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dc.contributor.authorDíaz, P.A. (Patricio Andrés) 
dc.contributor.authorRuiz-Villarreal, M. (Manuel) 
dc.contributor.authorPazos, Y. (Yolanda)
dc.contributor.authorMoita, M.T. (María Teresa)
dc.contributor.authorReguera, B. (Beatriz) 
dc.coverage.temporal1985–2014es_ES
dc.date.accessioned2016-10-05T10:55:54Z
dc.date.available2016-10-05T10:55:54Z
dc.date.issued2016-03
dc.identifier.issn1568-9883*
dc.identifier.urihttp://hdl.handle.net/10508/10618
dc.description.abstractDinophysis acuta is a frequent seasonal lipophilic toxin producer in European Atlantic coastal waters associated with thermal stratification. In the Galician Rías, populations of D. acuta with their epicentre located off Aveiro (northern Portugal), typically co-occur with and follow those of Dinophysis acuminata during the upwelling transition (early autumn) as a result of longshore transport. During hotter than average summers, D. acuta blooms also occur in August in the Rías, when they replace D. acuminata. Here we examined a 30-year (1985–2014) time series of D. acuta from samples collected by the same method in the Galician Rías. Our main objective was to identify patterns of distribution and their relation with climate variability, and to explain the exceptional summer blooms of D. acuta in 1989–1990. A dome-shaped relationship was found between summer upwelling intensity and D. acuta blooms; cell maxima were associated with conditions where the balance between upwelling intensity and heating, leading to deepened thermoclines, combined with tidal phase (3 days after neap tides) created windows of opportunity for this species. The application of a generalized additive model based on biological (D. acuta inoculum) and environmental predictors (Cumulative June–August upwelling CUIJJA, average June–August SSTJJA and tidal range) explained more than 70% of the deviance for the exceptional summer blooms of D. acuta, through a combination of moderate (35,000–50,000 m3 s−1 km−1) summer upwelling (CUIJJA), thermal stratification (SSTJJA > 17 °C) and moderate tidal range (∼2.5 m), provided D. acuta cells (inoculum) were present in July. There was no evidence of increasing trends in D. acuta bloom frequency/intensity nor a clear relationship with NAO or other long-term climatic cycles. Instead, the exceptional summer blooms of 1989–1990 appeared linked to extreme hydroclimatic anomalies (high positive anomalies in SST and NAO index), which affected most of the European Atlantic coast.es_ES
dc.language.isoenges_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectDinophysis acutaes_ES
dc.subjectClimate anomalieses_ES
dc.subjectThermal stratificationes_ES
dc.subjectUpwelling intensityes_ES
dc.subjectExceptional summer bloomses_ES
dc.subjectGalician Ríases_ES
dc.titleClimate variability and Dinophysis acuta blooms in an upwelling systemes_ES
dc.typearticlees_ES
dc.identifier.bibliographicCitationHarmful Algae, 53. 2016: 145-159*
dc.description.versionVersión del editores_ES
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1568988315001651es_ES
dc.publisher.centreCentro Oceanográfico de A Coruñaes_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/261860es_ES
dc.rights.accessRightsopenAccesses_ES
dc.description.impact3,0830*
dc.identifier.doi10.1016/j.hal.2015.11.007
dc.coverage.spatialStudyAtlantic Oceanen_US
dc.coverage.spatialStudyCentral Atlanticen_US
dc.coverage.spatialStudyEastern Central Atlanticen_US
dc.coverage.spatialStudyNorthwest Spanishen_US
dc.coverage.spatialStudyIberian shelfen_US


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    Atribución-NoComercial-SinDerivadas 3.0 España
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