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Are nutrients and light limiting summer phytoplankton in a temperate coastal lagoon?

2015Journal article Restricted access
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dc.contributor.authorDomingues, Rita B.
dc.contributor.authorGuerra, Cátia C.
dc.contributor.authorBarbosa, Ana B.
dc.contributor.authorGalvão, Helena
dc.date.accessioned2016-02-23T18:45:08Z
dc.date.available2016-02-23T18:45:08Z
dc.date.issued2015
dc.description.abstractThe Ria Formosa coastal lagoon is one of the most important and vulnerable ecosystems in Portugal, and it is subjected to strong anthropogenic pressures and natural nutrient inputs associated with coastal upwelling. The aim of this study was to evaluate the occurrence of nutrient and light limitation of phytoplankton growth during the productive period, and assess potential impacts of limitation on ecosystem eutrophication. Inorganic nutrients were added to natural microcosms filled with water collected at the landward and seaward boundaries, in summer 2012. Experimental treatments were incubated in situ under two different light intensities during 24 h. Phytoplankton composition, abundance and biomass, net growth rates and nutrient consumption were evaluated. At the landward location, potential nutrient limitation by nitrogen was observed. Nitrogen addition led to a significant increase in N consumption, resulting in higher phytoplankton growth, mainly diatoms, in all N-enriched treatments, under both light intensities. Significant consumption of silica and phosphorus was not reflected on growth, and it was probably due to luxury consumption. At the seaward station, hytoplankton, mainly cyanobacteria and eukaryotic picophytoplankton, were primarily limited by light, due to a deeper mixed layer. Nutrients were not limiting the phytoplankton growth due to import of nutrients from upwelled waters to the adjacent coastal zone.pt_PT
dc.identifier.doihttps://dx.doi.org/10.1007/s10452-015-9512-9pt_PT
dc.identifier.issn1386-2588
dc.identifier.otherAUT: HGA00327; ABA00694;
dc.identifier.urihttp://hdl.handle.net/10400.1/7735
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Verlagpt_PT
dc.subjectEutrophicationpt_PT
dc.subjectLimitationpt_PT
dc.subjectphytoplanktonpt_PT
dc.subjectNutrientspt_PT
dc.subjectLightpt_PT
dc.subjectCoastal lagoonspt_PT
dc.titleAre nutrients and light limiting summer phytoplankton in a temperate coastal lagoon?pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage146pt_PT
oaire.citation.issue5
oaire.citation.startPage127pt_PT
oaire.citation.titleAquatic Ecologypt_PT
oaire.citation.volume49pt_PT
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.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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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