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Journal of Biological Sciences
Year: 2014  |  Volume: 14  |  Issue: 4  |  Page No.: 276 - 283

Impact of Climate Change Induced Coral Bleaching in the Northern Part of Gulf of Mannar and Palk Bay, Southeast Coast of India

S. Manikandan, S. Ganesapandian, Manoj Singh, M. Anand and A.K. Kumaraguru    

Abstract: Coral reef ecosystem in the Gulf of Mannar and Palk bay have been extensively damaged due to over fishing, sedimentation, dynamite fishing etc. Coral bleaching is an usual phenomena in summer and at extreme case the bleaching response is fatal to the coral. Bottom temperature during the months of April and May 2010 had significant change in both GoM and Palk bay and ranged between 31 to 31.9°C. Massive corals Porites solida, Porites lutea and Favia spp. and branch corals Acropora cytherea, A. intermedia, A. formosa, A. nobilis and Mantipora digitata were affected. Percentage of coral bleaching during April 2010 was 72 and 75% in GoM and Palk bay, further this level increased to 85.1 and 87.2%, respectively. Coral recovery was found during June to August 2010 in GoM and Palk Bay region. The phenomenon of coral bleaching has been taking place periodically all over the world. Therefore, in spite of the odds, the corals will resurge under the sea, which we need to protect and conserve for our benefit.

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