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A 12,000-yr pollen record off Cape Hatteras — Pollen sources and mechanisms of pollen dispersion

2015Journal article Restricted access
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dc.contributor.authorNaughton, F.
dc.contributor.authorKeigwin, L.
dc.contributor.authorPeteet, D.
dc.contributor.authorCostas, S.
dc.contributor.authorDesprat, S.
dc.contributor.authorOliveira, Dulce
dc.contributor.authorde Vernal, A.
dc.contributor.authorH L Voelker, Antje
dc.contributor.authorAbrantes, Fatima
dc.date.accessioned2020-11-18T13:40:38Z
dc.date.available2020-11-18T13:40:38Z
dc.date.issued2015
dc.description.abstractIntegrating both marine and terrestrial signals from the same sediment core is one of the primary challenges for understanding the role of ocean-atmosphere coupling throughout past climate changes. It is therefore vital to understand how the pollen signal of a given marine record reflects the vegetation changes of the neighboring continent. The comparison between the pollen record of marine core JPC32 (KNR178JPC32) and available terrestrial pollen sequences from eastern North America over the last 12,170 years indicates that the pollen signature off Cape Hatteras gives an integrated image of the regional vegetation encompassing the Pee Dee river, Chesapeake and Delaware hydrographic basins and is reliable in reconstructing the past climate of the adjacent continent. Extremely high quantities of pollen grains included in the marine sediments off Cape Hatteras were transferred from the continent to the sea, at intervals 10,100-8800 cal yr BP, 8300-7500 cal yr BP, 5800-4300 cal yr BP and 2100-730 cal yr BP, during storm events favored by episodes of rapid sea-level rise in the eastern coast of US. In contrast, pollen grains export was reduced during 12,170-10,150 cal yr BP and 4200-2200 cal yr BP, during episodes of intense continental dryness and slow sea level rise episodes or lowstands in the eastern coast of US. The near absence of reworked pollen grains in core JPC32 contrasts with the high quantity of reworked material in nearby but deeper located marine sites, suggesting that the JPC32 record was not affected by the Deep Western Boundary Current (DWBC) since the end of the Younger Dryas and should be considered a key site for studying past climate changes in the western North Atlantic.pt_PT
dc.description.sponsorshipSFRH/BPD/96614/2013, Incentivo/MAR/LA00015/2014, OCE-0214144pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.margeo.2015.06.003pt_PT
dc.identifier.issn0025-3227
dc.identifier.urihttp://hdl.handle.net/10400.1/14835
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEastern North Americapt_PT
dc.subjectHolocenept_PT
dc.subjectCape Hatteraspt_PT
dc.subjectMarine pollen signaturept_PT
dc.subjectVegetation changespt_PT
dc.subjectLand-sea pollen transferpt_PT
dc.titleA 12,000-yr pollen record off Cape Hatteras — Pollen sources and mechanisms of pollen dispersionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAAC-CLI%2F100157%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F36615%2F2007/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FAAC-AMB%2F108449%2F2008/PT
oaire.citation.endPage129pt_PT
oaire.citation.startPage118pt_PT
oaire.citation.titleMarine Geologypt_PT
oaire.citation.volume367pt_PT
oaire.fundingStream5876-PPCDTI
oaire.fundingStreamSFRH
oaire.fundingStream5876-PPCDTI
person.familyNameNaughton
person.familyNameCostas
person.familyNameOliveira
person.familyNameVoelker
person.familyNameAbrantes
person.givenNameFilipa
person.givenNameSusana
person.givenNameDulce
person.givenNameAntje
person.givenNameFatima
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person.identifier.ridE-7659-2013
person.identifier.ridH-9855-2018
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person.identifier.scopus-author-id8784446000
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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