Instituto Español de Oceanografía Centro Oceanográfico de Baleares

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Presentation transcript:

Instituto Español de Oceanografía Centro Oceanográfico de Baleares Recovery of the exploited populations. Improving the sustainability of the resources exploitation by means of marine reserves. R. Goñi and F. Alvarez Instituto Español de Oceanografía Centro Oceanográfico de Baleares

Short definition: any area protected (part or all) by law. General aspects Short definition: any area protected (part or all) by law. Areas managed mainly for: - Conservation of biodiversity and habitat - Protect species or populations - Fishery management - Scientific knowledge - Education, recreation and tourism In the W Mediterranean (mainly from 1980’s): - Multiple-use and diverse. Most of them to restore fisheries - Highest number in European waters - ECOMARE, EU Project. Environ. Conservation, 27(2). 2000

Marine Reserve effect Changes undergone by the living components of a marine system as a result of the reduction or elimination of an impact, most commonly fishing Increase of abundance and mean size Increase of reproductive potential Biomass export

MR Columbretes (SGPM-IEO) S. scrofa (red sea scorpio, cabracho) P. elephas (lobster, langosta)

Marine Reserve effect Changes undergone by the living components of a marine system as a result of the reduction or elimination of an impact, most commonly fishing Increase of abundance and mean size Increase of reproductive potential Biomass export

Increase of 6-20 times (after 10 years) Spawning potential: related to size and individuals number Increase of 6-20 times (after 10 years)

Marine Reserve effect Changes undergone by the living components of a marine system as a result of the reduction or elimination of an impact, most commonly fishing Increase of abundance and mean size Increase of reproductive potential Biomass export

Tagging experiences (lobster) MR Columbretes Average distance: 1-5 km. Maximum: 25 km Increase of artisanal CPUE in nearby fishing areas (MR Tabarca)

Lessons from worldwide experience Contribution to sustainable fisheries Socio-economic issues are critical. Support of local people Financial sustainability Monitoring program: • Assess management effectiveness • Adaptive management THANKS FOR YOUR ATTENTION