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dc.rights.licenseopenen_US
hal.structure.identifierCenter for Marine Environmental Sciences [Bremen] [MARUM]
dc.contributor.authorDUPONT, Lydie
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorCALEY, Thibaut
hal.structure.identifierUniversity of Massachusetts [Amherst] [UMass Amherst]
dc.contributor.authorCASTAÑEDA, Isla
dc.date.accessioned2024-01-29T10:36:07Z
dc.date.available2024-01-29T10:36:07Z
dc.date.issued2019
dc.identifier.issn1814-9324en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/187580
dc.description.abstractEnVery little is known about the impact of atmospheric carbon dioxide pressure (pCO 2) on the shaping of biomes. The development of pCO 2 throughout the Brun-hes Chron may be considered a natural experiment to elucidate relationships between vegetation and pCO 2. While the glacial periods show low to very low values (∼ 220 to ∼ 190 ppmv, respectively), the pCO 2 levels of the interglacial periods vary from intermediate to relatively high (∼ 250 to more than 270 ppmv, respectively). To study the influence of pCO 2 on the Pleistocene development of SE African vegetation , we used the pollen record of a marine core (MD96-2048) retrieved from Delagoa Bight south of the Limpopo River mouth in combination with stable isotopes and geo-chemical proxies. Applying endmember analysis, four pollen assemblages could be distinguished representing different biomes: heathland, mountain forest, shrubland and woodland. We find that the vegetation of the Limpopo River catchment and the coastal region of southern Mozambique is influenced not only by hydroclimate but also by temperature and atmospheric pCO 2. Our results suggest that the extension of mountain forest occurred during those parts of the glacials when pCO 2 and temperatures were moderate and that only during the colder periods when atmospheric pCO 2 was low (less than 220 ppmv) open ericaceous vegetation including C 4 sedges extended. The main development of woodlands in the area took place after the Mid-Brunhes Event (∼ 430 ka) when interglacial pCO 2 levels regularly rose over 270 ppmv.
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.title.enEffects of atmospheric CO<sub>2</sub> variability of the past 800 kyr on the biomes of southeast Africa
dc.typeArticle de revueen_US
dc.identifier.doi10.5194/cp-15-1083-2019en_US
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Climatologieen_US
bordeaux.journalClimate of the Pasten_US
bordeaux.page1083-1097en_US
bordeaux.volume15en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamPALEOen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-02325008
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Climate%20of%20the%20Past&rft.date=2019&rft.volume=15&rft.issue=3&rft.spage=1083-1097&rft.epage=1083-1097&rft.eissn=1814-9324&rft.issn=1814-9324&rft.au=DUPONT,%20Lydie&CALEY,%20Thibaut&CASTA%C3%91EDA,%20Isla&rft.genre=article


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