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A seagrass meadow dominated by Zostera capricorni Aschers. was intensively grazed by dugongs (Dugong dugon Muller) between November 1992 and January 1993, leaving a bare sand surface. In less than a year densities had returned to pre-grazing levels with shoot densities of around 11,000 m -2 by August 1993. Recovery of the seagrass appears to have been augmented by a high incidence of...