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Design and Assessment of Climate Change Adaptation and Erosion Control Measures for Mon Choisy Beach, Republic of Mauritius
EP24110
Poster Title: Design and Assessment of Climate Change Adaptation and Erosion Control Measures for Mon Choisy Beach, Republic of Mauritius
Submitted on 16 Jun 2016
Author(s): Jose C. Borrero (1), Majella Clarke (2), Rebecca Klaus (2), Shaw T. Mead (1), Sharveen Persand (3)
Affiliations: (1) eCoast Ltd. P.O. Box 151, Raglan 3225, New Zealand, (2) Indufor Oy, Helsinki, FInland, (3) C.L.A.M.S. Ltd. Port Louis, Mauritius
This poster was presented at 13th International Coral Reef Symposium, Honolulu, Hawaii
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Abstract: Mon Choisy in northwestern Mauritius is an economically important public beach enjoyed by locals and tourists. Chronic erosion has resulted in the loss of up to 20 m of beach width in 40 years and is likely to increase in coming years due to global sea level rise, severely impacting beach amenity and economic viability. In 2014, the Government of Mauritius and UNDP, supported by the Adaptation Fund, initiated a project to analyze the causes of erosion at Mon Choisy and provide rehabilitation options. A comprehensive technical assessment incorporating physical and biological surveys, instrumental data collection and calibrated numerical modeling suggest that the erosion is caused primarily by the interruption of sediment supply from existing coastal works and the degradation of coral and seagrass habitats due to anthropogenic and natural factors, resulting in increased wave energy penetration into the lagoon, sediment mobility and decreased production of coralline sand. Remedial measures proposed include the removal of Casuarina trees, beach reprofiling and replanting with native sand binding and coastal forest species, sand nourishment, low crested breakwaters for wave energy dissipation, seagrass rehabilitation, and the designation of a Voluntary Marine Conservation Area. While these measures may reduce erosion and result in a more resilient beach, they do not address the underlying causes of the erosion, highlighting the need for funding agencies to consider longer term programs with broader reach in order to fully address the threats to coral lagoon beaches.Summary: Climate change adaptation strategies for a lagoon beach in Mauritius.Report abuse »
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