Mumbai, Nov. 18 -- Most mangrove species in Mumbai's wetlands will not survive rising sea levels, the Maharashtra forest department has said. The department's warning comes on the heels of a US study that predicted large parts of the island city could be inundated in around 30 years.

The grey mangrove (Avicennia marina), which makes up 95% of Mumbai's mangrove trees, has aerial breathing roots that rise 15cm to 20cm over the soil. The forest department said that rising sea levels could permanently drown the roots, killing the trees.

"The present mangroves species distribution (breathing roots of Avicennia marina) will be under permanent submergence due to the height of its roots, against the current predicted sea-level rise," said N Vasud...