Atmospheric CO 2 forcing on Mediterranean biomes during the past 500 kyrs.

Autor: Koutsodendris A; Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany. andreas.koutsodendris@geow.uni-heidelberg.de., Dakos V; Institute des Sciences de l'Évolution, Université de Montpellier, CNRS, IRD, EPHE, Montpellier, France.; Institut d'Écologie et des Sciences de l'Environnement de Paris (iEES Paris), Sorbonne Université, Paris, France., Fletcher WJ; School of Environment, Education and Development, The University of Manchester, Manchester, UK., Knipping M; Department of Molecular Botany, Institute of Biology, University of Hohenheim, Stuttgart, Germany., Kotthoff U; Center for Earth System Research and Sustainability, Institute of Geology, Hamburg University, Hamburg, Germany.; Leibniz Institute for the Analysis of Biodiversity Change (LIB), Hamburg, Germany., Milner AM; Department of Geography, Royal Holloway University of London, London, UK., Müller UC; Parlamentsstraße 32, 60385, Frankfurt am Main, Germany.; Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Senckenberg Gesellschaft für Naturforschung, Frankfurt am Main, Germany., Kaboth-Bahr S; Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany.; Institute of Geosciences, University of Potsdam, Potsdam-Golm, Germany., Kern OA; Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany., Kolb L; Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany., Vakhrameeva P; Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany., Wulf S; School of the Environment, Geography and Geosciences, University of Portsmouth, Portsmouth, UK., Christanis K; Department of Geology, University of Patras, Rio, Greece., Schmiedl G; Center for Earth System Research and Sustainability, Institute of Geology, Hamburg University, Hamburg, Germany., Pross J; Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany.; Senckenberg Biodiversity and Climate Research Centre (SBiK-F), Senckenberg Gesellschaft für Naturforschung, Frankfurt am Main, Germany.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Mar 25; Vol. 14 (1), pp. 1664. Date of Electronic Publication: 2023 Mar 25.
DOI: 10.1038/s41467-023-37388-x
Abstrakt: There is growing concern on the survival of Mediterranean forests under the projected near-future droughts as a result of anthropogenic climate change. Here we determine the resilience of Mediterranean forests across the entire range of climatic boundary conditions realized during the past 500 kyrs based on continuous pollen and geochemical records of (sub)centennial-scale resolution from drillcores from Tenaghi Philippon, Greece. Using convergent cross-mapping we provide empirical confirmation that global atmospheric carbon dioxide (CO 2 ) may affect Mediterranean vegetation through forcing on moisture availability. Our analysis documents two stable vegetation regimes across the wide range of CO 2 and moisture levels realized during the past four glacial-interglacial cycles, with abrupt shifts from forest to steppe biomes occurring when a threshold in precipitation is crossed. Our approach highlights that a CO 2 -driven moisture decrease in the near future may bear an impending risk for abrupt vegetation regime shifts prompting forest loss in the Mediterranean region.
(© 2023. The Author(s).)
Databáze: MEDLINE
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