Preprint volume - SIBM

Pre-print Volume – Posters
Topic 3: INTEGRATED COASTAL ZONE MANAGEMENT
values of abundances were detected under the cages and they sharply decrease already
at 300 meters from them. An opposite pattern was observed for equitability (Fig. 1).
0,7
1,2
500
0,6
1
J N
400
0,5
0,4
g
0,3
0,2
0,8
J 0,6
0,4
300
N
200
0,1
0,2
100
0
0
0
CSA2 CSA1 ISA1 ISA2 TA2 TA1 INA1 INA2 CNA2 CNA1 CS A1 CS A2 IS A1 IS A2 T A1 T A2 IN A1 IN A2 CN A1 CN A2
Fig. 1 - Epiphyte biomass of Gorgona meadows (left) and abundance and equitability of
macrozoobenthic assemblages (right). T=disturbed site; I=intermediate site; C=control site;
A1, A2, areas.
Biomassa degli epifiti nelle praterie di Gorgona (sinistra) e abbondanza ed equitabilità dei
popolamenti macrobentonici di Capraia (destra). T=sito di impatto;I=sito intermedio;
C=sito di controllo; A1, A2, aree.
Conclusions – Results showed that the impact of these two farms can be clearly
identified under the cages both on P. oceanica and unvegetated sediments. However, in
both cases, the effects were very localized being already limited or absent even at 300
meters from the cages. These data suggested that small activities can guarantee the
environmental acceptability of farms also in marine protected areas. Thus, small
displaced farms with low environmental impact located in healthy areas may be
considered sustainable for the environment and they can offer the vantage of a local
distribution of their products with an important role in sustaining local livelihoods and
alleviating economic losses due to restrictions imposed by protection measures.
References
SIMARD F., OJEDA J., HAROUN R. (2008) – Then sustainable development of Mediterranean
aquaculture: problems and perspectives. Options Méditerranéennes, 62: 113-124.
41 st S.I.B.M. CONGRESS Rapallo (GE), 7-11 June 2010
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