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Diatoms Si uptake capacity drives carbon export in coastal upwelling systems

2016Journal article Open access
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dc.contributor.authorAbrantes, Fatima
dc.contributor.authorCermeno, Pedro
dc.contributor.authorLopes, C.
dc.contributor.authorRomero, Oscar
dc.contributor.authorMatos, Lelia
dc.contributor.authorVan Iperen, Jolanda
dc.contributor.authorRufino, Marta
dc.contributor.authorMagalhaes, Vitor
dc.date.accessioned2017-04-07T15:57:30Z
dc.date.available2017-04-07T15:57:30Z
dc.date.issued2016
dc.description.abstractCoastal upwelling systems account for approximately half of global ocean primary production and contribute disproportionately to biologically driven carbon sequestration. Diatoms, silica-precipitating microalgae, constitute the dominant phytoplankton in these productive regions, and their abundance and assemblage composition in the sedimentary record is considered one of the best proxies for primary production. The study of the sedimentary diatom abundance (SDA) and total organic carbon content (TOC) in the five most important coastal upwelling systems of the modern ocean (Iberia-Canary, Benguela, Peru-Humboldt, California, and Somalia-Oman) reveals a global-scale positive relationship between diatom production and organic carbon burial. The analysis of SDA in conjunction with environmental variables of coastal upwelling systems such as upwelling strength, satellite-derived net primary production, and surface water nutrient concentrations shows different relations between SDA and primary production on the regional scale. On the global scale, SDA appears modulated by the capacity of diatoms to take up silicic acid, which ultimately sets an upper limit to global export production in these ocean regions.
dc.identifier.doi10.5194/bg-13-4099-2016
dc.identifier.issn1726-4170
dc.identifier.urihttp://hdl.handle.net/10400.1/9729
dc.language.isoeng
dc.peerreviewedyes
dc.publisherEuropean Geosciences Union
dc.relation.isbasedonWOS:000381212300003
dc.titleDiatoms Si uptake capacity drives carbon export in coastal upwelling systems
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/PDCT/PDCT%2FMAR%2F56963%2F2004/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PTDC%2FAAG-GLO%2F3737%2F2012/PT
oaire.citation.endPage4109
oaire.citation.issue14
oaire.citation.startPage4099
oaire.citation.titleBIOGEOSCIENCES
oaire.citation.volume13
oaire.fundingStreamPDCT
oaire.fundingStreamCOMPETE
person.familyNameAbrantes
person.familyNameLopes
person.familyNameRufino
person.givenNameFatima
person.givenNameCristina
person.givenNameMarta
person.identifier.ciencia-id021D-CA76-20D2
person.identifier.ciencia-idC51B-0D01-9E8F
person.identifier.ciencia-id7E12-F7C8-156B
person.identifier.orcid0000-0002-9110-0212
person.identifier.orcid0000-0001-9884-5914
person.identifier.orcid0000-0002-0734-7491
person.identifier.ridB-5985-2013
person.identifier.ridJ-4193-2013
person.identifier.scopus-author-id16030759200
person.identifier.scopus-author-id55426813800
person.identifier.scopus-author-id6701333407
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
rcaap.rightsopenAccess
rcaap.typearticle
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