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Sustainability of small-scale fisheries in the middle Negro River (Amazonas – Brazil): A model with operational and biological variables

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  • Inomata, Sandrelly Oliveira
  • Gonzalez, Alba Maria Guadalupe Orellana
  • Román, Rodrigo Máximo Sánchez
  • de Souza, Lucirene Aguiar
  • de Carvalho Freitas, Carlos Edwar

Abstract

Fishing is a traditional and important activity in the Amazon Basin, mainly for low-income populations. Nevertheless, Amazonian fish diversity and abundance is threatened by several anthropogenic sources, including deforestation, hydroelectric dams, oil and gas development, global changes and overfishing. This article analyzes the proposal of an alternative model and discusses the predictions obtained from various scenarios and relates them to the management of commercial fishing in the region of the middle Negro River. The model was developed using Stella® 9.0, a software package based on system dynamics. Two scenarios were simulated to investigate the dynamics of the fish stock: (a) scenario I: considered a reduction in stock replacement values to half the initial values, a 50% increase in fishing effort, and variable costs and average monthly prices of fish, and; (B) scenario II: analyzed the effect of prohibiting commercial fishing. The planning horizon used was 120 months. Given the results achieved by the simulations, it would be interesting for authorities in the region to have effective control over fishing access and for users to be aware that these natural resources, even though renewable, are susceptible to depletion.

Suggested Citation

  • Inomata, Sandrelly Oliveira & Gonzalez, Alba Maria Guadalupe Orellana & Román, Rodrigo Máximo Sánchez & de Souza, Lucirene Aguiar & de Carvalho Freitas, Carlos Edwar, 2018. "Sustainability of small-scale fisheries in the middle Negro River (Amazonas – Brazil): A model with operational and biological variables," Ecological Modelling, Elsevier, vol. 368(C), pages 312-320.
    • Handle: RePEc:eee:ecomod:v:368:y:2018:i:c:p:312-320
    DOI: 10.1016/j.ecolmodel.2017.11.025
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    References listed on IDEAS

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    1. Krystyna A. Stave, 2002. "Using system dynamics to improve public participation in environmental decisions," System Dynamics Review, System Dynamics Society, vol. 18(2), pages 139-167, June.
    2. Laura S Storch & Sarah M Glaser & Hao Ye & Andrew A Rosenberg, 2017. "Stock assessment and end-to-end ecosystem models alter dynamics of fisheries data," PLOS ONE, Public Library of Science, vol. 12(2), pages 1-11, February.
    3. Dugan, P. & Delaporte, A. & Andrew, N. & O'Keefe, M. & Welcomme,R. & UNEP & The WorldFish Center, 2010. "Blue harvest: inland fisheries as an ecosystem service," Monographs, The WorldFish Center, number 39222, April.
    4. Alexandre A.F. Rivas & James R. Kahn & Carlos Edwar Freitas & Lawrence E. Hurd & Gregory Cooper, 2013. "The Role of Payments for Ecological Services in the Sustainable Development and Environmental Preservation of the Rainforest: A Case Study of Barcelos, Amazonas, BR," International Journal of Social Ecology and Sustainable Development (IJSESD), IGI Global, vol. 4(3), pages 13-27, July.
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    6. James Randall Kahn & Carlos Edwar Freitas & Miguel Petrere, 2014. "False Shades of Green: The Case of Brazilian Amazonian Hydropower," Energies, MDPI, vol. 7(9), pages 1-20, September.
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    1. Andres Camilo Castaño-Barreto & Carlos Alberto Jaramillo-Cruz & Raul Andres Molina Benavides & Alberto Stanislao Atzori, 2020. "Scenarios of Sustainable Fishing in the Zapatosa Marsh (Colombia) Simulated with a System Dynamics Model," Sustainability, MDPI, vol. 12(8), pages 1-22, April.

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