Artificial reef: Different kind of material s will be sunk on the Northem limit
economy and the willingness of managers and fishers to accept and share responsibility.
of the banks at depths between 30 and 50 meters where the biological production is optimal. These materials could be
In Kerkennah, the fishing industry represents around 40% of the employment of the active population. The traditional fish-
cleaned decommissioned ships and platform jackets, concrete structures, etc.
ing methods respect the stocks and are already half the way between fishing and fish farming. They are based on fixed fish-
These two techniques together with the creation of natural marine reserves or restricted fishing areas, have a wide synergistic effect. The stock enhancement restore the equilib-
eries and octopus trapping in territorial concessions. The overfishing by the coastal float near the limits of the conces-
rium of populations for target fish species and the artificial reef forms a regeneration source for the whole biodiversity. In this
portant socio-economic depression. Beach tourism started 20 years ago has been unsuccessful
operation, a particular attention will be paid to the conservation of the local genetic potential and the health of fish. A first description of the actual ecosystem and the follow up will be or-
due to the lack of attractiveness (low water depth and muddy bottoms). A nice artificial reef will become a good diving site and will have positive touristic effect on the area. The area
ganised with Tunisian and European Universities in order to develop a responsible approach to marine stock enhancement.
around the reef and part of the banks could become good sport fishing sites for tuna, swordfish, etc. Both terrestrial and ma-
sions is dangerously depleting the stocks and provokes an im-
rine eco-tourism will be developed.
Sociological aspects MARC
How such a model might work depends on the societal roles of fishermen, the importance of fish in coastal and domestic
GROSJEAN & BAUDOUIN DELNESTE Kraainem
Kerkennian fixed fisheries on the Posidonia meadow: long Iines of palm leaves conduct fishes into capture chambers.
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BELGIUM
Photo:J.F. GAILLOUD