@article{ ISI:000284429600013,
Author = {Brunel, Thomas},
Title = {{Age-structure-dependent recruitment: a meta-analysis applied to
   Northeast Atlantic fish stocks}},
Journal = {{ICES JOURNAL OF MARINE SCIENCE}},
Year = {{2010}},
Volume = {{67}},
Number = {{9}},
Pages = {{1921-1930}},
Month = {{DEC}},
Abstract = {{Exploitation alters the age structure of fish stocks. Several
   stock-specific studies have suggested that changes in the age structure
   might have consequences for subsequent recruitment, but the evidence is
   not universal. To investigate how common such effects are among 39
   Northeast Atlantic fish stocks, relationships were tested between age
   structure (spawner mean age, age diversity, and proportion of recruit
   spawners) and recruitment (number of recruits, sensitivity to
   environment, and recruitment variability). Significant correlations in
   the expected direction were observed for a few stocks, but not for the
   majority; significant correlations in the opposite direction were also
   found. Meta-analyses combining the stock-level tests revealed that none
   of the effects were significant overall. However, effects were
   significant for some species (cod, haddock, and plaice) and indices. The
   low variability in the age structure might explain the absence of
   significant effects for individual stocks. Other reasons could be the
   absence of a biological basis (reproductive characteristics not
   dependent on age) or the stronger influence of environmental variability
   than of age structure on recruitment.}},
Publisher = {{OXFORD UNIV PRESS}},
Address = {{GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Brunel, T (Reprint Author), Wageningen IMARES, POB 68, NL-1970 AB Ijmuiden, Netherlands.
   Wageningen IMARES, NL-1970 AB Ijmuiden, Netherlands.}},
DOI = {{10.1093/icesjms/fsq032}},
ISSN = {{1054-3139}},
EISSN = {{1095-9289}},
Keywords = {{maternal effects; recruitment; reproductive potential; temperature
   effect; variability}},
Keywords-Plus = {{COD GADUS-MORHUA; PLEURONECTES-PLATESSA L; SPAWNING STOCK; REPRODUCTIVE
   SUCCESS; SPATIAL-DISTRIBUTION; MATERNAL AGE; BALTIC COD; SIZE;
   POPULATION; MANAGEMENT}},
Research-Areas = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Web-of-Science-Categories  = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Author-Email = {{thomas.brunel@wur.nl}},
ResearcherID-Numbers = {{Brunel, Thomas/B-8435-2009}},
Funding-Acknowledgement = {{Dutch Ministry of Agriculture, Nature Conservation and Food Quality}},
Funding-Text = {{I thank Mark Dickey-Collas, Joanne Morgan, Adriaan Rijnsdorp, and Peter
   Wright for their useful comments on the manuscript. The study was
   supported by the strategic research programme ``Sustainable spatial
   development of ecosystems, landscapes, seas and regions{''} funded by
   the Dutch Ministry of Agriculture, Nature Conservation and Food Quality.}},
Number-of-Cited-References = {{49}},
Times-Cited = {{32}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{20}},
Journal-ISO = {{ICES J. Mar. Sci.}},
Doc-Delivery-Number = {{682UX}},
Unique-ID = {{ISI:000284429600013}},
OA = {{No}},
DA = {{2017-08-17}},
}

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To investigate how common such effects are among 39 Northeast Atlantic fish stocks, relationships were tested between age structure (spawner mean age, age diversity, and proportion of recruit spawners) and recruitment (number of recruits, sensitivity to environment, and recruitment variability). Significant correlations in the expected direction were observed for a few stocks, but not for the majority; significant correlations in the opposite direction were also found. Meta-analyses combining the stock-level tests revealed that none of the effects were significant overall. However, effects were significant for some species (cod, haddock, and plaice) and indices. The low variability in the age structure might explain the absence of significant effects for individual stocks. 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Several\n stock-specific studies have suggested that changes in the age structure\n might have consequences for subsequent recruitment, but the evidence is\n not universal. To investigate how common such effects are among 39\n Northeast Atlantic fish stocks, relationships were tested between age\n structure (spawner mean age, age diversity, and proportion of recruit\n spawners) and recruitment (number of recruits, sensitivity to\n environment, and recruitment variability). Significant correlations in\n the expected direction were observed for a few stocks, but not for the\n majority; significant correlations in the opposite direction were also\n found. Meta-analyses combining the stock-level tests revealed that none\n of the effects were significant overall. However, effects were\n significant for some species (cod, haddock, and plaice) and indices. The\n low variability in the age structure might explain the absence of\n significant effects for individual stocks. 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