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Supply of crab larvae to an estuary in the eastern Atlantic upwelling system exhibits predictable and haphazard variation at different temporal scales

dc.contributor.authorDomingues, Carla P.
dc.contributor.authorAlmeida, Maria Joao
dc.contributor.authorDubert, Jesus
dc.contributor.authorNolasco, Rita
dc.contributor.authorCordeiro, Nuno
dc.contributor.authorWaap, Silke
dc.contributor.authorSequeira, Ana
dc.contributor.authorTavares, Sofia
dc.contributor.authorQueiroga, Henrique
dc.date.accessioned2018-12-07T14:58:32Z
dc.date.available2018-12-07T14:58:32Z
dc.date.issued2011
dc.description.abstractWe measured variability in daily supply levels of shore crab megalopae in an estuary on the northwest Portuguese coast, Ria de Aveiro, located in the eastern Atlantic upwelling system. The 5 yr study covered the shore crab larval season (generally February to July) in 2002 and from 2006 to 2009. We addressed the possible effects of wind-and tide-driven circulation, number of flood hours during darkness, and chlorophyll a concentration in coastal waters on larval supply variation. Megalopae supply measured over the years was an episodic phenomenon, and observations showed some predictable and haphazard patterns. In some episodes, supply was highest around spring tides and was enhanced by southerly winds, as predicted, although not all episodes fitted this pattern. The relationships between supply levels and number of flood hours during darkness or chlorophyll a concentration were ambiguous throughout the time series, although in some years increased levels of supply were positively correlated with number of flood hours during the night. The analysis of multiple years conducted in this study showed that shore crab megalopae supply patterns to Ria de Aveiro are more variable than previously assumed, suggesting the participation of several delivery mechanisms that vary within and among years. However, a proportion of supply variation exists that cannot be explained by the mechanisms we propose.
dc.identifier.doi10.3354/meps08992
dc.identifier.issn0171-8630
dc.identifier.issn1616-1599
dc.identifier.urihttp://hdl.handle.net/10400.1/12077
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInter-Research
dc.relationGENÉTICA POPULACIONAL DE C. MAENAS: OCEONOGRAFIA E DISPERSÃO LARVAR
dc.relationConnect - Connectivity of marine populations assessed with genetic and numerical modelling tools
dc.subjectCross-shelf transport
dc.subjectFlood tide transport
dc.subjectVertical migration
dc.subjectCarcinus maenas
dc.subjectBlue crab
dc.subjectBrachyuran megalopae
dc.subjectCallinectes sapidus
dc.subjectShoreward transport
dc.subjectWestern Iberia
dc.subjectIntertidal barnacles
dc.titleSupply of crab larvae to an estuary in the eastern Atlantic upwelling system exhibits predictable and haphazard variation at different temporal scales
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleGENÉTICA POPULACIONAL DE C. MAENAS: OCEONOGRAFIA E DISPERSÃO LARVAR
oaire.awardTitleConnect - Connectivity of marine populations assessed with genetic and numerical modelling tools
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F21593%2F2005/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FBIA-BDE%2F65425%2F2006/PT
oaire.citation.endPage124
oaire.citation.startPage113
oaire.citation.titleMarine Ecology Progress Series
oaire.citation.volume425
oaire.fundingStream5876-PPCDTI
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
relation.isProjectOfPublicationd25351fe-16ae-4421-abe2-31e4d8f241b0
relation.isProjectOfPublicationd99f5f94-7140-4140-9924-3f7d2abea302
relation.isProjectOfPublication.latestForDiscoveryd99f5f94-7140-4140-9924-3f7d2abea302

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