Biodiversity of marine sessile epifauna at an Aegean island subject to hydrothermal activity: Milos, eastern Mediterranean Sea |
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| Authors: | C Morri C N Bianchi S Cocito A Peirano A M De Biase S Aliani M Pansini M Boyer F Ferdeghini M Pestarino P Dando |
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| Institution: | (1) DipTeRis (Zoologia), Università di Genova, via Balbi 5, I-16126 Genova, Italy, IT;(2) Marine Environment Research Centre, ENEA S. Teresa, P.O. Box 316, I-19100 La Spezia, Italy, IT;(3) Centro Interuniversitario di Biologia Marina, piazzale Mascagni 1, I-57127 Livorno, Italy, IT;(4) Istituto per lo studio dell'Oceanografia Fisica, CNR, Forte di Santa Teresa, I-19032 Pozzuolo di Lerici, La Spezia, Italy, IT;(5) Indo-Pacific Divers, P.O. Box 1014, Manado 95010, North Sulawesi, Indonesia, ID;(6) DiBiSAA (Sezione di Neuroendocrinologia e Biologia dello Sviluppo), Università di Genova, viale Benedetto XV 5, I-16132 Genova, Italy, IT;(7) School of Ocean Sciences, University of Wales, Bangor, Menai Bridge, Anglesey LL59 5EY, United Kingdom, GB |
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| Abstract: | Sessile macroepifauna was sampled at six rocky sites between 2 and 90 m depth with a number of different methods involving
both underwater photography and collection of specimens. A total of 212 species (or varieties) were identified, belonging
to seven higher taxa: poriferans (24 species), cnidarians (32), molluscs (8), serpuloidean polychaetes (33), bryozoans (90),
brachiopods (4) and ascidians (21). The combined use of a varied array of sampling methods was effective in obtaining a rich
faunal inventory. Deep and offshore sites tended to be richer in species than shallow and inshore sites. In all cases species
richness was higher at sites closest to hydrothermal vents on the sea floor. Although there are no comparable inventories
of marine sessile epifauna in the Aegean, the high number of species found, with a relatively low sampling effort in a restricted
area, indicates that the marine biodiversity of this sea is not as low as traditionally believed.
Received: 20 January 1999 / Accepted: 25 August 1999 |
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