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Environmental influence on commercial fishery landings of small pelagic fish in Portugal

2016-03Journal article Restricted access
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dc.contributor.authorTeixeira, Célia M.
dc.contributor.authorGamito, Rita
dc.contributor.authorMiguel de Sousa Leitão, Francisco
dc.contributor.authorMurta, Alberto G.
dc.contributor.authorCabral, Henrique N.
dc.contributor.authorErzini, Karim
dc.contributor.authorCosta, Maria José
dc.date.accessioned2016-12-23T11:18:16Z
dc.date.available2016-12-23T11:18:16Z
dc.date.issued2016-03
dc.description.abstractSmall pelagic fishes are particularly abundant in areas with high environmental variability (zones of coastal upwelling and areas of tidal mixing and river discharge), and because of this, their abundance suffers large inter-annual and inter-decadal fluctuations. In Portugal, the most important species in terms of landings are European sardine, Atlantic horse mackerel and Atlantic chub mackerel. Small pelagic fish landings account for 62.8 % of the total fish biomass and represent 32.7 % of the economical value of all catches. We have investigated trends in landings of these small pelagic fishes and detected the effects of environmental factors in this fishery. In order to explain the variability of landings of small pelagic fishes, we have used official landings (1965-2012) for trawling and purse seine fisheries and applied generalized linear models, using the North Atlantic Oscillation index (NAO) (annual and winter NAO index), sea surface temperature (SST), wind data (strength and North-South and East-West wind components) and rainfall, as explanatory variables. Regression analysis was used to describe the relationship between landings and SST. The models explained between 50.16 and 51.07 % of the variability of the LPUE, with the most important factors being winter NAO index, SST and wind strength. The LPUE of European sardine and Atlantic horse mackerel was negatively correlated with SST, and LPUE of Atlantic chub mackerel was positively correlated with SST. The use of landings of three important species of small pelagic fishes allowed the detection of variations in landings associated with changes in sea water temperature and NAO index.
dc.identifier.doi10.1007/s10113-015-0786-1
dc.identifier.issn1436-3798
dc.identifier.otherAUT: KER00534;
dc.identifier.urihttp://hdl.handle.net/10400.1/8877
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Verlag
dc.relation.isbasedonWOS:000370178000011
dc.subjectSmall pelagic fishes
dc.subjectFisheries
dc.subjectClimate change
dc.subjectCommercial landings
dc.subjectPortugal
dc.titleEnvironmental influence on commercial fishery landings of small pelagic fish in Portugal
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage716
oaire.citation.issue3
oaire.citation.startPage709
oaire.citation.titleRegional Environmental Change
oaire.citation.volume16
person.familyNameLeitão
person.familyNameErzini
person.givenNameFrancisco
person.givenNameKarim
person.identifier620214
person.identifier.ciencia-id3E1C-DBC2-42D5
person.identifier.ciencia-idD917-7133-341A
person.identifier.orcid0000-0003-4983-9782
person.identifier.orcid0000-0002-1411-0126
person.identifier.ridM-3980-2013
person.identifier.ridM-5216-2013
person.identifier.scopus-author-id7003991946
person.identifier.scopus-author-id7004015948
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublicationb138ce56-d033-450e-98a4-2bcb19f4a34e
relation.isAuthorOfPublicatione20f0e2d-3085-4c37-9e98-260dc9faddea
relation.isAuthorOfPublication.latestForDiscoverye20f0e2d-3085-4c37-9e98-260dc9faddea

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