A comparison between observed and unobserved vessels data of the Spanish Northeast Atlantic Bottom Trawl Fisheries

To assess the possible bias of the observers data of the bottom trawl Spanish fisheries for the last three years, 2003 – 2005, a comparison between logbooks and first sale notes information and observed vessels data are made. Logbooks and first sale notes, provided by fishermen associations, and the...

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Bibliographic Details
Main Authors: Carbonell, Ana, González-Herraiz, Isabel, Punzón, Antonio, Ruiz, Jon, Valls-Mir, María, Pérez-Contreras, María Nélida
Format: Still Image
Language:English
Published: 2007
Subjects:
Online Access:http://hdl.handle.net/10508/9019
http://hdl.handle.net/10261/328616
Description
Summary:To assess the possible bias of the observers data of the bottom trawl Spanish fisheries for the last three years, 2003 – 2005, a comparison between logbooks and first sale notes information and observed vessels data are made. Logbooks and first sale notes, provided by fishermen associations, and the retained catch estimations, made onboard by the observers monitoring programme provide a data collection that should be integrated