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Free Content Sea urchin and fish bioerosion on La Réunion and Moorea reefs

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Abstract:

Sea urchins and scarid fishes were the most important grazers on the two reefs of La Saline on La Réunion Island (Indian Ocean) and of Tiahura on Moorea Island (French Polynesia). The total erosive activity of grazers reached a similar maximum value of 8 kg CaCO3 m−2yr−1 on these two high island reefs. The rates of bioerosion by grazers varied considerably among reef habitats and were linked to the main species of bioeroders. The urchin Echinometra mathaei was the only important grazer on La Réunion reef flats, when on Moorea Diadema savignyi and Echinothrix spp. played an important role on bioerosion on the barrier reef flat, and Chlorurus sordidus (scarid fish) and Echinometra mathaei were very active on the fringing reef.

Document Type: Research Article

Publication date: March 1, 2000

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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