A study of Spanish Greenland halibut commercial effort and CPUE in 3LMNO using GIS with comparisons to the Spanish Div. 3NO survey and EU Flemish Cap survey catches
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AuthorsGonzález-Troncoso, D.M. (Diana María); Sacau-Cuadrado, M.M. (María del Mar); González-Costas, F. (Fernando)
An analysis of commercial CPUEs of Spanish commercial Greenland halibut fishery at depths of more than 700 meters is presented in this paper. We use percentage of effort from NAFO observers and CPUEs from IEO (Instituto Español de Oceanografía) observers. A GIS analysis was used in order to see how the effort is distributed. From 2005 to 2006 the CPUEs experimented a high increase. In recent years the effort of the Spanish fleet has decreased substantially and remained mostly around the Northwest of Div. 3L and North of Flemish Pass. We compare these data with the 3NO Spanish survey and the EU Flemish Cap survey data. Results from surveys do not reflect this increase in the commercial values.
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