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Using bio-optical parameters as a tool for detecting changes in the phytoplankton community (SW Portugal)

2015-12Journal article Restricted
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dc.contributor.authorGoela, Priscila
dc.contributor.authorIcely, John
dc.contributor.authorCristina, Sonia
dc.contributor.authorDanchenko, Sergei
dc.contributor.authorAngel DelValls, T.
dc.contributor.authorNewton, Alice
dc.date.accessioned2018-12-07T14:52:54Z
dc.date.available2018-12-07T14:52:54Z
dc.date.issued2015-12
dc.description.abstractUpwelling events off the Southwest coast of Portugal can trigger phytoplankton blooms that are important for the fisheries and aquaculture sectors in this region. However, climate change scenarios forecast fluctuations in the intensity and frequency of upwelling events, thereby potentially impacting these sectors. Shifts in the phytoplankton community were analysed from the end of 2008 until the beginning of 2012 by examining the bio-optical properties of the water column, namely the absorption coefficients for phytoplankton, non-algal particles and coloured dissolved organic matter (CDOM). The phytoplankton community was assessed by microscopy, with counts from an inverted microscope, and by chemotaxonomic methodologies, using pigment concentrations determined by High-Performance Liquid Chromatography (HPLC). Results both from microscopy and from chemotaxonomic methods showed a shift from diatom dominance related to bloom conditions matching upwelling events, to small flagellate dominance related to no-bloom conditions matching relaxation of upwelling. During bloom conditions, light absorption from phytoplankton increased markedly, while non-algal particles and CDOM absorption remained relatively constant. The dynamics of CDOM in the study area was attributed to coastal influences rather than from phytoplankton origin. Changes in phytoplankton biomass and consequent alterations in phytoplankton absorption coefficients were attributed to upwelling regimes in the area. Bio-optical parameters can contribute to environmental monitoring of coastal and oceanic waters, which in the case of the European Union, involves the implementation of the Water Framework, Marine Strategy Framework and Marine Spatial Planning Directives. (C) 2015 The Authors.Published by Elsevier Ltd.
dc.description.sponsorshipFCT [SFRH/BD/78356/2011, SFRH/BD/78354/2011]; EU [607325, 633576, 308392]; Erasmus Mundus EMJD MACOMA; Bank Santander/UNESCO UNITWIN WiCop; European Space Agency [21464/08/I-OL]
dc.identifier.doi10.1016/j.ecss.2015.07.037
dc.identifier.issn0272-7714
dc.identifier.issn1096-0015
dc.identifier.urihttp://hdl.handle.net/10400.1/11257
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationDEVelopment Of innovative Tools for understanding marine biodiversity and assessing good Environmental Status
dc.relationAQUA-USERS: AQUAculture USEr driven operational Remote Sensing information services
dc.subjectWestern Iberian Peninsula
dc.subjectSea surface temperature
dc.subjectHarmful algal blooms
dc.subjectOcean color
dc.subjectLight absorption
dc.subjectCoastal waters
dc.subjectPigment concentrations
dc.subjectNatural phytoplankton
dc.subjectAquatic particles
dc.subjectSouthwest coast
dc.titleUsing bio-optical parameters as a tool for detecting changes in the phytoplankton community (SW Portugal)
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDEVelopment Of innovative Tools for understanding marine biodiversity and assessing good Environmental Status
oaire.awardTitleAQUA-USERS: AQUAculture USEr driven operational Remote Sensing information services
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/308392/EU
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/607325/EU
oaire.citation.endPage137
oaire.citation.startPage125
oaire.citation.titleEstuarine, Coastal and Shelf Science
oaire.citation.volume167
oaire.fundingStreamFP7
oaire.fundingStreamFP7
person.familyNameGoela
person.familyNameIcely
person.familyNameCristina
person.familyNameNewton
person.givenNamePriscila
person.givenNameJohn
person.givenNameSónia
person.givenNameAlice
person.identifier333937
person.identifier.ciencia-idB713-3911-1803
person.identifier.ciencia-id6F13-1247-B2B7
person.identifier.orcid0000-0001-9786-1269
person.identifier.orcid0000-0002-9114-8283
person.identifier.orcid0000-0002-5716-9750
person.identifier.orcid0000-0001-9286-5914
person.identifier.scopus-author-id55957312000
person.identifier.scopus-author-id6506626316
person.identifier.scopus-author-id7201391894
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
project.funder.nameEuropean Commission
rcaap.rightsrestrictedAccess
rcaap.typearticle
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