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Proceedings of the 6th Mediterranean syMPosiuM on Marine

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Proceedings of the 6th Mediterranean syMPosiuM on Marine

PROCEEDINGS OF THE

6 th

MEDITERRANEAN

S Y MP OSIU M

ON MARINE VEGETATION

ANTALYA, TURKEY, 14-15 JANUARY 2019Technical partnerFinancial support Legal notice: The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the Specially Protected Areas Regional Activity Centre (SPA/RAC) and UN Environment/Mediterranean Action Plan (MAP) concerning the

legal status of any State, Territory, city or area, or of its authorities, or concerning the delimitation of

their frontiers or boundaries.

Copyright: All

property rights of texts and content of different types of this publication belong to

SPA/RAC. Reproduction of these texts and contents, in whole or in part, and in any form, is prohibited

without prior written permission from SPA/RAC, except for educational and other non-commercial purposes, provided that the source is fully acknowledged.

© 2018 -

united nations environment Progr amme

Mediterranean action Plan

specially Protected areas regional activity centr e (sPa/rac)

Boulevar

d du leader yasser arafat

B.P. 337

1080 tunis

cedex - tunisia. e-mail : car-asp@spa-rac.org For bibliographic purposes, this document may be cited as:

UNEP/M

AP - SPA/RAC, 2019. Proceedings of the 6

th

Mediterranean Symposium on Marine Vegetation

(Antalya, Turkey, 14-15 January 2019). LANGAR H., OUERGHI A., edits, SPA/RAC publi., Tunis, 148 p.

ISBN 978-9938-9574-4-0

Available at:

www.spa-rac.org

Proceedings of

the 6 th

Mediterranean

Symposium on Marine Vegetation

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C. algeriensis

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C. montagnei

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6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)11

C. algeriensis C. amentacea C. sedoides

C. barbata . aurantia C. schiffneri C. foeniculacea . dubia

C. barbata C. compressa C. foeniculacea

Cystoseira

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Cystoseira

(a) (b) (c ) (d) (e) (f) (g) (h) (i)

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Sources:

Posidonia oceanica

Posidonia oceanica

Cymodocea nodosa

Cymodocea nodosa

Cymodocea nodosa

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Bibliography

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25$/
&20081,&$7,216

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6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)23

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)24

Posidonia oceanica

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)25

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)26

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)27

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)28

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)29

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)30

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)31

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)32

Posidonia oceanica

Cymodocea nodosa

Posidonia oceanica

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)33

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)34

POSIDONIA OCEANICA

of P. oceanica possibly occurred between 160±100 (-29 m) and

1050±110 years BP (-37 m). The deeper and the further from the shore the sampled dead matte

was, the more ancient it was. (i) trawling; (ii) post mortem erosion of the roof of the dead matte, by hydrodynamism or trawling; (iii) compaction of dead matte over time; (iv) current and ancient rise in sea level; (v) current and past climate change and/or (vi) human induced changes (e.g. turbidity). The lower limit withdrawal is more marked in highly human-impacted areas than in pristine areas, where it may reflect global forcings such as sea level rise, warming and climate episodes).

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)35

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)36

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)37

P. oceanica

et al.

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)38

ANDROMÈDE OCÉANOLOGIE (2012) - Inventaires biologiques et analyse écologique des Andromède Océanologie / Agence des Aires Marines Protégées, Andromède Océanologie publ., Carnon: 1-501. ASTRUCH P., BOUDOURESQUE C.F., BONHOMME D., GOUJARD A., ANTONIOLI P.A., BONHOMME P., PEREZ T., RUITTON S., DE SAINT-MARTIN T., VERLAQUE M. (2012) - Mapping and state of conservation of benthic marine habitats and assemblages of Port-Cros national Park (Provence, France, northwestern Mediterranean Sea). Sci. Rep. Port-Cros Natl.

Park, 26: 45-90.

BLANC J.J., JEUDY DE GRISSAC A. (1978) - Recherches de géologie sédimentaire sur les herbiers à Posidonies du littoral de la Provence. Contrat CNEXO 76//4043, 77/4074, CNEXO publ., Paris: i-vii, 1-185, 42 plates. BONHOMME P., BONHOMME D., BOUDOURESQUE C.F., CADIOU G., CHARBONNEL E., RUITTON S. (2010) - Monitoring of the lower limit of Posidonia oceanica meadows at Port- Cros Island, Provence, Mediterranean Sea. Sci. Rep. Port-Cros Natl Park, 24: 87-103.

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)39

BOUDOURESQUE C.F., GIRAUD G., THOMMERET J., THOMMERET Y. (1980) - First attempt at dating by 14C the undersea beds of dead Posidonia oceanica in the Bay of Port Man (Port-Cros, Var, France). Trav. Sci. Parc Nation. Port-Cros, 6: 239-242. BOUDOURESQUE C.F., MEINESZ A. (1982) - Découverte de l'herbier de posidonie. Parc national de Port-Cros publ., Hyères : i-iii + 1-79. BOUDOURESQUE C.F., BERNARD G., PERGENT G., SHILI A., VERLAQUE M. (2009) - Regression of Mediterranean sea grasses caused by natural processes and anthropogenic disturbances and stress: a critical review. Bot. Mar., 52: 395-418. BOUDOURESQUE C.F., BERNARD G., BONHOMME P., CHARBONNEL E., DIVIACCO G., MEINESZ A., PERGENT G., PERGENT-MARTINI C., RUITTON S., TUNESI L. (2012) - Protection and conservation of Posidonia oceanica meadow. RAMOGE, Monaco and RAC-

SPA publ., Tunis: 1-202.

GIAKOUMI S., HALPERN B.S., MICHEL L.N., GOBERT S., SINI M., BOUDOURESQUE C.F., GAMBI M.C., KATSANEVAKIS S., LEJEUNE P., MONTEFALCONE M., PERGENT G., PERGENT-MARTINI C., SANCHEZ-JEREZ P., VELIMIROV B., VIZZINI S., ABADIE A., COLL M., GUIDETTI P., MICHELI F., POSSINGHAM H.P. (2015) - Towards a framework for assessment and management of cumulative human impacts on marine food webs. Cons.

Biol., 29 (4): 1228-1234.

GRAVEZ V., NIERI M., BOUDOURESQUE C.F. (1992) - Surveillance de l' herbier de Posidonie de la baie du Prado (Marseille). Rapport de synthèse 1986-1992. Direction Générale des Services Techniques, Ville De Marseille et GIS Posidonie, GIS Posidonie publ.,

Marseille: 1-80.

MEINESZ A., BOUDOURESQUE C.F., BIANCON I C.H., SIM ONIAN M. (1987) -

Cartographie de la limite inférieure de l'herbier de Posidonies de la baie d'Elbo. Trav. Sci. Parc

Nat. Région. Rés. Nat. Corse, 13: 27-37.

MORHANGE C. (2003) - Archaeological and biological records of relative sea-level changes in the Med iterranean during th e Late Holocene. Two case stud ies of gradual evolu tion to instantaneous events, Marseilles (France) and Pozzuoli (Italy). In: Human records of recent geological evolution in the Mediterranean basin historical and archeological evidence. CIESM Workshop monographs 24, CIESM publ., Monaco: 77-83. MOSSÉ R.A . (1984) - Recherches lépi dochronologiques sur Posidonia oceanica: rhizomes plagiotropes et orthotropes des herbiers profonds de Port-Cros (Méditerranée, France). Trav.

Sci. Parc Nation. Port-Cros, 10: 87-107.

PAILLARD M., GRAVEZ V., CLABAUT P., WALKER P., BLANC J.J., BOUDOURESQUE C.F., BELSHER T., URSCHELER F., POYDENOT F., SINNASSAMY J.M., AUGRIS C., PEYRONNET J.P., KESSLER M., AUGUSTIN J.M., LE DREZEN E., PRUDHOMME C., RAILLARD J.M., PERGENT G., HOAREAU A., CHARBONNEL E. (1993) - Cartographie de l'herbier de Posidonie et des fonds marins environnants de Toulon à Hyères (Var - France). Reconnaissance par sonar latéral et photographie aérienne. Notice de présentation. Ifremer and GIS Posidonie, GIS Posidonie publ., Marseille: 1-36 + 3 maps. PERGENT G., BAZAI RI H., BIANCHI C.N., BOUDOU RESQUE C. F., BUIA M. C., CLABAUT P., HARMELIN-VIVIEN M., MATEO M.A., MONTEFALCONE M., MORRI C., ORFANIDIS S., PERGENT-MARTINI C., SEMROUD R., SERRANO O., VERLAQUE M. (2012) - Mediterranean seagrass meadows: resilience and contribution to climate change mitigation. A short summary. IUCN publ, Gland, Málaga: 1-40. PERGENT G., PERGENT-MARTINI C., BEIN A., DEDEKEN M., OBERTI P., ORSINI A., SANTUCCI J.F., SHORT F. (2015) - Dynamic of Posidonia oceanica seagrass meadows in the northwestern Mediterranean: could the climate change be to blame? C.R. Biol., 338: 484-493.

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)40

POSIDONIA

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Port-Cros:

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)42

Posidonia

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Posidonia

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Posidonia

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C. elegans

201720186th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)50

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)51

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)52

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)53

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)54

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)55

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)56

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)57

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)58

POSIDONIA OCEANICA

POSIDONIA

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)59

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)60

Posidonia ocenica

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)61

Posidonia oceanica

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)62

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)63

POSIDONIA OCEANICA

40ௗP

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)64

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)65

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)66

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)67

POSIDONIA OCEANICA

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)68

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)69

Posidonia oceanica

P. oceanica

NE SW

5 ms TWTT s.p. P.o.

b.m. m.w P.o.

P.o. 50 m

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)70

Posidonia oceanica

Posidonia oceanica 100 m 5 ms TWTT

500 m m.w.

m.w. m.w. A B C y = 1,0644x -0,05

R² = 0,87205

0,51,52,53,5

0,511,522,533,5Measures of mat

thicknesseson the DTM (m)Measures of mat thicknesses by scuba diving (m)

SOM(<2mm)

CaCO3(>2mm)

Gravel(>2mm)

Sand(<2mmet>0,063mm)

Mud(<0,063mm)6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)71

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)72

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)73

CYSTOSEIRA RAYSSIAE

6th Mediterranean Symposium on Marine Vegetation (Antalya, Turkey, 14-15 January 2019)74

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