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8e Forum halieumétrique, La Rochelle, juin 2007. Is the recent Cap Roux Marine Protected Area (France, Var) an efficient tool to sustain professional fisheries ?. Catherine Seytre, Patrice Francour EA 3156 « Gestion de la Biodiversité » Université de Nice-Sophia Antipolis.
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8e Forum halieumétrique, La Rochelle, juin 2007 Is the recent Cap Roux Marine Protected Area (France, Var) an efficient tool to sustain professional fisheries ? Catherine Seytre, Patrice Francour EA 3156 « Gestion de la Biodiversité » Université de Nice-Sophia Antipolis
The Cap Roux Marine Protected Area • Initiated by professional fishermen • Management tool
The Cap Roux Marine Protected Area • Protected since 2004 • 450 ha • Habitats available
Monitoring objectives • Beginning of Reserve Effect • Effect of MPA on professional fishermen activities Methods • Experimental net fishing • Underwater visual censuses : Fish Ecological Index (FEI)
Sampling method of fish assemblages : Experimental net fishing • Principle: • Net fishing carried out by a professional fisherman • Standardisation of fishing tools • Calculation: • Biomass • Species number • Advantages: • Assessment of reserve effect on profesionnal fishermen activities • Complements UVC
Sampling method of fish assemblages : FEI • Principle: • 6 censuses • Presence / absence of target species • Size class (small/medium vs large) • Calculation: • Relative species richness • Mean Index • Cumulative Index • Coefficient of Variation • Bio-indicator: • Easy and quick to implement • Results pertinence: highlights fishing and spearfishing pressure
Results 1,5 kg / 6 species • Experimental net fishing: Autumn 2006 9 kg / 9 species 2,4 kg / 4 species
Results • Relative species richness: • Little difference IR / OR • IR values more constant
Results • MeanIndex: • Little difference (OR/IR) except in autumn 2005 • Poaching in 2006?
Results • Cumulative Index: • IR values > OR • IR values more constant • Important seasonal fluctuations OR
Results • Coefficient of variation: • Higher CVs IR high variability • Assemblages stabler OR
Conclusion Preliminary study of a recent Marine Protected Area • FEI in the MPA • Mean index similar • Higher Cumulative index • Higher Coefficient of variation • Species Richness less variable • Experimental fishing • Biomass and Specific Richness are higher Inside the MPA, the fish assemblage has become more abundant, but is still over dispersed • First stage of the reserve effect • Results of FEI in 2006: due to poaching?
Conclusion Preliminary study of a recent Marine Protected Area • FEI - species list adapted to small scale fisheries • - noticeable method to detect early reserve effect • FEI (UVC) and Experimental Fishing: two complementary methods • Professional Fishermen implication: the best way to ensure MPA success in the future • MPA dynamic: within 3 years, a reserve effect