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8e Forum halieumétrique, La Rochelle, juin 2007

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

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  1. 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

  2. The Cap Roux Marine Protected Area • Initiated by professional fishermen • Management tool

  3. The Cap Roux Marine Protected Area • Protected since 2004 • 450 ha • Habitats available

  4. Monitoring objectives • Beginning of Reserve Effect • Effect of MPA on professional fishermen activities Methods • Experimental net fishing • Underwater visual censuses : Fish Ecological Index (FEI)

  5. 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

  6. 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

  7. Results 1,5 kg / 6 species • Experimental net fishing: Autumn 2006 9 kg / 9 species 2,4 kg / 4 species

  8. Results • Relative species richness: • Little difference IR / OR • IR values more constant

  9. Results • MeanIndex: • Little difference (OR/IR) except in autumn 2005 • Poaching in 2006?

  10. Results • Cumulative Index: • IR values > OR • IR values more constant • Important seasonal fluctuations OR

  11. Results • Coefficient of variation: • Higher CVs IR  high variability • Assemblages stabler OR

  12. 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?

  13. 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

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