Proceedings of the Second Mediterranean Symposium on Marine
Proceedings of the Second Mediterranean Symposium on Marine
Proceedings of the Second Mediterranean Symposium on Marine
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Padina pav<strong>on</strong>ica and Halopteris scoparia species covered <str<strong>on</strong>g>the</str<strong>on</strong>g> open spaces. At stati<strong>on</strong>s<br />
2 and 3 <str<strong>on</strong>g>the</str<strong>on</strong>g> bushy layer was <str<strong>on</strong>g>the</str<strong>on</strong>g> <strong>on</strong>ly important stratum <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> vegetati<strong>on</strong>. In <str<strong>on</strong>g>the</str<strong>on</strong>g>se cases<br />
<str<strong>on</strong>g>the</str<strong>on</strong>g> species Corallina el<strong>on</strong>gata and Ulva rigida were dominant<br />
The number <str<strong>on</strong>g>of</str<strong>on</strong>g> species per sampling ranged from 9 (September ’01 at Site 2) to 29<br />
(March ’99 at Site 5). A statistically significant increase <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> total number <str<strong>on</strong>g>of</str<strong>on</strong>g> species<br />
was noticed from <str<strong>on</strong>g>the</str<strong>on</strong>g> Inner Sar<strong>on</strong>ikos Gulf sampling sites (Site 1, Site 2 and Site 3)<br />
towards <str<strong>on</strong>g>the</str<strong>on</strong>g> Outer Sar<strong>on</strong>ikos and S. Evoikos gulfs (Site 4, Site 5 and Site 6). Minimum<br />
and maximum species numbers were found at Site 2 and 5, respectively (Fig. 3).<br />
Fig. 3: Structural and functi<strong>on</strong>al indices variati<strong>on</strong> in <str<strong>on</strong>g>the</str<strong>on</strong>g> studied stati<strong>on</strong>s. Statistical significant variati<strong>on</strong>s are<br />
marked with **. H’=Shann<strong>on</strong>-Weaver index, J’=Pielou eveness index, EEI=Ecological Evaluati<strong>on</strong> Index.<br />
Coverage values per sampling ranged from 90% (June ’01, Site 6) to 342% (June ’99,<br />
Site 5). Although <str<strong>on</strong>g>the</str<strong>on</strong>g>re is a trend <str<strong>on</strong>g>of</str<strong>on</strong>g> decrease in coverage values from <str<strong>on</strong>g>the</str<strong>on</strong>g> Inner Sar<strong>on</strong>ikos<br />
towards <str<strong>on</strong>g>the</str<strong>on</strong>g> Outer Sar<strong>on</strong>ikos and S. Evoikos gulfs, no statistically significant differences<br />
am<strong>on</strong>g <str<strong>on</strong>g>the</str<strong>on</strong>g> studied sites were found.<br />
The values <str<strong>on</strong>g>of</str<strong>on</strong>g> H’ and J’ presented a similar pattern <str<strong>on</strong>g>of</str<strong>on</strong>g> variati<strong>on</strong>: <str<strong>on</strong>g>the</str<strong>on</strong>g>y are decreasing from<br />
Site 1 towards Site 4, <str<strong>on</strong>g>the</str<strong>on</strong>g>n <str<strong>on</strong>g>the</str<strong>on</strong>g>y are increasing towards Site 5 and finally <str<strong>on</strong>g>the</str<strong>on</strong>g>y decrease<br />
ACTES DU DEUXIEME SYMPOSIUM MEDITERRANEEN SUR LA VEGETATION MARINE (ATHENES, 12-13 DECEMBRE 2003)<br />
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