Preprint volume - SIBM

Pre-print Volume – Oral presentations
Topic 3: INTEGRATED COASTAL ZONE MANAGEMENT
Tab. 2 - Concordance (%) of coverage in the three years. A: Posidonia oceanica; B: mosaic of P.
oceanica and dead matte; C: dead matte.
Concordanza (%) del ricoprimento nei tre anni. A: P. oceanica; B: mosaico; C: matte
morta.
1990
1991 2006 2006
A B C A B C A B C
A 0 37.2 0
B 0 0 3.8
C 0
0
3.7
1990
The V1 core (Fig. 2) is characterized by at least three continuous levels of dead matte
of P. oceanica: 14 C datations have been coupled with relative sea level and bottom
position obtained for the same area by Carobene et al. (2008) throughout the Holocene,
allowing to reconstruct the millennial evolution of a section of P. oceanica meadow.
1991
41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010
168
Fig. 2 - V1 core with 14 C dates. Depth of
the bottom at a given time during
Holocene (lines below the actual
bottom, years BP) and the relative msl
position have been derived from
Carobene et al. (2008).
Carota V1 e datazioni C 14 . La
profondità del fondale Olocenico (linee
al di sotto del fondale attuale, anni BP)
e la relativa posizione del lmm sono
state derivate da Carobene et al. (2008).
The monetary value of P. oceanica has been summarized in Tab.3 and compared with
a previous evaluation by Blasi (2009).
Tab. 3 - Per square meter monetary values of some Posidonia oceanica eco-fuctions.
Valori monetari per metro quadrato di alcune funzioni ecologiche di P. oceanica.
Function Unit of measure This study Blasi, 2009
0.177 (0.024) 1.66 (0.01)
Primary production (of which carbon) €·m - ²·y -1
Nursery role €·m - ²·y -1 0.026 -
O release €·m - ²·y -1 0.007 14.21
Conclusions - Three main conclusions can be drawn on the short-term and long-term
evolution of P. oceanica in the study area and on its economical value trough time.