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. 1973 Nov 16;182(4113):715-7.
doi: 10.1126/science.182.4113.715.

Grazing by the Echinoid Diadema antillarum Philippi: Formation of Halos around West Indian Patch Reefs

Grazing by the Echinoid Diadema antillarum Philippi: Formation of Halos around West Indian Patch Reefs

J C Ogden et al. Science. .

Abstract

Between patch reefs and marine grass communities there is normally a zone or "halo" of heavily grazed grass 2 to 10 meters wide. Grazing by the echinoid Diadema antillarum Philippi during nocturnal migrations off the reefs is found to be the major factor in the formation of halos.

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