Dealing with dynamics and uncertainty of small pelagic fisheries: bioeconomic analysis of manager’s responses to alternative management strategies
Small pelagic fisheries have been characterized by large fluctuations in abundance due to environ mental factors, harvest regimes, and reproduction patterns, among others. Given this complexity, the development of management schemes for sardine fisheries requires an evaluation of the impact of diffe...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | México |
| Institución: | Universidad Veracruzana |
| Repositorio: | Redalyc-UV |
| OAI Identifier: | oai:redalyc.org:47950143004 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=47950143004 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias de la Tierra risk uncertainty Pacific sardine Bioeconomic reference points precautionary management approach |
| Sumario: | Small pelagic fisheries have been characterized by large fluctuations in abundance due to environ mental factors, harvest regimes, and reproduction patterns, among others. Given this complexity, the development of management schemes for sardine fisheries requires an evaluation of the impact of different management strategies. The evalu ation of any management scheme would need to account for the uncertainty associated with the biological behavior of resource s and economic performance of the fisheries to predict changes in resource abundance through simulation of alternative scenario s. In this study, an age- structured dynamic bioeconomic model of the Pacific sardine ( Sardinops sagax ) fishery off the Baja California peninsula in Mexico was used. The model assessed the effect of changes in recruitment over several state variable s (biomass, net present value and catch). An analysis of risk and uncertainty allowed the identification of sensitive parameters ( natural mortality, price and catchability) and a precautionary approach was used to evaluate the response of decision-makers with different attitudes toward risk (adverse, neutral and prone) given different management scenarios, from open access to restrict ions in fishing effort. Incorporation of uncertainty and risk analyses into the assessment of the sardine fishery showed tha t management strategies that involve restrictions on fishing effort resulted in a lower probability (0-7, expressed in perce ntage) of exceeding limit reference points (LRPs) than those strategies that permit conditions of open access, or that aim for catch at maximum sustainable yield (MSY) and catch quotas (13-60% ). The analysis highlights the advantages of using an approach that in corporates risk and uncertainty for generating management strategies for pelagic fisheries with high exposure to uncerta in conditions. |
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