Consistency of Stock Assessment and Evaluation of Fisheries Management for European Fish Stocks, 1983-1995
D. Gascuel, G. Fontenelle, C. Maguer, and A. Biseau
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This paper looks at the actual catches of eight European demersal fish stocks back to 1983 in reference to the annual assessment and recommendations issued by the European Community management system. We used all estimates obtained at all steps of the process (catch data for any year n, VPA assessment, TACs for any (n+1) year, and respective actual catches). From this, we calculated ratios linking expected and actual values of demographic parameters of stocks. These ratios highlight discrepancies along the TAC setting process and their induced outcomes for exploitation and management. The scientific diagnoses obviously are pessimistic for saithe in West Scotland but not always pessimistic enough given the actual state of the stocks. Conversely, for whiting, the assessment and recommendations lead to an optimistic diagnosis but not optimistic enough. Additive uncertainty together with too much trust in sophistication of assessment methods, associated with bargaining along the whole process, may explain a low performance of the management system of some European fish stocks.
- Item number: AK-SG-98-01ay
- Year: 1998
- DOI: https://doi.org/10.4027/fsam.1998.51