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The AAPG/Datapages Combined Publications Database
Journal of Sedimentary Research (SEPM)
Abstract
Erosive Activities of Chitons at Aldabra Atoll
John D. Taylor, Kathie Way
ABSTRACT
Chitons, common on tropical limestone shores, use magnetite-capped radula teeth to scrape algae from upon and within the substrate, and at the same time remove quantities of rock debris. A quantitative estimate of the erosive activities of intertidal chitons at Aldabra Atoll shows that 0.023 g/day of rock debris are defecated by each chiton, which amounts to 40.20 g/m2/yr/chiton. This accounts for a 0.017 mm/m2/yr rate oF erosion of the rock surface, which is about 3.4% of the total erosion. Chitons, although effective agents at rock removal, are insufficiently abundant to be a major cause of intertidal erosion at Aldabra.
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