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dc.contributor.authorGuadayol, Òscar-
dc.contributor.authorPeters, Francesc-
dc.contributor.authorMarrasé, Cèlia-
dc.contributor.authorGasol, Josep M.-
dc.contributor.authorRoldán, Cristina-
dc.contributor.authorBerdalet, Elisa-
dc.contributor.authorMassana, Ramon-
dc.contributor.authorSabata, Anna-
dc.identifier.citationMarine Ecology Progress Series 381: 139–155 (2009)-
dc.description.abstractIn temperate coastal zones, episodic meteorological forcing can have a strong impact on the classical seasonal phytoplankton succession. Episodes of continental runoff and wind storms involve nutrient enrichment and turbulence, 2 factors that can promote primary production and alter the planktonic community species composition and size structure. We determined the joint influence of these 2 variables on the osmotrophic plankton of an oligotrophic NW Mediterranean open bay. We used an 8 yr long time series of monthly physical, chemical and biological water-column parameters, and we looked for correlations between these and several meteorological and physical high- frequency time series through cross-correlation analyses. Influence of river runoff in this particular location was found to be very important for phytoplankton dynamics, whereas no immediate response of bacterioplankton was detected. Resuspension events caused by waves had a secondary importance. Cross correlations allowed defining a sequence of responses to these types of forcing, from changes in water turbidity and salinity, to increases in phytoplankton and bacteria abundances through nutrient enrichments. The maximum response of the ecosystem in terms of chlorophyll a concentration lagged nutrient enrichment events by about 1 wk. A more detailed analysis was performed between June 2003 and June 2004, a period characterised by an intense drought in summer and by 6 strong meteorological events afterwards. The increase in the frequency of meteorological events during this period drove the system from heterotrophy to autotrophy. Our data stress the importance of episodic meteorological events in coastal planktonic communities.es_ES
dc.description.sponsorshipThe present study was supported by the EU Project NTAP (EVK3-CT-2000-00022) and by the Spanish projects VARITEC (REN2003-08071-C02-01/MAR) and TURFI (REN2002-01591/MAR). The Blanes Bay Microbial Observatory has been supported by the EU Project BASICS (EVK3-CT-2002-00078) and by the Spanish Projects ESTRA- MAR (CTM2004-12631/MAR) and MODIVUS (CTM2005- 04795/MAR). O.G. had a Spanish CSIC-I3P fellowship sponsored by INNOVA Oceanografía Litoral, S.L. We thank O. López for his support. The Catalan Meteorological Service provided meteorological data from Malgrat de Mar, the Meteorological and Oceanographic Instrumental Net provided wave height data, and the Catalan Water Agency provided data on La Tordera River discharge. This is an ELOISE (European Land Ocean Interaction Studies) contribution.es_ES
dc.publisherInter Research-
dc.subjectEpisodic meteorological forcinges_ES
dc.subjectCoastal osmotrophic planktones_ES
dc.subjectTerrestrial runoffes_ES
dc.subjectSediment resuspensiones_ES
dc.subjectTime serieses_ES
dc.subjectNW Mediterraneanes_ES
dc.titleEpisodic meteorological and nutrient-load events as drivers of coastal ecosystem dynamics: a time series analysises_ES
dc.description.peerreviewedPeer reviewedes_ES
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