Degree of Threat: A : Very threatened throughout its range communities directly exploited or their composition and structure irreversibly threatened by man-made forces, including exotic species
Comments: Considered extremely threatened due to high sensitivity to sedimentation, eutrophication, disease, bleaching, salinity, and mechanical damage (Davis, 1977; Curtis, 1985).
Davis (1977): extensive anchor damage in Dry Tortugas, Florida. Curtis (1985): damage from vessel groundings in southern Florida
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