Studies on animal populations of the leaves and rhizomes of Posidonia oceanica (L.) Delile on the rocky bottom of Torvaldaliga

The authors present the results of a descriptive and structural analysis of the epiphytic and associated mobile populations of leaves and rhizomes of Posidonia oceanica (L.) Delile, gathered in April and July 1983 at a depth of 4 m at six stations at Torvaldaliga (Civitavecchia, Italy)