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Impact of 2004 co-seismic coastal uplift on the mangrove cover along the North Andaman Islands

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Title Impact of 2004 co-seismic coastal uplift on the mangrove cover along the North Andaman Islands
Not Available
 
Creator Ratheesh Ramakrishnan
Y Gladston
Neethu Lekha Kumar
Preeti Rajput
Rajagopal Mani Murali
Ajay Singh Rajawat
 
Subject Mangrove habitat
Coseismic uplift
2004 Sumatra earthquake
Andaman Islands
 
Description Not Available
The December 2004 earthquake and the subsequent tsunami have incurred devastating impacts on vital habitats along the Indian
coastal region, where few of them are irreversible. The earthquake has uplifted the northern Andaman coast, resulting in a drastic
reduction of tidal water influx into the adjoining mangrove-laden mudflats. Satellite images of the period from 2003 to 2019 were
used to assess the impact of coastal upliftment on the northern Andaman mangroves. Through satellite data analysis, we report a
loss of 6500 ha of northern Andaman mangroves. Tidal hydrodynamics simulation under the post-earthquake scenario showed a
vast area of mudflats deprived of tidal influx. This reduction in the tidal inundation has incurred a gradual and permanent
mangrove area degradation. The earthquake impact on the mangroves was not spontaneous, but a gradual process, where the
mangroves were intact until Mach 2006. The earthquake and the resultant coastal uplift have significantly altered the coastal
geomorphology as well as the plant demography of the study area. Field visit revealed the terrestrial vegetation growth along the
erstwhile mudflats, and vast areas of mangrove peat are observed, surrounded by successions of marshy and terrestrial plants. As
mangroves are preferred habitat for diverse marine and terrestrial organisms and act as a vital food source and juvenile shelters for
various fish species, the extensive loss of mangrove area may adversely affect a large scale biological ecosystem
Not Available
 
Date 2021-07-20T04:30:47Z
2021-07-20T04:30:47Z
2020-02-02
 
Type Journal
 
Identifier Ramakrishnan, R., Gladston, Y., Kumar, N.L., Rajput, P., Murali, R.M. and Rajawat, A.S., 2020. Impact of 2004 co-seismic coastal uplift on the mangrove cover along the North Andaman Islands. Regional Environmental Change, 20(1), pp.1-12.
https://doi.org/10.1007/s10113-020-01608-7
http://krishi.icar.gov.in/jspui/handle/123456789/48969
 
Language English
 
Relation Not Available;
 
Publisher Springer nature