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Unusual red tide of the dinoflagellate Lingulodinium polyedra during an upwelling event off the Algarve coast (SW Iberia)

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dc.contributor.authorDomingues, Rita B.
dc.contributor.authorLima, Maria João
dc.date.accessioned2023-07-07T11:20:27Z
dc.date.available2023-07-07T11:20:27Z
dc.date.issued2023
dc.description.abstractLow biomass, but highly toxic algal blooms are frequent in the Ria Formosa coastal lagoon and adjacent coastal zone (southern Portugal), usually associated with specific oceanographic and nutrient conditions. In June 2019, a massive bloom of the dinoflagellate Lingulodinium polyedra developed along the coast, causing water discolouration, and the closure of beaches and of bivalve harvesting, with significant socioeconomic consequences. This study aims to evaluate the relationships between phytoplankton composition and environmental conditions before, during, and after the L. polyedra bloom. Water samples were collected in the Ria Formosa coastal lagoon throughout June and July 2019 for determination of nutrient and chlorophyll-a concentration using spectrophotometric methods. Phytoplankton composition and abundance were evaluated using inverted microscopy. Upwelling intensity was estimated considering a wind-based index, the cross-shore Ekman transport. Results show strong relationships between phytoplankton community composition and nutrients, particularly a positive relationship between centric diatoms and nitrogen, and a negative relationship between several dinoflagellate genera, and phosphorus and silicon. L. polyedra was not significantly associated with any nutrient variable, most likely due to its mixotrophic capabilities. A clear phytoplankton succession, typical of eastern boundary upwelling locations, was observed throughout the different bloom phases, from dominance of type II dinoflagellates (Heterocapsa, Prorocentrum) in the pre-bloom period, to dominance of L. polyedra (type V) during the bloom, and finally dominance of centric diatoms in the post-bloom period. However, the L. polyedra bloom was not associated with upwelling relaxation, but rather with an active upwelling event. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).pt_PT
dc.description.sponsorshipLA/P/0069/2020pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.rsma.2023.102998pt_PT
dc.identifier.issn2352-4855
dc.identifier.urihttp://hdl.handle.net/10400.1/19820
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCentre for Marine and Environmental Research (CIMA)
dc.relationUnravelling environmental drivers and predictors of harmful phytoplankton blooms off southwestern Iberia
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectHarmful algal bloompt_PT
dc.subjectCoastal lagoonpt_PT
dc.subjectPhytoplankton communitypt_PT
dc.subjectNutrient limitationpt_PT
dc.subjectDinoflagellates Upwellingpt_PT
dc.titleUnusual red tide of the dinoflagellate Lingulodinium polyedra during an upwelling event off the Algarve coast (SW Iberia)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Marine and Environmental Research (CIMA)
oaire.awardTitleUnravelling environmental drivers and predictors of harmful phytoplankton blooms off southwestern Iberia
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00350%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/2022.13748.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1361%2FCT0017/PT
oaire.citation.startPage102998pt_PT
oaire.citation.titleRegional Studies in Marine Sciencept_PT
oaire.citation.volume63pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.fundingStreamDL 57/2016
person.familyNameDomingues
person.givenNameRita
person.identifier640932
person.identifier.ciencia-id7417-4EEC-3408
person.identifier.orcid0000-0002-7107-8222
person.identifier.scopus-author-id8627143500
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication43632aa6-ab1f-4c52-8737-dc069bc29291
relation.isAuthorOfPublication.latestForDiscovery43632aa6-ab1f-4c52-8737-dc069bc29291
relation.isProjectOfPublication607b395b-b4ff-4b27-b6e4-779cdea78d97
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