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Temperature and food-mediated variability of European Atlantic sardine recruitment

2017-12Journal article Restricted access
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dc.contributor.authorGarrido, Susana
dc.contributor.authorSilva, Alexandra
dc.contributor.authorMarques, Vitor
dc.contributor.authorFigueiredo, Ivone
dc.contributor.authorBryere, Philippe
dc.contributor.authorMangin, Antoine
dc.contributor.authorSantos, A. Miguel P.
dc.date.accessioned2019-11-20T15:07:09Z
dc.date.available2019-11-20T15:07:09Z
dc.date.issued2017-12
dc.description.abstractThe influence of the environmental conditions during larval development on the resulting recruitment strength was investigated for European sardine (Sardina pilchardus) at Atlanto-Iberian waters. Satellite-derived Sea Surface Temperature (SST) and Chlorophyll-a concentration (Chla) data from the previous spawning seasons (January to March/April and October to December of the previous year) were related to recruitment success data in the main recruitment hotspots. Recruitment data was taken from yearly acoustic scientific cruises and from the ICES recruitment index estimated by an age-structured model for the entire stock. A linear discriminant analysis model using SST, Chla, and the abundance of spawners during the spawning season identified years of high and low recruitment for all the recruitment hotspots with an accuracy of >= 79%. In general, high recruitment years were associated with high Chla and low SST, although the most important variables to discriminate between the groups were area-specific. High recruitment years were mostly related to high food availability (Chla), particularly during the last quarter of the previous year. In Western Iberia and in the Gulf of Cadiz, high recruitment years were also associated to lower SST, whereas in the Bay of Biscay, where SST during the winter was generally below the optimal range approximate to 11-12 degrees C for sardine larval development, higher recruitment was associated with high SST. For ICES data of the southern European sardine stock, lower SST and higher Chla during the last quarter of the previous year were associated with high recruitment years and SST alone was able to discriminate between the two recruitment groups with 73% accuracy. Although the time-series of available data are still small, these significant relationships are consistent with field and laboratory studies relating larval growth and mortality with main environmental drivers. These relationships should be further investigated in the following years to evaluate if they can be used to construct reliable indicators to predict the level of recruitment and abundance with sufficient advance to help in the management of this important fishing resource.
dc.description.sponsorshipEuropean Commissionapos;s Seventh Framework Programme under SAFI - quot;Decision Support Services for our Aquaculture and Fisheries Sectorsquot
dc.description.sponsorshipFCT Post-Doctoral Fellowship [SFRH/BPD/105419/2014]
dc.description.sponsorshipInvestigador FCT Program [IF/01546/2015]
dc.description.sponsorship[UID/MAR/04292/2013]
dc.identifier.doi10.1016/j.pocean.2017.10.006
dc.identifier.issn0079-6611
dc.identifier.urihttp://hdl.handle.net/10400.1/12906
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPergamon-Elsevier Science Ltd
dc.relationSupport to Aquaculture and Fishery Industry
dc.relationMARE - Marine and Environmental Sciences Centre
dc.subjectSmall pelagic fish
dc.subjectPilchardus larvae
dc.subjectGeographic variability
dc.subjectPortugal
dc.subjectDynamics
dc.subjectFisheries
dc.subjectEcosystem
dc.subjectWaters
dc.subjectDiet
dc.subjectPopulations
dc.titleTemperature and food-mediated variability of European Atlantic sardine recruitment
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSupport to Aquaculture and Fishery Industry
oaire.awardTitleMARE - Marine and Environmental Sciences Centre
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/607155/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04326%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAR%2F04292%2F2013/PT
oaire.citation.endPage275
oaire.citation.startPage267
oaire.citation.titleProgress in Oceanography
oaire.citation.volume159
oaire.fundingStreamFP7
oaire.fundingStream5876
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSantos
person.givenNameA. Miguel P.
person.identifier290283
person.identifier.ciencia-id541E-93D0-BFC3
person.identifier.orcid0000-0001-9401-3504
person.identifier.ridG-6030-2011
person.identifier.scopus-author-id25926746100
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication847a80b0-7a6f-4b19-baea-4514c6908f65
relation.isAuthorOfPublication.latestForDiscovery847a80b0-7a6f-4b19-baea-4514c6908f65
relation.isProjectOfPublication2860551e-3856-4806-b3d8-2e32fda802c6
relation.isProjectOfPublication868b4818-3efa-4edb-9202-c464d64fd38f
relation.isProjectOfPublication10d45e59-7729-4f62-9521-f5adc560d562
relation.isProjectOfPublication.latestForDiscovery2860551e-3856-4806-b3d8-2e32fda802c6

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