Bioeconomic Dynamic Modelling of the Chilean Southern Demersal Fishery Public Deposited

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  • The demersal fishery of southern Chile is a complex system including multiple species, fishing fleets and markets. Fishing activity is conducted under a rights-based system for southern hake (Merluccius australis) and hoki (Macroronus magellanicus), where a TAC is allocated in an even manner among fleets and operators. New management approaches not only call for the need of the simultaneous consideration of biological, technologic, economic, social, legal and institutional factors but also, stakeholders perceptions and interests are becoming increasingly relevant for decision making. In spite of the undeniable importance for stakeholder inclusion in fisheries management, their perception of the system status and expectations are frequently partial and biased by short term needs and interests. Thus, information on expected impacts of alternative management measures are a valuable guiding input to improve stakeholder perception. This paper, therefore explores the value of dynamic simulation model in providing illustrative information on bioeconomic impacts to the fishery system from alternative management measures. The dynamic simulation model is based on two main modules. A biologic module depicting the fish population dynamics, considering recruitment based on Beverton and Holt function. A bioeconomic module depicting fleet dynamics based investment functions by Clark et al. (1979) Munro and Munro (1998) and catch per unit of effort proportional to biomass. The model outputs are the species biomass, fleet size, effort level, fleet and vessel net benefits presented on a year basis. Fishery and fleet cumulative NPVs are also presented.
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  • Cerda-D'Amico, Rene, Exequiel Gonzalez Poblete and Renato Molina Hernandez. 2010. Bioeconomic Dynamic Modelling of the Chilean Southern Demersal Fishery. 11 pages. In: Proceedings of the Fifteenth Biennial Conference of the International Institute of Fisheries Economics & Trade, July 13-16, 2010, Montpellier, France: Economics of Fish Resources and Aquatic Ecosystems: Balancing Uses, Balancing Costs. Compiled by Ann L. Shriver. International Institute of Fisheries Economics & Trade, Corvallis, Oregon, USA, 2010.
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