Vegetation response to exceptional global warmth during Oceanic Anoxic Event 2.
- Heimhofer U Institute for Geology, Leibniz Universität Hannover, 30167, Hannover, Germany. heimhofer@geowi.uni-hannover.de.
- Wucherpfennig N Institute for Geology, Leibniz Universität Hannover, 30167, Hannover, Germany.
- Adatte T Institute of Geology and Palaeontology, Université de Lausanne, 1015, Lausanne, Switzerland.
- Schouten S Royal Netherlands Institute for Sea Research (NIOZ), Department of Marine Microbiology and Biogeochemistry, Utrecht University, 1790 AB, Den Burg, Texel, The Netherlands.
- Schneebeli-Hermann E Paleontological Institute and Museum, Universität Zürich, 8006, Zürich, Switzerland.
- Gardin S Centre de recherche sur la Paléobiodiversité et les Paléoenvironnements, Université Pierre et Marie Curie Paris 06, 75252, Paris, France.
- Keller G Department of Geosciences, Princeton University, Princeton, 08544, NJ, USA.
- Kentsch S Institute for Geology, Leibniz Universität Hannover, 30167, Hannover, Germany.
- Kujau A GFZ German Research Centre for Geosciences, Telegrafenberg, 14473, Potsdam, Germany.
- 2018-09-22
Published in:
- Nature communications. - 2018
English
The Cenomanian-Turonian Oceanic Anoxic Event (OAE2; ~94.5 million years ago) represents an episode of global-scale marine anoxia and biotic turnover, which corresponds to one of the warmest time intervals in the Phanerozoic. Despite its global significance, information on continental ecosystem response to this greenhouse episode is lacking. Here we present a terrestrial palynological record combined with marine-derived temperature data (TEX86) across an expanded OAE2 section from the Southern Provençal Basin, France. Despite high TEX86-derived temperature estimates reaching up to 38 °C, the continental hinterland did support a diverse vegetation, adapted to persist under elevated temperatures. A transient phase of climatic instability and cooling during OAE2 known as Plenus Cold Event (PCE) is marked by the proliferation of open, savanna-type vegetation rich in angiosperms at the expanse of conifer-dominated forest ecosystems. A rise in early representatives of Normapolles-type pollen during the PCE marks the initial radiation of this important angiosperm group.
- Language
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- English
- Open access status
- gold
- Identifiers
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- DOI 10.1038/s41467-018-06319-6
- PMID 30237441
- Persistent URL
- https://sonar.ch/global/documents/47428
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