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An analysis of the fishing power concepts
Type de document
Publication
Date de publication
1977
Langue(s)
Français
Doc(s) complet(s)
Copyright:
Conseil international pour l'exploration de la mer
Auteur(s)
Laurec Alain
Source:
Journal du Conseil international pour l'exploration de la mer (Conseil international pour l'exploration de la mer), 1977 , Vol. 37 , N. 2 , P. 173-185
Thème(s)
Pêche
Mot-Clé(s)
Histoire Ifremer
Abstract
An analysis of the fishing power concepts leads to a distinction between local fishing power (at a given location). and overall fishing power. Overall fishing power takes into account the ability to detect and quickly exploit rich areas. In order to estimate local fishing power it is necessary to compare the catches of different ships operating in neighbouring areas. Such a comparison performed on two ships will give an estimate of their relative fishing powers. The closer the two ships are, the more reliable will be the estimate. A weighting function must be used, and this function is related to the spatial heterogeneity of the fish density. Such a function is provided by the variogram as defined by Matheron (1965). [NOT CONTROLLED OCR]
Comment citer ce document:
Laurec Alain (1977). Analyse et estimation des puissances de pêche. Journal du Conseil international pour l'exploration de la mer, 37(2), 173-185. Open Access version : http://archimer.ifremer.fr/doc/00000/5169/
Laurec Alain (1977). Analyse et estimation des puissances de pêche. Journal du Conseil international pour l'exploration de la mer, 37(2), 173-185. Open Access version : http://archimer.ifremer.fr/doc/00000/5169/
