期刊
ITALIAN JOURNAL OF ZOOLOGY
卷 67, 期 3, 页码 287-295出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/11250000009356326
关键词
mollusc; marine protected area; Ustica Island; Mediterranean Sea; photophilic algae; Cystoseira
类别
Very few studies have addressed the effect of protection on macrozoobenthos in marine protected areas, and particularly for sites in the Mediterranean Sea. In the present study, the molluscan assemblages associated with photophilic algal communities of the Marine Reserve of Ustica Island, were investigated. A survey was carried out along transects from 1 tr, 15 m in depth, during the spring of 1996 at three different sites, subjected to different levels of reserve protection. Species richness and number of individuals reflected the level of protection, and both variables were significantly higher in the integral (most heavily protected) part of the reserve compared with the less well protected buffer areas. Species diversity values showed no correlation with the level of protection. The results reported here do not agree with previous findings on the 'reserve effect' involving large-sized macrozoobenthic species. However, the data reported, together with a study on polychaetes from the same study sites, and visual census observations concerning the fish assemblage of the island may support the hypothesis that protection of piscivore and macrocarnivore species within the integral reserve suppresses populations of small-sized microcarnivorous fish species, allowing 'prey-release' of small benthic invertebrates.
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