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

机译:印度阿萨姆邦Dhubri的Dhir Beel的淋膜学和肌理学研究

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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.
机译:在Chakrashila Wi1d生命保护区东南边缘Chapar Town附近的Dhubri区的一个重要Beel(拟议的ramsar遗址)的鱼腥藻的当前研究中,发现了71种鱼类,其中包括一些河流鱼类,例如芒果Amblyceps芒果。 ,Tenualosa ilisha,Barilius barila,Bagarisus bagarius等都与布拉马普特拉河相连。浓度参数没有表现出很大的突然变化,空气的平均温度为31.63C,水的温度为28.75C,pH为7.15,电导率为0.13 mS,总溶解固体为107.5 ppm,溶解氧为6.56mg / l,浊度为56.5NTU,总硬度32.25mg / l,游离CO 29.75mg / l,总碱度68.75mg / l和盐度1450ppm。尽管实验研究表明,这些湿地具有相当高的生产潜力,但由于目前的方法,法规和管理体系不利于水体的可持续生产,因此估计的平均产量约为173kg / ha / yr。

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