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BMAR - Dissertações de mestrado

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http://hdl.handle.net/10400.12/4204

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Browsing BMAR - Dissertações de mestrado by advisor "Andringa, Annelies"

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  • Effectiveness of locally managed marine protected areas in the Visayas, Negros Oriental Province, Philippines
    Publication . Rohrer, Joël Maxime; Gonçalves, Emanuel João; Costa, Bárbara Horta e; Andringa, Annelies
    No-take marine protected areas (MPAs) have been established as a management strategy to conserve biodiversity and sustain fisheries. When properly managed, such areas can maintain or increase reef productivity and also benefit surrounding areas, providing catch for fishermen. In the Philippines, most MPAs are usually small (<1 km2) and locally managed, and most present poor levels of enforcement. Five locally managed MPAs located in Negros Oriental were studied in order to test the effectiveness of such MPAs. The objectives were to compare fish biomass, richness, abundance, diversity and evenness values between MPAs and adjacent fished sites and see how they varied between the different enforcement levels, sizes, and ages of these MPAs. Underwater visual census was carried out to record and measure fish from 76 indicator species inside and outside MPAs from September 2016 to February 2017. Data analysis showed that fish population parameter values were only higher inside certain MPAs when compared to fished areas. Two MPAs were found to be the most effective in the region, exhibiting greater species biomass, richness, density, diversity and evenness than non-MPAs. On the other hand, three MPAs were found to be ineffective, exhibiting similar fish population parameters than non-MPA sites. From the studied parameters, only enforcement level played a significant role in the effectiveness of these MPAs. Small and locally managed MPAs can benefit fish populations, but only when properly managed and enforced. Certain areas need further investments from the municipalities to be able to be effective and properly conserve fish populations.
    2017Master thesis Open access Show more