Nicobar Islands rainforests

This ecoregion represents the cluster of Nicobar Islands, considered volcanic in origin, and floristically more similar to flora of Malaysia-Indonesia than to the Andamans. The tropical climate has temperatures ranging from 24ºC to 31ºC with 80% humidity. The southwest monsoon brings 3,000–3,800 mm of rainfall, with frequent cyclones and thunderstorms. The only perennial rivers are found on the largest island, the 1,044 km² Great Nicobar Island. The forest trees include Pterocarpus dalbergioides, Dipterocarpus spp., Terminalia procera, T. bialata, T. manni, Diospyros marmorata, Sageraea elliptica, and Artocarpus chaplasha. The 27 km² of mangroves consist of Rhizophora mucronata, Bruguiera conjugata, Avicennia officinalis, Ceriops tagal, and Excoecaria spp. Island-interior grasslands, possibly anthropogenic, have Imperata cylindrica, Saccharum spontaneum, and Chrysopogon aciculatus.

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