Repository logo
 
Publication

Phytoplankton distribution and physical processes off NW Iberia during two consecutive upwelling seasons

2019-11Journal article Restricted access
Simple item page
dc.contributor.authorOliveira, P. B.
dc.contributor.authorAmorim, F. N.
dc.contributor.authorDubert, J.
dc.contributor.authorNolasco, R.
dc.contributor.authorMoita, Teresa
dc.date.accessioned2020-07-24T10:50:55Z
dc.date.available2020-07-24T10:50:55Z
dc.date.issued2019-11
dc.description.abstractThis work presents the results of two oceanographic surveys conducted off NW Iberia during successive summer upwelling seasons, aiming at the identification of the physical processes underlying the phytoplankton distribution in the area. Mooring (ADCP and thermistors) and ship-based CTD-F observations corroborate previous results that wind-driven upwelling circulation, (sub)mesoscale eddies and the stratification induced by the Western Iberia Buoyant Plume (WIBP) are the main processes affecting the chlorophyll distribution, but also provide new insights on key oceanographic structures governing the shelf circulation and phytoplankton structuring, namely (i) the link between frontal activity along the shelf break south of similar to 41 degrees N, the flow bifurcation at that latitude and the establishment of a cyclonic area with low frontal activity over the mid-shelf; (ii) the measurement of a previously unreported, remarkably persistent (> 1 month), near bottom poleward flow at the 30 m isobath, interpreted as the response to the alongshore pressure gradient driven by the stronger upwelling intensity north of 41 degrees N; (iii) the impact of low salinity buoyant plumes expressed on the shallowing of the Ekman layer, with the consequent frictional (Ekman) currents intensity increase, their low chlorophyll content contrary to previous winter/spring observations, and the lack of a direct relationship between plume salinities and river runoff; and (iv) the strong coupling between the chlorophyll distribution and the small-scale (O(1 - 10)km) oceanographic features providing further evidence that the phytoplankton distribution off NW Iberia in the summer upwelling season is strongly coupled to submesoscale processes.
dc.description.sponsorshipFCT/MCTES/MEC
dc.description.sponsorshipEuropean Regional Development Fund (ERDF/FEDER) through COMPETE Project HAB-SPOTEuropean Union (EU) [PDTCAVIAR/100348/2008]
dc.description.sponsorshipEuropean Regional Development Fund (ERDF/FEDER) through PT2020 Partnership AgreementEuropean Union (EU) [PTDC/CTA-AMB/31265/2017]
dc.description.sponsorshipEuropean Regional Development Fund (ERDF/FEDER) through Compete 2020European Union (EU) [PTDC/CTA-AMB/31265/2017]
dc.description.sponsorshipCESAM, FCT/MCTES project [UID/AMB/50017/2019]
dc.identifier.doi10.1016/j.csr.2019.103987
dc.identifier.issn0278-4343
dc.identifier.issn1873-6955
dc.identifier.urihttp://hdl.handle.net/10400.1/14172
dc.language.isoeng
dc.peerreviewedyes
dc.publisherPergamon-Elsevier Science Ltd
dc.subjectNorthern California
dc.subjectWestern Iberia
dc.subjectChlorophyll-A
dc.subjectInterannual variability
dc.subjectShelf circulation
dc.subjectRiver plume
dc.subjectDynamics
dc.subjectFilaments
dc.subjectWind
dc.subjectProductivity
dc.titlePhytoplankton distribution and physical processes off NW Iberia during two consecutive upwelling seasons
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F100348%2F2008/PT
oaire.citation.startPage103987
oaire.citation.titleContinental Shelf Research
oaire.citation.volume190
oaire.fundingStream3599-PPCDT
person.familyNameCalixto de Jesus Moita Garnel
person.givenNameMaria Teresa
person.identifier.ciencia-id8E1E-F416-8231
person.identifier.orcid0000-0002-8995-7516
person.identifier.ridM-4039-2013
person.identifier.scopus-author-id6602258258
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication0bd41e9e-a505-498d-9e0f-abb4bc0bf8e2
relation.isAuthorOfPublication.latestForDiscovery0bd41e9e-a505-498d-9e0f-abb4bc0bf8e2
relation.isProjectOfPublicationd7538874-a815-4cc0-a971-a11e1c81cd5f
relation.isProjectOfPublication.latestForDiscoveryd7538874-a815-4cc0-a971-a11e1c81cd5f

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
1-s2.0-S027843431930370X-main (1).pdf
Size:
4.7 MB
Format:
Adobe Portable Document Format
Download

Collections

CCM2-Artigos (em revistas ou actas indexadas)