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Effects of ultraviolet radiation and CO2 increase on winter phytoplankton assemblages in a temperate coastal lagoon

2014-01-07Journal article Restricted access
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dc.contributor.authorDomingues, Rita B.
dc.contributor.authorGuerra, Cátia C.
dc.contributor.authorBarbosa, Ana B.
dc.contributor.authorBrotas, V.
dc.contributor.authorGalvão, Helena M.
dc.date.accessioned2014-09-22T12:28:56Z
dc.date.available2015-01-07T01:30:06Z
dc.date.issued2014-01-07
dc.description.abstractIncreases in ultraviolet radiation (UVR) and CO2 affect phytoplankton growth and mortality in a variety of different ways. However, in situ responses of natural phytoplankton communities to climate change, as well as its effects on phytoplankton annual cycles, are still largely unknown. Although temperature and UVR have been increasing in temperate latitudes during winter, this season is still particularly neglected in climate change studies, being considered a non-active season regarding phytoplankton growth and production. Additionally, coastal lagoons are highly productive ecosystems and very vulnerable to climate change. This study aims, therefore, to evaluate the short-term effects of increased UVR and CO2 on the composition and growth of winter phytoplankton assemblages in a temperate coastal lagoon. During winter 2012, microcosm experiments were used to evaluate the isolated and combined effects of UVR and CO2, under ambient and high CO2 treatments, exposed to ambient UV levels and photosynthetically active radiation (PAR), or to PAR only. Phytoplankton composition, abundance, biomass and photosynthetic parameters were evaluated during the experiments. Significant changes were observed in the growth of specific phytoplankton groups, leading to changes in community composition. The cyanobacterium Synechococcus was dominant at the beginning of the experiment, but it was negatively affected by UVR and CO2. Diatoms clearly benefited from high CO2 and UVR, particularly Thalassiosira. Despite the changes observed in specific phytoplankton groups, growth and production of the whole phytoplankton community did not show significant responses to UVR and/or CO2.por
dc.identifier.doihttp://dx.doi.org/10.1093/plankt/fbt135
dc.identifier.issn0142-7873
dc.identifier.otherAUT: ABA00694; HGA00327;
dc.identifier.urihttp://hdl.handle.net/10400.1/5033
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherOxford University Presspor
dc.subjectCarbon dioxidepor
dc.subjectClimate changepor
dc.subjectCoastal lagoonspor
dc.subjectPhytoplanktonpor
dc.subjectUltraviolet radiationpor
dc.titleEffects of ultraviolet radiation and CO2 increase on winter phytoplankton assemblages in a temperate coastal lagoonpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage684por
oaire.citation.issue3por
oaire.citation.startPage672por
oaire.citation.titleJournal of Plankton Researchpor
oaire.citation.volume36por
person.familyNameDomingues
person.familyNameBarbosa
person.familyNameGalvão
person.givenNameRita
person.givenNameAna
person.givenNameHelena
person.identifier640932
person.identifier1291299
person.identifier.ciencia-id7417-4EEC-3408
person.identifier.ciencia-idF514-2180-4CF8
person.identifier.ciencia-idC51A-2C5A-CF8D
person.identifier.orcid0000-0002-7107-8222
person.identifier.orcid0000-0002-7402-246X
person.identifier.orcid0000-0003-0939-8994
person.identifier.scopus-author-id8627143500
person.identifier.scopus-author-id7103244778
person.identifier.scopus-author-id6505974701
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication43632aa6-ab1f-4c52-8737-dc069bc29291
relation.isAuthorOfPublication5b72648c-41b5-46c0-9a7f-7fa2f514b973
relation.isAuthorOfPublicationef31f343-34f9-4aec-a095-e070235d23b3
relation.isAuthorOfPublication.latestForDiscoveryef31f343-34f9-4aec-a095-e070235d23b3

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