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Selectivity, pulse fishing and endogenous lifespan in Beverton-Holt models

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  • Da Rocha, José María
  • Gutiérrez Huerta, María José
  • Antelo, Luis T.

Abstract

Optimal management in a multi-cohort Beverton-Holt model with any number of age classes and imperfect selectivity is equivalent to finding the optimal fish lifespan by chosen fallow cycles. Optimal policy differs in two main ways from the optimal lifespan rule with perfect selectivity. First, weight gain is valued in terms of the whole population structure. Second, the cost of waiting is the interest rate adjusted for the increase in the pulse length. This point is especially relevant for assessing the role of selectivity. Imperfect selectivity reduces the optimal lifespan and the optimal pulse length. We illustrate our theoretical findings with a numerical example. Results obtained using global numerical methods select the optimal pulse length predicted by the optimal lifespan rule.

Suggested Citation

  • Da Rocha, José María & Gutiérrez Huerta, María José & Antelo, Luis T., 2012. "Selectivity, pulse fishing and endogenous lifespan in Beverton-Holt models," DFAEII Working Papers 2012-11, University of the Basque Country - Department of Foundations of Economic Analysis II.
  • Handle: RePEc:ehu:dfaeii:8768
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    Cited by:

    1. Da-Rocha, Jose-Maria & García-Cutrin, Javier & Gutierrez, Maria Jose & Touze, Julia, 2016. "A note on CES Preferences in Age-Structured Models," MPRA Paper 75298, University Library of Munich, Germany.
    2. Quaas, Martin F. & Requate, Till & Ruckes, Kirsten & Skonhoft, Anders & Vestergaard, Niels & Voss, Rudi, 2013. "Incentives for optimal management of age-structured fish populations," Resource and Energy Economics, Elsevier, vol. 35(2), pages 113-134.
    3. Ni, Yuanming & Steinshamn, Stein I., 2016. "Optimal fishing mortalities with age-structured bioeconomic model - a case of NEA mackerel," Discussion Papers 2016/9, Norwegian School of Economics, Department of Business and Management Science.
    4. Villasante, Sebastian & Pierce, Graham J. & Pita, Cristina & Guimeráns, César Pazos & Garcia Rodrigues, João & Antelo, Manel & Da Rocha, José María & Cutrín, Javier García & Hastie, Lee C. & Veiga, Pe, 2016. "Fishers' perceptions about the EU discards policy and its economic impact on small-scale fisheries in Galicia (North West Spain)," Ecological Economics, Elsevier, vol. 130(C), pages 130-138.
    5. Da Rocha, José María & Gutiérrez Huerta, María José & Villasante, Sebastián, 2013. "Economic Effects of Global Warming under Stock Growth Uncertainty: The European Sardine Fishery," DFAEII Working Papers DFAEII;2013-03, University of the Basque Country - Department of Foundations of Economic Analysis II.
    6. José-María Da-Rocha & Rosa Mato-Amboage, 2016. "On the Benefits of Including Age-Structure in Harvest Control Rules," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, pages 619-641.
    7. Da Rocha, José María & García-Cutrín, Javier & Gutiérrez Huerta, María José & Touza, Julia, 2015. "Reconciling yield stability with international fisheries agencies precautionary preferences: the role of non constant discount factors in age structured models," DFAEII Working Papers DFAEII;2015-02, University of the Basque Country - Department of Foundations of Economic Analysis II.

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    Keywords

    optimisation in age-structured models; pulse fishing;

    JEL classification:

    • O1 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development

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