Journal Article

Framework of stock-recovery strategies: analyses of factors affecting success and failure

Cornelius Hammer, Christian von Dorrien, Christopher C. E. Hopkins, Fritz W. Köster, Einar M. Nilssen, Michael St John and Douglas C. Wilson

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 67, issue 9, pages 1849-1855
Published in print December 2010 | ISSN: 1054-3139
Published online August 2010 | e-ISSN: 1095-9289 | DOI: http://dx.doi.org/10.1093/icesjms/fsq122
Framework of stock-recovery strategies: analyses of factors affecting success and failure

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Hammer, C., von Dorrien, C., Hopkins, C. C. E., Köster, F. W., Nilssen, E. M., St John, M., and Wilson, D. C. 2010. Framework of stock-recovery strategies: analyses of factors affecting success and failure. – ICES Journal of Marine Science, 67: 1849–1855.

The EU FP6 UNCOVER project was aimed at producing a rational scientific basis for developing recovery strategies for some ecologically and socio-economically important fish stocks/fisheries in European seas. The immediate objectives were to identify changes experienced during stock depletion/collapses, to understand prospects for recovery, to enhance the scientific understanding of the mechanisms of recovery, and to formulate recommendations on how best to implement long-term management/recovery plans. We extended an earlier analysis conducted within the project of 13 performance criteria in relation to the recovery of more than 30 fish stocks/fisheries worldwide by multivariate exploratory analysis (canonical correspondence analysis), followed by model building [discriminant analysis (DA)] to quantify the relative importance of key performance criteria, singly or combined. Using the existing database, DA indicated that the four best additive predictors of successful recovery were “rapid reduction in fishing mortality”, “environmental conditions during the recovery period”, “life-history characteristics” of the target stock, and “management performance criteria”. The model classified the status “recovered” and “non-recovered” assigned originally with nearly 100% accuracy.

Keywords: management strategies; performance criteria; recovery strategies; stock decline

Journal Article.  5982 words.  Illustrated.

Subjects: Environmental Science ; Marine and Estuarine Biology

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