Proceedings of the Second Mediterranean Symposium on Marine

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Padina pavonica and Halopteris scoparia species covered <strong>the</strong> open spaces. At stations 2 and 3 <strong>the</strong> bushy layer was <strong>the</strong> only important stratum <strong>of</strong> <strong>the</strong> vegetation. In <strong>the</strong>se cases <strong>the</strong> species Corallina elongata and Ulva rigida were dominant The number <strong>of</strong> species per sampling ranged from 9 (September ’01 at Site 2) to 29 (March ’99 at Site 5). A statistically significant increase <strong>of</strong> <strong>the</strong> total number <strong>of</strong> species was noticed from <strong>the</strong> Inner Saronikos Gulf sampling sites (Site 1, Site 2 and Site 3) towards <strong>the</strong> Outer Saronikos and S. Evoikos gulfs (Site 4, Site 5 and Site 6). Minimum and maximum species numbers were found at Site 2 and 5, respectively (Fig. 3). Fig. 3: Structural and functional indices variation in <strong>the</strong> studied stations. Statistical significant variations are marked with **. H’=Shannon-Weaver index, J’=Pielou eveness index, EEI=Ecological Evaluation Index. Coverage values per sampling ranged from 90% (June ’01, Site 6) to 342% (June ’99, Site 5). Although <strong>the</strong>re is a trend <strong>of</strong> decrease in coverage values from <strong>the</strong> Inner Saronikos towards <strong>the</strong> Outer Saronikos and S. Evoikos gulfs, no statistically significant differences among <strong>the</strong> studied sites were found. The values <strong>of</strong> H’ and J’ presented a similar pattern <strong>of</strong> variation: <strong>the</strong>y are decreasing from Site 1 towards Site 4, <strong>the</strong>n <strong>the</strong>y are increasing towards Site 5 and finally <strong>the</strong>y decrease ACTES DU DEUXIEME SYMPOSIUM MEDITERRANEEN SUR LA VEGETATION MARINE (ATHENES, 12-13 DECEMBRE 2003) 195
PROCEEDINGS OF THE SECOND MEDITERRANEAN SYMPOSIUM ON MARINE VEGETATION (ATHENS, 12-13 DECEMBER 2003) 196 again at Site 6. The values <strong>of</strong> H’ ranged from 1.33 (August ’98, Site 2) to 4.13 (March ’99, Site 5) and <strong>the</strong> values <strong>of</strong> J’ ranged from 0.36 (August ’98, Site 2) to 0.85 (March ’99, Site 5). Table 1: List <strong>of</strong> species in <strong>the</strong> study area Species ESG Site 1 Site 2 Site 3 Site 4 Site 5 Site 6 Chlorophyta Acetabularia acetabulum I - - - 0.2 0.8 0.8 Anadyomene stellata I - - - 0.3 0.8 1.0 Bryopsis spp. II 0.3 - - - - 0.4 Caulerpa racemosa II - - 0.2 9.3 - - Cladophora spp. II 2.2 0.2 9.8 3.5 4.3 5.4 Codium fragile II 1.0 0.8 - - - - Enteromorpha spp. II 3.3 - - - - 0.4 Flabellia petiolata I - - - 1.2 - 1.4 Halimeda tuna I - - 4.2 0.7 11.3 2.4 Pseudochlorodesmis furcellata II - - - - 0.7 0.4 Ulva rigida II 9.8 45.8 40.2 5.8 - - Valonia utricularis II - - 0.3 0.2 0.8 0.2 Phaeophyceae Colpomenia sinuosa II 2.7 4.3 0.8 - - - Cystoseira cf. Crinita I 59.0 - 14.3 76.8 52.4 36.3 Cystoseira compressa I 9.5 - - 15.0 8.0 35.0 Cystoseira mediterranea I - - - 1.7 - - Dictyopteris membranacea II 16.5 51.8 14.7 2.7 - 2.9 Dictyota spp. II 0.5 18.5 10.2 2.5 4.4 3.3 Ectocarpus sp. II - - - - - 0.4 Halopteris filicina II - - - - 0.2 2.9 Halopteris scoparia II 12.5 0.2 19.7 14.5 1.9 0.8 Padina pavonica I 2.7 4.5 7.0 8.5 7.5 10.3 Petalonia fascia II 14.5 14.7 - - - - Sargassum vulgare I 22.2 4.7 12.5 15.2 6.0 - Sphacelaria cirrosa II 2.7 - - - - - Sphacelaria furcigera II - - 0.2 2.3 19.3 5.0 Scytosiphon lomentaria II - - - - - 0.4 Taonia atomaria I 0.5 - - 0.7 - - Rhodophyta Acanthophora delilei II 0.5 - 22.0 - - - Amphirhoa rigida I - - - 3.2 - - Antithamnion spp. II - - - - - - Calithamnion corumbosum II - - - - 0.5 - Ceramium ciliatum II - - - 0.5 - - Ceramium diaphanum II 0.7 - - 0.2 2.2 - Champia parvula II - - - - 1.2 - Chondria dasyphylla II - 2.5 - - 0.8 - Corallina elongata I 2.0 33.8 2.8 0.7 7.7 3.3 Corallina granifera I - - - - 12.8 0.7 Dasya rigidula II - - - - 0.7 - Dermatolithon spp. I 3.3 - - 2.5 6.9 0.8 Erithrotrichia spp. II 0.0 1.7 - - - - Fosliella spp. I 1.7 - 0.3 4.2 8.0 1.3 Gelidium spp. II - - - 0.5 - -
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United Nations Environment Programm
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PROCEEDINGS OF THE SECOND MEDITERRA
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CONTENTS/SOMMAIRE Programme .......
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ORFANIDIS S., TSIAGGA E. & STAMATIS
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Friday 12 December 2003 09:00 Openi
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Discussion Discussion - Littoral be
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MAPPING MARINE VEGETATION DISTRIBUT
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1984; Boudouresque et al., 1985b; M
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Elbu cove, Scandula nature 1/ 1190
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features of P. oce
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Belsher T., Houlgatte E. (2000) - E
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Gloux B. (1984) - Méthodes acousti
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Pasqualini, V., Pergent-Martini, C.
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Here, we will firstly delineate wha
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Fig. 2. The tree of</strong
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In the same way, "
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While the
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COASTAL DEVELOPMENT The destruction
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invaders, overfishing and climate c
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At the end <strong
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to be built up, this disappearance
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Boudouresque C.F., Ribera M.A. (199
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Marchand M. (1981) - Amoco Cadiz. B
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FLORISTIC SIMILARITY AND DISCONTINU
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871 accepted taxa (Table 1). Howeve
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Fig. 2. Hystogram showing t
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4 (1.6%) and 2 (1.1%) at Spain; 5 (
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characteristics of
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Fig. 9. Hystogram showing t
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Fig. 11. Dendrogram depicting mutua
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REFERENCES Agardh C. A. (1822-1823)
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De Toni G. B. (1905) - Sylloge Alga
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Langenbach G. (1873) - Die Meeresal
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SESSION «BIOLOGY, ECOLOGY AND INVE
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SESSION ‘MAPPING MARINE VEGETATIO
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Page 145 and 146: PROCEEDINGS OF THE SECOND MEDITERRA
Page 164 and 165: CARACTERISATION DE L’ETAT DES HER
Page 166 and 167: RESULTATS A- PHENOLOGIE Les princip
Page 168 and 169: Les futures recherches scientifique
Page 170 and 171: Williamson and Fitter, 1996; Piazzi
Page 172 and 173: Fig. 2: Spatial patterns of
Page 174 and 175: vulnerable to invaders. In reality
Page 176 and 177: BIOMONITORING OF ENVIRONMENTAL METL
Page 178 and 179: Table 1: Mercury concentration (in
Page 180 and 181: fraction of <stron
Page 182 and 183: EFFETS DE L’INCORPORATION DE L’
Page 184 and 185: Les aliments ont été distribués
Page 186 and 187: REFERENCES Association of</
Page 188 and 189: Jonge et al., 2002). Nutrient conce
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Page 192 and 193: offs (group B; Fig
Page 194 and 195: PHYTOBENTHOS AS QUALITY ELEMENT FOR
Page 198 and 199: Gelidiella ramellosa II - - - - 5.7
Page 200 and 201: CARACTERISATION DES HERBIERS A POSI
Page 202 and 203: une analyse lépidochronologique (P
Page 204 and 205: La limite de l’herbier à Posidon
Page 206 and 207: LITTORAL BENTHIC COMMUNITIES AS IND
Page 208 and 209: Several environmental factors were
Page 210 and 211: This category includes stations sit
Page 212 and 213: RAPID ASSESSMENT OF THE ECOLOGICAL
Page 214 and 215: For a thorough presentation <strong
Page 216 and 217: The Ecological Evaluation o
Page 218 and 219: APPLICATION OF ECOLOGICAL INDICES O
Page 220 and 221: The average taxonomic distinctness
Page 222 and 223: On Fig. 4 each of
Page 224 and 225: OVERVIEW OF THE ACTIVITIES AIMED AT
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Page 228: POSTERS ACTES DU DEUXIEME SYMPOSIUM
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Mr Baris AKÇALI D.E.U. Institute <
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Mr Francesco Saverio CIVILI MED POL
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Mr Jamel KSOURI Laboratoire de Biod
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Mr Frédéric PLATINI Accord RAMOGE
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Ms Eleni TRYFON Natural Environment
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Proceedings of the Second Mediterranean Symposium on Marine

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