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Coccolithus pelagicus subsp. pelagicus versus Coccolithus pelagicus subsp. braarudii (Coccolithophore, Haptophyta): A proxy for surface subarctic Atlantic waters off Iberia during the last 200 kyr

2006Journal article Open access
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dc.contributor.authorNarciso, Áurea
dc.contributor.authorCachão, Mario
dc.contributor.authorAbreu, Lúcia de
dc.date.accessioned2021-11-22T15:14:15Z
dc.date.available2021-11-22T15:14:15Z
dc.date.issued2006
dc.description.abstractA Multivariate Morphon Analysis (MMA) of Coccolithus pelagicus (s. l.) coccoliths was performed on 178 samples from an oceanic core recovered off the Portuguese margin (MD95-2040), in order to define the morphometric boundaries of its morphotypes and their behaviour during the last two glacial cycles. The recurrent occurrence of the smaller morphotype of this taxon, C. pelagicus subsp. pelagicus, was recognized for the first time off the Portuguese coast. Three sections, around Heinrich Layers 1 and 6 and Termination II-Eemian, were selected to establish high resolution comparisons between C. pelagicus subsp. pelagicus and C. pelagicus subsp. braarudii and two independent proxies for cold water masses: the records of the planktonic foraminifera Neogloboquadrina pachyderma (sinistral) and ice-rafted detritus (IRD). There is an overall negative correlation between C. pelagicus subsp. pelagicus and C. pelagicus subsp. braarudii as expressed by MMA Factor 1, the scores of which respond similarly to those of two non-cocolithophore proxies and consequently, is proposed as a calcareous nannoplankton proxy for the influence of subpolar waters in the region. Detailed analysis, however, showed occasional decoupling amongst these three proxies, which are used to highlight significant changes between the cooling–warming sequences of distinct events off Iberia.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNarciso, A., Cachão, M., & de Abreu, L. (2006). Coccolithus pelagicus subsp. pelagicus versus Coccolithus pelagicus subsp. braarudii (Coccolithophore, Haptophyta): a proxy for surface subarctic Atlantic waters off Iberia during the last 200 kyr. Marine Micropaleontology, 59(1), 15-34. https://doi.org/10.1016/j.marmicro.2005.12.001pt_PT
dc.identifier.doi10.1016/j.marmicro.2005.12.001pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3843
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMORFOMETRIA E PALEOECOLOGIA DE COCCOLITHUS PELAGICUS COCCOLITHAPHYCEAE, NANOPLÂNCTON CALCÁRIO, NA REGIÃO ATLÂNTICA, DURANTE O QUATERNÁRIO
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPalaeoceanographypt_PT
dc.subjectPalaeoecologypt_PT
dc.subjectHeinrich Layerpt_PT
dc.subjectWestern Iberiapt_PT
dc.subjectCoccolithus pelagicus (s. l.)pt_PT
dc.subjectC. pelagicus subsp. pelagicuspt_PT
dc.subjectC. pelagicus subsp. braarudiipt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleCoccolithus pelagicus subsp. pelagicus versus Coccolithus pelagicus subsp. braarudii (Coccolithophore, Haptophyta): A proxy for surface subarctic Atlantic waters off Iberia during the last 200 kyrpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMORFOMETRIA E PALEOECOLOGIA DE COCCOLITHUS PELAGICUS COCCOLITHAPHYCEAE, NANOPLÂNCTON CALCÁRIO, NA REGIÃO ATLÂNTICA, DURANTE O QUATERNÁRIO
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F8944%2F2002/PT
oaire.citation.endPage34pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage15pt_PT
oaire.citation.titleMarine Micropaleontologypt_PT
oaire.citation.volume59pt_PT
person.familyNameMartins Narciso
person.givenNameÁurea
person.identifierAAU-8890-2021
person.identifier.ciencia-id9C10-F9E3-96C6
person.identifier.orcid0000-0002-4319-0241
person.identifier.scopus-author-id52564241900
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoveryc1c53c0c-02ac-4f17-815c-01e1c3fe68fc
relation.isProjectOfPublicationdeb8d4ec-0536-4551-a9e4-67e351489211
relation.isProjectOfPublication.latestForDiscoverydeb8d4ec-0536-4551-a9e4-67e351489211

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