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Tectonic-driven climate change and the diversification of angiosperms

hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
dc.contributor.authorCHABOUREAU, Anne-Claire
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierModélisation du climat [CLIM]
dc.contributor.authorSEPULCHRE, Pierre
hal.structure.identifierLaboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] [LSCE]
hal.structure.identifierModélisation du climat [CLIM]
dc.contributor.authorDONNADIEU, Yannick
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorFRANC, Alain
dc.date.issued2014
dc.identifier.issn0027-8424
dc.description.abstractEnIn 1879, Charles Darwin characterized the sudden and unexplained rise of angiosperms during the Cretaceous as an “abominable mystery.” The diversification of this clade marked the beginning of a rapid transition among Mesozoic ecosystems and floras formerly dominated by ferns, conifers, and cycads. Although the role of environmental factors has been suggested [Coiffard C, Gómez B (2012) Geol Acta 10(2):181–188], Cretaceous global climate change has barely been considered as a contributor to angiosperm radiation, and focus was put on biotic factors to explain this transition. Here we use a fully coupled climate model driven by Mesozoic paleogeographic maps to quantify and discuss the impact of continental drift on angiosperm expansion and diversification. We show that the decrease of desertic belts between the Triassic and the Cretaceous and the subsequent onset of long-lasting humid conditions during the Late Cretaceous were driven by the breakup of Pangea and were contemporaneous with the first rise of angiosperm diversification. Positioning angiosperm-bearing fossil sites on our paleobioclimatic maps shows a strong match between the location of fossil-rich outcrops and temperate humid zones, indicating that climate change from arid to temperate dominance may have set the stage for the ecological expansion of flowering plants.
dc.description.sponsorshipCEnter of the study of Biodiversity in Amazonia - ANR-10-LABX-0025
dc.language.isoen
dc.publisherNational Academy of Sciences
dc.title.enTectonic-driven climate change and the diversification of angiosperms
dc.typeArticle de revue
dc.identifier.doi10.1073/pnas.1324002111
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalProceedings of the National Academy of Sciences of the United States of America
bordeaux.page14066-14070
bordeaux.volume111
bordeaux.issue39
bordeaux.peerReviewedoui
hal.identifierhal-02637792
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02637792v1
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