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Mangrove increases resiliency of the French Guiana shrimp fishery facing global warming


  • Diop, Bassirou
  • Blanchard, Fabian
  • Sanz, Nicolas


This paper deals with the biological, ecological and economic impact of global warming and mangrove habitat availability on the French Guiana shrimp fishery. A dynamic bio-economic model is built by employing a shrimp stock's growth function depending on Sea Surface Temperature (SST) and on mangrove surface. The model is empirically calibrated for the French Guiana shrimp fishery using time series collected over 1995–2011. First, two Cobb-Douglas functions, which describe shrimp's natural growth and harvest, are estimated. Then, a Maximum Economic Yield (MEY) harvest rule, based on the optimization of the net present value derived from fishing, is computed. Three management strategies are compared (Closure, Status Quo management, and MEY) under three mangrove surface fluctuations and climatic scenarios: (a) SST and mangrove remain stable, (b) SST rises while mangrove declines, (c) SST rises and mangrove remains stable. The scenarios considering a SST rise are based on the median greenhouse gases emission projections estimated by the IPCC (Intergovernmental Panel on Climate Change). The scenario focused on the reduction of mangrove surface is based on a general rate calculated on a global level. Our study shows that preserving the mangrove will increase the resiliency of French Guiana shrimp fishery in the long run.

Suggested Citation

  • Diop, Bassirou & Blanchard, Fabian & Sanz, Nicolas, 2018. "Mangrove increases resiliency of the French Guiana shrimp fishery facing global warming," Ecological Modelling, Elsevier, vol. 387(C), pages 27-37.
  • Handle: RePEc:eee:ecomod:v:387:y:2018:i:c:p:27-37
    DOI: 10.1016/j.ecolmodel.2018.08.014

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    References listed on IDEAS

    1. Diop, Bassirou & Sanz, Nicolas & Duplan, Yves Jamont Junior & Guene, El Hadji Mama & Blanchard, Fabian & Pereau, Jean-Christophe & Doyen, Luc, 2018. "Maximum Economic Yield Fishery Management in the Face of Global Warming," Ecological Economics, Elsevier, vol. 154(C), pages 52-61.
    2. Allison Thomson & Katherine Calvin & Steven Smith & G. Kyle & April Volke & Pralit Patel & Sabrina Delgado-Arias & Ben Bond-Lamberty & Marshall Wise & Leon Clarke & James Edmonds, 2011. "RCP4.5: a pathway for stabilization of radiative forcing by 2100," Climatic Change, Springer, vol. 109(1), pages 77-94, November.
    3. M. Garza-Gil, 1998. "ITQ Systems in Multifleet Fisheries," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 11(1), pages 79-92, January.
    4. Edward B. Barbier, 2007. "Valuing ecosystem services as productive inputs," Economic Policy, CEPR;CES;MSH, vol. 22, pages 177-229, January.
    5. Duncan Knowler, 2002. "A Review of Selected Bioeconomic Models with Environmental Influences in Fisheries," Journal of Bioeconomics, Springer, vol. 4(2), pages 163-181, May.
    6. Nicolas Sanz & Bassirou Diop & Fabian Blanchard & Luis Lampert, 2017. "On the influence of environmental factors on harvest: the French Guiana shrimp fishery paradox," Environmental Economics and Policy Studies, Springer;Society for Environmental Economics and Policy Studies - SEEPS, vol. 19(2), pages 233-247, April.
    7. L. Doyen & A. Cissé & S. Gourguet & L. Mouysset & P.-Y. Hardy & C. Béné & F. Blanchard & F. Jiguet & J.-C. Pereau & O. Thébaud, 2013. "Ecological-economic modelling for the sustainable management of biodiversity," Computational Management Science, Springer, vol. 10(4), pages 353-364, December.
    8. Trond Bjørndal & Jon M. Conrad & Kjell G. Salvanes, 1993. "Stock Size, Harvesting Costs, and the Potential for Extinction: The Case of Sealing," Land Economics, University of Wisconsin Press, vol. 69(2), pages 156-167.
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    More about this item


    Renewable resources; Fishery bio-economic model; Global warming; Shrimp; Sea surface temperature; Mangrove;

    JEL classification:

    • Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery


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