Transcript Is the recent Cap Roux marine protected area (France, Var

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
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Beginning of Reserve Effect
Effect of MPA on professional fishermen activities
Methods
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
Experimental net fishing
Underwater visual censuses : Fish Ecological Index (FEI)
Sampling method of fish assemblages : Experimental net
fishing

Principle:
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Calculation:
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Net fishing carried out by a professional fisherman
Standardisation of fishing tools
Biomass
Species number
Advantages:
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
Assessment of reserve effect on profesionnal fishermen activities
Complements UVC
Sampling method of fish assemblages : FEI

Principle:
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Calculation:
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6 censuses
Presence / absence of target species
Size class (small/medium vs large)
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
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1,5 kg / 6 species
Experimental
net fishing:
Autumn 2006
9 kg / 9 species
2,4 kg / 4 species
Results
Relative species richness:
20
Relative species richness
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18
16
Inside Reserve
Outside North
Outside South
14
12
10
Winter
05
Spring Autumn Winter Autumn Winter
05
05
06
06
07
 Little difference IR / OR
 IR values more constant
Spring
07
Results
Mean Index:
45
Mean Index (%)

35
Inside Reserve
25
Outside North
Outside South
15
5
Winter
05
Spring
05
Autumn
05
Winter
06
Autumn
06
Winter
07
Spring
07
 Little difference (OR/IR) except in autumn 2005
 Poaching in 2006?
Results
Cumulative Index:
55
Cumulative Index (%)

45
Inside Reserve
Outside North
35
Outside South
25
15
Winter
05
Spring Autumn Winter Autumn Winter
05
05
06
06
07
Spring
07
 IR values > OR
 IR values more constant
 Important seasonal fluctuations OR
Results
Coefficient of variation:
60
50
40
CV (%)
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Inside Reserve
Outside North
30
Outside South
20
10
0
Winter
05
Spring
05
Autumn
05
Winter
06
Autumn
06
Winter
07
Spring
07
 Higher CVs IR  high variability
 Assemblages stabler OR
Conclusion
Preliminary study of a recent Marine Protected Area
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FEI in the MPA
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Mean index similar
Higher Cumulative index
Higher Coefficient of variation
Species Richness less variable
Inside the MPA, the fish
assemblage has become
more abundant, but is still
over dispersed
Experimental fishing

Biomass and Specific Richness are higher
 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