Sand Mining: Environmental Impacts and Selected Case Studies by D. Padmalal

By D. Padmalal

This e-book addresses many of the environmental affects of sand mining from small rivers the issues and recommendations addressed during this booklet are acceptable to all rivers that drain via densely populated tropical coasts present process swift fiscal progress. Many rivers on the earth are enormously being altered to degrees frequently past their normal resilience strength. one of the kinds of human interventions, mining of sand and gravel is the main disastrous one, because the job threatens the very lifestyles of river surroundings. a greater knowing of sand finances is important if the issues of river and coastal environments are to be solved.

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A few studies on biodiversity, ecological structure and functional processes of fishes are highlighted here to reveal the role of sediment characteristics and habitat alteration on fishes population in aquatic ecosystems, especially rivers. The first and foremost reason for using fishes in riverine biodiversity monitoring is that they are enormously diverse, with different species reflecting different environmental conditions (Moyle and Cech 1996). Further, fishes often have a major bearing on the distribution and abundance of other organisms in the waters they inhabit.

The reduction in overbank flooding can reduce supply of organic-rich fine particulates to the floodplain, and could reduce replenishment of water to floodplain wetlands and sloughs and aquifers. Reduction of overbank flooding can also aggravate downstream flooding because of the loss of floodplain water storage. Large scale bed lowering can increase bank height and aggravate bank erosion and tributary stream bed erosion. Drinking water shortage has caused great concern in many parts of southwestern India, as groundwater forms the major drinking water source in the region.

Al. 1992), etc. When channel incision and bed lowering are large, overbank flooding is virtually eliminated (Collins and Dunne 1990). The reduction in overbank flooding can reduce supply of organic-rich fine particulates to the floodplain, and could reduce replenishment of water to floodplain wetlands and sloughs and aquifers. Reduction of overbank flooding can also aggravate downstream flooding because of the loss of floodplain water storage. Large scale bed lowering can increase bank height and aggravate bank erosion and tributary stream bed erosion.

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