“…For the quantitative analysis all the available data, derived from quantitative or semi-quantitative studies (KOCATAŞ, 1978;KOUKOURAS et al, 1985KOUKOURAS et al, , 1996KOUKOURAS et al, , 1998VOULTSIADOU-KOUKOURA et al, 1987;CHINTIROGLOU & KOUKOURAS, 1992;TOPALOGLU & KIHARA, 1993;SIMBOU-RA et al, 1995;CHINTIROGLOU, 1996;ERGEN & ÇINAR, 1997;BAXEVANIS & CHINTIROGLOU, 2000;DAMIANIDIS & CHINTIROGLOU, 2000;ERGEN et al, 2000;ÇINAR & ERGEN, 2002;LOGAN et al, 2002;ANTONIADOU, 2003;ÇINAR, 2003;KARALIS et al, 2003;KITSOS & KOUKOURAS, 2003;CHINTIROGLOU et al, 2004aCHINTIROGLOU et al, , 2004b, were organized on species (rows) -community type (columns) tables. The performed multivariate techniques included a hierarchical cluster analysis (group average) based on presence -absence data and the Bray-Curtis semimetric distance (CLARKE & WARWICK, 1994).…”