Proceedings of the Second Mediterranean Symposium on Marine

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Fig. 9. Hystogram showing <strong>the</strong> percentages <strong>of</strong> Fucophyceae <strong>of</strong> <strong>the</strong> six floras investigated belonging to each distribution group. Chlorophyceae (Table 7 and Fig. 10) <strong>of</strong> each area was calculated. On this basis, <strong>the</strong> phytogeographic similarity among different areas has been established and a hierarchical clustering has been carried out using <strong>the</strong> same methodology as for phytogeographic comparisons within <strong>the</strong> Italian flora. In <strong>the</strong> dendrogram <strong>of</strong> Ceramiales (Fig. 11), <strong>the</strong> following groups can be identified: SPA-MAT and ITA-FRA linked at a level higher than 90% and GTR-LEL linked to <strong>the</strong> first two groups at a value higher than 80%. Such a dendrogram is very similar to that <strong>of</strong> Fucophyceae (Fig. 12) in which <strong>the</strong> following groups can be detected: SPA-MAT at a level <strong>of</strong> importance <strong>of</strong> about 95% to which GTR is linked at a level <strong>of</strong> about 93% and ITA- FRA at a level <strong>of</strong> about 93% linked to <strong>the</strong> previous group at about 90%. The LEL area is linked to both <strong>the</strong> previous groups at a level <strong>of</strong> about 75%. In <strong>the</strong> dendrogram <strong>of</strong> Chlorophyceae (Fig. 13) areas are always linked at high level <strong>of</strong> importance (<strong>the</strong> lowest value is higher than 80%), but <strong>the</strong> resulting groups (ITA and SPA with FRA linked at a level <strong>of</strong> importance higher than 95%; GTR and MAT linked to <strong>the</strong> previous group at a level <strong>of</strong> about 90% and LEL linked to <strong>the</strong> previous groups at a level <strong>of</strong> about 85%) are different from those identifiable in <strong>the</strong> previous dendrogram. ACTES DU DEUXIEME SYMPOSIUM MEDITERRANEEN SUR LA VEGETATION MARINE (ATHENES, 12-13 DECEMBRE 2003) 65
PROCEEDINGS OF THE SECOND MEDITERRANEAN SYMPOSIUM ON MARINE VEGETATION (ATHENS, 12-13 DECEMBER 2003) 66 Table 7. Chorological spectra <strong>of</strong> Chlorophyceae <strong>of</strong> <strong>the</strong> <strong>Mediterranean</strong> Sea and <strong>of</strong> each <strong>Mediterranean</strong> flora investigated. Distribution Mediterra- ITA SPA FRA GTR LEL MAT groups nean Sea Atlantic 79 68 53 52 40 25 36 44.3% 44.1% 44.1% 42.6% 42.1% 34.7% 40.0% Cosmopolitan 42 42 33 35 32 22 29 23.5% 27.2% 27.5% 28.6% 33.6% 30.5% 32.2% Circumboreal 2 1 1 2 2 1 1 1.1% 0.6% 0.8% 1.6% 2.1% 1.3% 1.1% Indo-Pacific 12 7 7 4 4 8 5 6.7% 4.5% 5.8% 3.2% 4.2% 11.1% 5.5% <strong>Mediterranean</strong> 29 24 17 20 9 7 9 16.2% 15.5% 14.1% 16.3% 9.4% 9.7% 10.0% Circumtropical 14 12 9 9 8 9 10 7.8% 7.7% 7.5% 7.3% 8.4% 12.5% 11.1% Fig. 10. Histogram showing <strong>the</strong> percentages <strong>of</strong> Chlorophyceae <strong>of</strong> <strong>the</strong> six floras investigated belonging to each distribution group.
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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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Page 22 and 23: MAPPING MARINE VEGETATION DISTRIBUT
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Page 56 and 57: FLORISTIC SIMILARITY AND DISCONTINU
Page 58 and 59: 871 accepted taxa (Table 1). Howeve
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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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