Quality of the Surveys Information in Relation with the Greenland Halibut Assessment of Subarea 2 and Divisions 3KLMNO

• Main Authors: González-Troncoso, D. (Diana), González-Costas, F. (Fernando)
• Format: Report
• Language: English
• Published: Centro Oceanográfico de Vigo 2006
• Subjects: Greenland; North Atlantic; Northwest Atlantic
• Online Access: http://hdl.handle.net/10508/606

The aim of this paper is to provide a study of the quality of the surveys information in relation with the Greenland halibut assessment of the NAFO Subarea 2 and Divisions 3KLMNO. The surveys abundance correlation within surveys, between surveys and XSA showed that the surveys had many difficulties to track ages older than 6 years. For Flemish Cap survey and Canadian Spring Survey, the problem to track these ages could be principally the depth coverage of the surveys, but for the other surveys this lack of tracking could be due to different reasons as age reading inconsistencies and changes in catchability of these ages in the surveys.