The absence of buffer land either side of the river is affecting the growth of mangroves too, because cropping prevents freshwater that they need from reaching the mangrove forests. Indiscriminate building of dams, which has become so much a part of India's industrial growth, can cause this fragile ecosystem considerable stress as well, says Malla. He's currently petitioning authorities to allow a small amount of water downstream, to prevent the loss of mangrove cover.

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