Sand Mining and its Effect, Causes of Concern for Zooplankton: A Case Study from Kishanganj, Bihar, India

The Mahanadi River and its tributaries namely Dhok Chenga, as like other rivers, serve to be a lifeline for thousands of individuals in the Kishanganj district falling within Purnea sub-division Bihar. rapid escalation development infrastructure state has imposed an elevated demand sand. To meet this demand, activities pertaining sand mining have also escalated throughout country comparatively from past couple decades. report presented herewith was centered on evaluating effect zooplankton at three sites Belwa Ghat (river Donk), Thakurganj Chenga) Arrabari Mahananda) March 2019 2021. observations study reported showed that there substantial increase (p<0.01) turbidity water due increased activities. However, low Ghat. Statistical evaluation confirmed amount species mean Shannon diversity index reference or control were different considerably however except Thus present case made it evident scientifically led decline distribution reduction number zooplanktons Mahananda, Chenga rivers