Analyse des données d'observations embarquées de l'étude cabillaud en VIId - IVc

Scientific report of FEP cod study carried out in Eastern English Channet and southern North sea. This study as been driven by North, Pas-de-Calais/Picardie French Fishery Committee and Ifremer was technical expert (methodology, analysis). From October 2008 to May 20009, 92 trips corresponding to 249 days at sea were observed. Discarded part is globally important with 75% in weight and 80% in number for the observed trips, but the discards are very variable during time, even in the same Métier. The raising of the catches to the fleet using a two levels estimator, by quarter, by Métier and by ICES division, gives low precise estimations with CVs meanly higher than 20%. These results are nevertheless plausible if we compare with elevation of landings which are close to official figures. The authors thank the fishing industry, Sophie Léonardi and the observers, the voluntary fishermen and Ifremer Boulogne.