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Long-term assessment of an innovative mangrove rehabilitation project: case study on Carey Island, Malaysia.

Motamedi S, Hashim R, Zakaria R, Song KI, Sofawi B - ScientificWorldJournal (2014)

Bottom Line: Further, a large number of mangrove seedlings were planted using different techniques.The nutrient concentration, the pH value, and the salinity index demonstrate that the site is conducive in establishing mangrove seedlings.As a result, we conclude that the site is now ready for attempts to rehabilitate the lost mangrove forest.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.

ABSTRACT
Wave energy and storm surges threaten coastal ecology and nearshore infrastructures. Although coastal structures are conventionally constructed to dampen the wave energy, they introduce tremendous damage to the ecology of the coast. To minimize environmental impact, ecofriendly coastal protection schemes should be introduced. In this paper, we discuss an example of an innovative mangrove rehabilitation attempt to restore the endangered mangroves on Carey Island, Malaysia. A submerged detached breakwater system was constructed to dampen the energy of wave and trap the sediments behind the structure. Further, a large number of mangrove seedlings were planted using different techniques. Further, we assess the possibility of success for a future mangrove rehabilitation project at the site in the context of sedimentology, bathymetry, and hydrogeochemistry. The assessment showed an increase in the amount of silt and clay, and the seabed was noticeably elevated. The nutrient concentration, the pH value, and the salinity index demonstrate that the site is conducive in establishing mangrove seedlings. As a result, we conclude that the site is now ready for attempts to rehabilitate the lost mangrove forest.

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The schematic view of Carey Island after mangrove rehabilitation project in 2008.
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fig3: The schematic view of Carey Island after mangrove rehabilitation project in 2008.

Mentions: The university directed construction of a detached breakwater system composed of a submerged breakwater with three segments separated by 2.5 m to allow for water circulation. Hashim et al. [20] reported that the average crest height of the breakwater system is 1.8 m above MSL. Furthermore, the system occupies nearly 60 m of the shore at the site. The system is approximately perpendicular to the coastline. The authors also presented detailed information on the breakwater design and described its implementation. Figure 3 illustrates the geographic position of the deforested area and the existing mangrove forest before the breakwater system was constructed in 2008. The figure also depicts the breakwater system and the dike after construction was completed.


Long-term assessment of an innovative mangrove rehabilitation project: case study on Carey Island, Malaysia.

Motamedi S, Hashim R, Zakaria R, Song KI, Sofawi B - ScientificWorldJournal (2014)

The schematic view of Carey Island after mangrove rehabilitation project in 2008.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4109262&req=5

fig3: The schematic view of Carey Island after mangrove rehabilitation project in 2008.
Mentions: The university directed construction of a detached breakwater system composed of a submerged breakwater with three segments separated by 2.5 m to allow for water circulation. Hashim et al. [20] reported that the average crest height of the breakwater system is 1.8 m above MSL. Furthermore, the system occupies nearly 60 m of the shore at the site. The system is approximately perpendicular to the coastline. The authors also presented detailed information on the breakwater design and described its implementation. Figure 3 illustrates the geographic position of the deforested area and the existing mangrove forest before the breakwater system was constructed in 2008. The figure also depicts the breakwater system and the dike after construction was completed.

Bottom Line: Further, a large number of mangrove seedlings were planted using different techniques.The nutrient concentration, the pH value, and the salinity index demonstrate that the site is conducive in establishing mangrove seedlings.As a result, we conclude that the site is now ready for attempts to rehabilitate the lost mangrove forest.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.

ABSTRACT
Wave energy and storm surges threaten coastal ecology and nearshore infrastructures. Although coastal structures are conventionally constructed to dampen the wave energy, they introduce tremendous damage to the ecology of the coast. To minimize environmental impact, ecofriendly coastal protection schemes should be introduced. In this paper, we discuss an example of an innovative mangrove rehabilitation attempt to restore the endangered mangroves on Carey Island, Malaysia. A submerged detached breakwater system was constructed to dampen the energy of wave and trap the sediments behind the structure. Further, a large number of mangrove seedlings were planted using different techniques. Further, we assess the possibility of success for a future mangrove rehabilitation project at the site in the context of sedimentology, bathymetry, and hydrogeochemistry. The assessment showed an increase in the amount of silt and clay, and the seabed was noticeably elevated. The nutrient concentration, the pH value, and the salinity index demonstrate that the site is conducive in establishing mangrove seedlings. As a result, we conclude that the site is now ready for attempts to rehabilitate the lost mangrove forest.

Show MeSH
Related in: MedlinePlus