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The role of environmental and fisheries multi-controls in white seabream (Diplodus sargus) artisanal fisheries in Portuguese coast

2016-07Journal article Restricted access
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dc.contributor.authorLeitão, Francisco
dc.contributor.authorBaptista, Vania
dc.contributor.authorTeodosio, Maria
dc.contributor.authorHughes, Samantha Jane
dc.contributor.authorVieira, Vasco
dc.contributor.authorChícharo, Luís
dc.date.accessioned2017-04-07T15:57:40Z
dc.date.available2017-04-07T15:57:40Z
dc.date.issued2016-07
dc.description.abstractEvaluating the effects of fishing and environmental factors on fish populations are fundamental tenets of fisheries science. In this study, we assess associations between environmental variables (sea surface temperature; North Atlantic Oscillation index; upwelling; wind magnitude; westerly winds; northerly winds; river discharge) and fishing variables (fishing effort) in Diplodus sagus catch rates accounting for regional analyses (northwest coast; southwest coast and Algarve-Algarve south coast). Different time series models for data fitting (multi-model approach) were used. The models were lagged, according to species fishing recruitment age based on the hypothesis that fisheries catches depend on larvae recruitment and survivorship. D. sargus catch rates across areas were unrelated to fishing effort but correlated to environmental variables, with seasonal events explaining much of the variability in trends. On the northwestern coast, the catch rates were mainly set by sea surface temperature (SST) and wind magnitude; however, southwestern coast catch rates were set by NAO winter. On the south coast, only one statistical model (SST, upwelling and westerly winds) associated spring conditions with D. sargus catch rates. The multi-model approach revealed autumn, winter and spring seasonal effects to be related with northwest, southwest and Algarve coastal catch rates, respectively, indicating a possible coastal longitudinal gradient related with given periods of spawning and larval availability. The metadata analysis yielded different results from the regional analyses. In summary, marine resource management should take regional environment characteristics and variability into account when determining sustainable catch rates in given areas for species with high habitat site fidelity.
dc.identifier.doi10.1007/s10113-014-0726-5
dc.identifier.issn1436-3798
dc.identifier.otherAUT: MCH00377; LCH00360;
dc.identifier.urihttp://hdl.handle.net/10400.1/9783
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Verlag
dc.relation.isbasedonWOS:000368114700014
dc.titleThe role of environmental and fisheries multi-controls in white seabream (Diplodus sargus) artisanal fisheries in Portuguese coast
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage176
oaire.citation.issue1
oaire.citation.startPage163
oaire.citation.titleRegional Environmental Change
oaire.citation.volume16
person.familyNameLeitão
person.familyNameBaptista
person.familyNameTeodosio
person.familyNameChicharo
person.givenNameFrancisco
person.givenNameVânia
person.givenNameMaria
person.givenNameLuis
person.identifier620214
person.identifier479502
person.identifier.ciencia-id3E1C-DBC2-42D5
person.identifier.ciencia-id0C1F-4F1B-256B
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.ciencia-id6716-EE1C-B995
person.identifier.orcid0000-0003-4983-9782
person.identifier.orcid0000-0002-1428-3334
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0002-4933-2300
person.identifier.ridM-3980-2013
person.identifier.ridB-5077-2013
person.identifier.scopus-author-id7003991946
person.identifier.scopus-author-id55820032600
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id6602881426
rcaap.rightsrestrictedAccess
rcaap.typearticle
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relation.isAuthorOfPublicationf8ce670b-477c-4002-97de-1950c5a7d3c2
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relation.isAuthorOfPublication.latestForDiscoveryf8ce670b-477c-4002-97de-1950c5a7d3c2

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