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Abstract
Statistic analyses of a population of Diadema antillarum P. during February, May and September, 1977 in a coral reef at Puerto Vargas, southeastern Costa Rica suggest that individuals of D. antillarum are not randomly distributed, but show a contagious distribution. The distribution is positively correlated with substrates of live coral. In addition, a patchy distribution that changes daily with regard to the type and degree of aggregation was observed.References
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Copyright (c) 1978 Revista de Biología Tropical