Abstract
Abstract. During 1986 and 1987 a decapod crustacean taxocoenosis of Posidonia oceanica beds from the southeast of Spain has been studied.Data on abundance‐dominance of the 50 species found and other information such as reproduction and the selective use of gastropod shells by the dominant hermit crabs arc given.Differences in richness and cquitability between shallow (3–4 m) and deeper (5–7 m) samples arc also shown.The taxocoenosis presents a geometrical distribution in which only 9 species have a relative abundance higher than 1 % and in which the structure is basically controlled by the two dominant hermit crabs, Cestopagitius limidus and Calcium tubularis, and hydrodynamic conditions.
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