Adecuación sostenible del arte de arrastre de la pesquería de gamba roja Aristeus antennatus (Risso, 1816) de Palamós
2017
Figueras Domènech, G.
The management of trawling in Mediterranean Sea is carried out with models of effort regulation, based on technical measures that limit the fishing capacity of the fleet. The poor state of the main demersal stocks shows that the measures taken so far have not been enough to avoid overexploitation of the fishing grounds. Under this concept, in order to preserve its main species, the red shrimp fishermen of Palamós have opted to manage their fishery by specific regulations, based on technical measures more restrictive than the general ones. Their next mission is to regulate the fishing gear, adapting its characteristics and dimensions, to guarantee a sustainable exploitation of the resource. The main objective of the present study is to obtain a set of tools in which the fishery management bodies can be supported when making decisions to limit the trawl gear’s size of each of the seventeen trawlers of the fishery. By analysing the relationship between the dimensions of the current fishing gears and the captures obtained by each of them, it has been possible to determine the catch capacity of each trawl gear, depending on its size. In the same way it was possible to estimate the fishing capacity of the fleet when focusing on the modification of the dimension of the trawl gear. The possible effects that different management scenarios can produce have been analysed, applying limitations to the physical parameters of the trawl net, or to the parameters obtained from theoretical calculations, concluding that the best way to regulate the fishing capacity of the fleet is with the limitation of the total dimension of the trawl gear, expressed in the resistance that it offers when being towed.
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