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THE EFFECTIVENESS OF MANGROVES IN |
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| Frida Sidik¹ & Hamzah Latief² | |
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¹Agency for Marine and Fisheries Research, Ministry of Marine Affairs
and Fisheries, |
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| This poster aims to investigate wave energy reduction due to coastal mangrove shrubs. Greenbelts of mangroves and/or mangrove associate groups have been known to absorb wave energy. The two case studies were taken in different conditions: (1) coastal erosion caused by long waves and (2) tsunami inundation which consist of drag and impact forces. Hydrodynamic phenomena in mangrove forests and hydraulic resistance due to bottom-boundary roughness and vegetation are also discussed in this paper. The species studied is Rhizophora sp. which is predominant in these sites. The study shows how Rhizophora sp. significantly reduces the wave height and current at the back of the model. The model is a unit control area of mangrove that consists of leaves, trunks and roots. This effect is related to its plant characteristics and the density of the shrub. The results should therefore prove useful in designing greenbelts of suitable densities. | |
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