Proceedings of the Second Mediterranean Symposium on Marine

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871 accepted taxa (Table 1). However, it should be noted that most species <strong>of</strong> <strong>the</strong> Laurencia complex and <strong>of</strong> nongeniculate Coralline algae were only tentatively included in <strong>the</strong> accepted taxa. In fact, because <strong>the</strong> taxonomy <strong>of</strong> such groups has recently undergone substantial reassessments, in absence <strong>of</strong> <strong>the</strong> study <strong>of</strong> herbarium specimens, <strong>the</strong> occurrence <strong>of</strong> most <strong>of</strong> such species should be confirmed. Table 1. The macroalgal italian flora: composition <strong>of</strong> <strong>the</strong> whole flora, <strong>of</strong> floras <strong>of</strong> each FAO sector (sector 3: Tyrrhenian Sea and adjacent basins; sector 4: Adriatic Sea; sector 5: Ionian Sea), <strong>of</strong> common species to all sectors as well as <strong>of</strong> sole species <strong>of</strong> each sector. Italy sector 3 sector 4 Rhodophyta 510 470 340 444 314 44 4 32 58.7% 61.2% 58.9% 63.2% Phaeophyta 205 169 124 148 93 26 21 15 23.6% 21.9% 21.5% 21.1% Chlorophyta 154 130 113 110 84 20 14 5 17.7% 16.9% 19.6% 15.7% Total 869 769 577 702 491 90 39 52 88.5% 66.4% 80.8% 56.5% 10.3% 4,5% 6.0% Since <strong>the</strong> Italian coasts (Fig. 1) fall within <strong>the</strong> FAO fishering sectors 3 (Tyrrhenian Sea and adjacent basins), 4 (Adriatic Sea) and 5 (Ionian Sea), <strong>the</strong> floristic consistency <strong>of</strong> each sector was calculated. The flora <strong>of</strong> <strong>the</strong> sector 3 is <strong>the</strong> richest with 769 taxa (470 Rhodophyta, 169 Phaeophyta and 130 Chlorophyta), followed by that <strong>of</strong> <strong>the</strong> sector 5 with 702 taxa (444 Rhodophyta, 148 Phaeophyta and 110 Chlorophyta) and by that <strong>of</strong> <strong>the</strong> sector 4 that resulted <strong>the</strong> poorest with 577 taxa (340 Rhodophyta, 124 Phaeophyta and 113 Chlorophyta). The three sectors share 491 taxa (equal to 56.5%), while 90 taxa (10.3%) are present only in <strong>the</strong> sector 3, 39 taxa (4.5%) in <strong>the</strong> sector 4 and 52 taxa (6.0%) in <strong>the</strong> sector 5 (Table 1). In order to understand <strong>the</strong> phytogeographic characteristics <strong>of</strong> <strong>the</strong> Italian flora, a specific investigation <strong>of</strong> <strong>the</strong> areals <strong>of</strong> every species has been conducted. Following that study, each species was assigned to a distribution-group named according to Cormaci et al. (1982). Chorological spectra (Table 2 and Fig. 2) <strong>of</strong> <strong>the</strong> Italian flora and <strong>of</strong> floras <strong>of</strong> sectors 3 and 5 are characterised by a dominance <strong>of</strong> <strong>the</strong> Atlantic element, followed by <strong>the</strong> <strong>Mediterranean</strong>, Cosmopolitan, Indo-Pacific, Circumtropical and Circumboreal; only that <strong>of</strong> <strong>the</strong> sector 4 shows a different sequence <strong>of</strong> distribution groups with <strong>the</strong> dominance <strong>of</strong> <strong>the</strong> Atlantic element, followed by <strong>the</strong> Cosmopolitan, <strong>Mediterranean</strong>, Circumtropical, Indo-Pacific and Circumboreal. sector 5 common species sole species <strong>of</strong> sector 3 sole species <strong>of</strong> sector 4 sole species <strong>of</strong> sector 5 ACTES DU DEUXIEME SYMPOSIUM MEDITERRANEEN SUR LA VEGETATION MARINE (ATHENES, 12-13 DECEMBRE 2003) 57
PROCEEDINGS OF THE SECOND MEDITERRANEAN SYMPOSIUM ON MARINE VEGETATION (ATHENS, 12-13 DECEMBER 2003) 58 Fig. 1. Map <strong>of</strong> Italy showing FAO Sectors Table 2. Chorological spectra <strong>of</strong> <strong>the</strong> whole macroalgal italian flora and <strong>of</strong> floras <strong>of</strong> each FAO sector. Distribution groups Italy sector 3 sector 4 sector 5 Atlantic 388 342 253 302 44.7% 44.5% 43.8% 43.0% <strong>Mediterranean</strong> 238 204 132 180 27.4% 26.5% 22.9% 25.6% Cosmopolitan 156 147 137 145 18.0% 19.1% 23.7% 20.7% Indo-Pacific 40 33 20 32 4.6% 4.3% 3.5% 4.6% Circumtropical 33 31 24 29 3.8% 4.0% 4.2% 4.1% Circumboreal 14 12 11 14 1.6% 1.6% 1.9% 2.0%
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United Nations Environment Programm
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PROCEEDINGS OF THE SECOND MEDITERRA
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CONTENTS/SOMMAIRE Programme .......
Page 8 and 9: ORFANIDIS S., TSIAGGA E. & STAMATIS
Page 10 and 11: Friday 12 December 2003 09:00 Openi
Page 12: Discussion Discussion - Littoral be
Page 15 and 16: PROCEEDINGS OF THE SECOND MEDITERRA
Page 22 and 23: MAPPING MARINE VEGETATION DISTRIBUT
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Page 30 and 31: Belsher T., Houlgatte E. (2000) - E
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Page 70 and 71: REFERENCES Agardh C. A. (1822-1823)
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Page 74 and 75: Langenbach G. (1873) - Die Meeresal
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SESSION ‘MAPPING MARINE VEGETATIO
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CARACTERISATION DE L’ETAT DES HER
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RESULTATS A- PHENOLOGIE Les princip
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Les futures recherches scientifique
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Williamson and Fitter, 1996; Piazzi
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Fig. 2: Spatial patterns of
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vulnerable to invaders. In reality
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BIOMONITORING OF ENVIRONMENTAL METL
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Table 1: Mercury concentration (in
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fraction of <stron
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EFFETS DE L’INCORPORATION DE L’
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Les aliments ont été distribués
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REFERENCES Association of</
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Jonge et al., 2002). Nutrient conce
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to total dissolved inorganic nitrog
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offs (group B; Fig
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PHYTOBENTHOS AS QUALITY ELEMENT FOR
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Padina pavonica and Halopteris scop
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Gelidiella ramellosa II - - - - 5.7
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CARACTERISATION DES HERBIERS A POSI
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une analyse lépidochronologique (P
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La limite de l’herbier à Posidon
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LITTORAL BENTHIC COMMUNITIES AS IND
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Several environmental factors were
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This category includes stations sit
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RAPID ASSESSMENT OF THE ECOLOGICAL
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For a thorough presentation <strong
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The Ecological Evaluation o
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APPLICATION OF ECOLOGICAL INDICES O
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The average taxonomic distinctness
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On Fig. 4 each of
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OVERVIEW OF THE ACTIVITIES AIMED AT
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at the same time f
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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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