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LATEST NEWS UPDATES | Damage overstated -Anamitra Anurag Danda

Damage overstated -Anamitra Anurag Danda

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published Published on Aug 25, 2022   modified Modified on Aug 25, 2022

-The Telegraph

Amplifying the capacity of mangroves as bio-shields against extreme events possibly helped Bengal tap into MGNREGA funds

Within weeks of the Indian Ocean tsunami on December 26, 2004, I was watching video clips of the event at the Choto Mollakhali market in the Gosaba block of South 24 Parganas. One message that came through these video clips was that fewer lives were lost where there was coastal vegetation. This positively changed the perception of mangroves in the Sunderbans much more than the National Mangroves Committee, constituted in 1976 to advise the government, did.

In 2005, Estuarine, Coastal and Shelf Science published an article by Kathiresan Kandasamy and Rajendran Narayanasamy reiterating the importance of coastal mangrove vegetation in protecting lives and assets from the fury of tsunamis. On the basis of the differences in per capita mortality between 18 coastal hamlets in Tamil Nadu, they found that mortality was significantly associated with elevation, distance from sea and the area of coastal frontage given to vegetation. This article influenced policy and practice immensely — it has 907 citations on Google Scholar.

In the following year, the journal published another article by Kerr et al. criticising the potential mitigating effect of mangroves on tsunami damage. While they did not argue against vegetation in general mitigating damage from tsunamis, their contention was that overstating the protective capacity of vegetation may lead to a false sense of security and, eventually, when the next wave comes, to a lack of trust in science. This second article has only 143 citations. While mangroves are well-accepted as bio-shields against extreme events, expecting them to provide protection from large tsunamis does seem unrealistic. Nevertheless, mangroves provide rural coastal communities with many valuable goods and services and their protection should be wholeheartedly supported.

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The Telegraph, 25 August, 2022, https://www.telegraphindia.com/opinion/damage-overstated-amplifying-the-capacity-of-mangroves-as-bio-shields-against-extreme-events-possibly-helped-tap-into-mgnrega-funds/cid/1882274


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