Journal Article

Is a management framework based on spawning-stock biomass indicators sustainable? A viability approach

Michel De Lara, Luc Doyen, Thérèse Guilbaud and Marie-Joëlle Rochet

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 64, issue 4, pages 761-767
Published in print May 2007 | ISSN: 1054-3139
Published online April 2007 | e-ISSN: 1095-9289 | DOI: http://dx.doi.org/10.1093/icesjms/fsm024
Is a management framework based on spawning-stock biomass indicators sustainable? A viability approach

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De Lara, M., Doyen, L., Guilbaud, Th., and Rochet, M-J. 2007. Is a management framework based on spawning-stock biomass indicators sustainable? A viability approach. – ICES Journal of Marine Science, 64: 761–767: 000–000.

Fisheries management agencies have to drive resources on sustainable paths, i.e. within defined boundaries for an indefinite time. The viable-control approach is proposed as a relevant method to deal with sustainability. We analyse the ICES precautionary approach (PA) by means of the notion of viability domain, and provide a mathematical test for sustainability. It is found that the PA based on spawning-stock biomass (SSB) and fishing mortality (F) indicators is sustainable only when recruits make a significant contribution to SSB. In this case, advice based upon SSB, with an appropriate reference point, is sufficient to ensure sustainability. In all other cases, SSB is not a sufficient metric of stock productivity and must be complemented with other management indicators to ensure sustainability. The approach is illustrated with numerical applications to the northern hake and Bay of Biscay anchovy.

Keywords: ICES precautionary approach; indicators; sustainable management; viability

Journal Article.  4004 words.  Illustrated.

Subjects: Environmental Science ; Marine and Estuarine Biology

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