Scientia Marina, Vol 78, No 3 (2014)

Mobile epifaunal assemblages associated with Cystoseira beds: comparison between areas invaded and not invaded by Lophocladia lallemandii

Roberto Bedini
Istituto di Biologia ed Ecologia Marina , Italy

Lisa Bonechi
Istituto di Biologia ed Ecologia Marina , Italy

Luigi Piazzi
Istituto di Biologia ed Ecologia Marina , Italy


The study compared the structure of mobile epifaunal assemblages associated with Mediterranean Cystoseira beds between areas invaded and not invaded by Lophocladia lallemandii. A total of 150 taxa were identified: 42 Polychaeta, 78 Arthropoda, 26 Mollusca and 4 Echinodermata. Epifaunal assemblages differed between areas invaded and not invaded by Lophocladia lallemandii when the invasive species reached maximum values of cover and biomass, while differences between conditions were not significant in other periods of the year. The main differences were the greater abundance of amphipods, isopods and polychaetes in invaded areas and the greater abundance of molluscs and decapods in non-invaded areas, while richness and total abundance of organisms were not significantly different between conditions. The effects of Lophocladia lallemandii invasion on Cystoseira-associated assemblages seem to be limited to the period of vegetative growth of the alga and reversible during the period of its vegetative rest.


biological invasions; Cystoseira crinita; Lophocladia lallemandii; Mediterranean Sea; mobile epifauna

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