilius barila, Bagarius bagarius etc due to the connection with the Brahmaputra river. The limnological parameters did not show much abrupt fluctuation with an average value of temperature of air 31.63C, temperature of water 28.75C, pH 7.15, Conductivity 0.13 mS, Total Dissolved Solids 107.5 ppm, Dissolved Oxygen 6.56mg/l, Turbidity 56.5NTU, Total Hardness 32.25mg/l, Free CO 29.75 mg/l, Total Alkalinity 68.75 mg/l and Salinity 1450ppm. Although experimental studies indicate that these wetlands have a fairly high production potential, but the average estimated production of the beel is around 173kg/ha/yr as the current method, regulations and system of management are not conducive to sustainable production from the water bodies.


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