Journal
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE
Volume 27, Issue 4, Pages 397-403Publisher
WILEY
DOI: 10.1111/j.1439-0485.2006.00099.x
Keywords
epiphytes; Mediterranean Sea; Posidonia oceanica; Sicily; small islands; spatial variability
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This paper investigates patterns of variability in epiphytes of Posidonia oceanica leaves at various spatial scales around Sicily, including geographical differences among the Mediterranean basins, differences between the small islands and mainland, and the variability among and within replicated meadows in each of the previous conditions. Data on percentage cover of the most common epiphytic organisms were analysed by univariate techniques. Encrusting red algae, encrusting brown algae, filamentous algae, encrusting bryozoans, erect bryozoans, hydroids and Foraminifera were the most abundant taxa. Significant differences in the abundance of taxa were detected among geographical regions, while no significant differences were found between the islands and mainland. At smaller scales, variability was concentrated mostly among leaves 100s of centimetres apart and among meadows a few kilometres apart. These results suggest that both geographical and local processes are important in structuring the epiphytes of P. oceanica leaves in this area of the Mediterranean.
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