Percorrer por autor "Quinteiro, Marta Mosquera"
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- Application of a control system based on fuzzy logic to the management of fisheries resourcesPublication . Quinteiro, Marta Mosquera; Murta, AlbertoThe overfishing and depletion of the fishing stocks motivated the use of management strategy evaluation and management procedures, in order to keep the fish stock above a healthy level while maintaining high catches. The management procedure consists of an operating model and a harvest control rule (HCR), and its performance is related to the chosen reference points, the stock assessment procedures and the monitoring regime. Fuzzy set theory was used because it provides a natural way to deal with imprecision in the definition of a group, providing balanced results when applied to HCR. The aim of this work is to compare the performance of 2 classic harvest control rules and their translation into fuzzy logic. To achieve this goal a fish stock was built as well as a fishery and stock assessment, and 60-year projections were performed, with and without variability, resulting in a general improvement in the stock health and in mean yields.