Resolving Hjort's Dilemma How Is Recruitment Related to Spawning Stock Biomass in Marins Fish?
Type | Article | ||||||||||||
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Date | 2014-12 | ||||||||||||
Language | English | ||||||||||||
Author(s) | Cury Philippe M.1, 2, Fromentin Jean-Marc2, 3, Figuet Sarah1, 2, Bonhommeau Sylvain2, 3 | ||||||||||||
Affiliation(s) | 1 : Institut de Recherche pour le Développement, Sète, France 2 : Centre de Recherche Halieutique Méditerranéenne et Tropicale, Sète, France 3 : Institut français de recherche pour l'exploitation de la mer (IFREMER), Sète, France |
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Source | Oceanography (1042-8275) (The Oceanography Society), 2014-12 , Vol. 27 , N. 4 , P. 42-47 | ||||||||||||
DOI | 10.5670/oceanog.2014.85 | ||||||||||||
WOS© Times Cited | 46 | ||||||||||||
Abstract | The relationship between spawning fish abundance and the number of offspring, the so-called stock-recruitment relationship, is crucial for fisheries management and conservation measures. Using the most comprehensive data set ever assembled, we quantify this relationship for 211 fish stocks worldwide, revealing a global pattern with a pervasive asymptotic shape that shows increasing recruitment reaching an upper limit for values around half to two-thirds of parental biomass. This corroborates previous theoretical and modeling results. However, parental biomass is a predictor for only 5% to 15% of the variance in recruitment, demonstrating the weak predictive power of the stock-recruitment relationship in marine fish populations. Thus, there is a need to move rapidly toward models that integrate environmental conditions and species interactions in fisheries stock assessment and management, as suggested by Johan Hjort 100 years ago. | ||||||||||||
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