Dying in the Sun: Direct evidence for elevated UV-B radiation at the end-Permian mass extinction-Reference-Cited by-同舟云学术

Dying in the Sun: Direct evidence for elevated UV-B radiation at the end-Permian mass extinction

Published:2023-01-06 Issue:1 Volume:9 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Liu Feng¹²^ORCID,Peng Huiping¹^ORCID,Marshall John E. A.³^ORCID,Lomax Barry H.⁴^ORCID,Bomfleur Benjamin⁵^ORCID,Kent Matthew S.⁴^ORCID,Fraser Wesley T.⁶^ORCID,Jardine Phillip E.⁵^ORCID

Affiliation:

1. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China.

2. State Key Laboratory of Palaeobiology and Stratigraphy and Center for Excellence in Life and Paleoenvironment, Nanjing 210008, China.

3. School of Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH, UK.

4. Division of Agricultural and Environmental Sciences, The School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Sutton Bonington, Leicestershire, LE12 5RD, UK.

5. Palaeobotany Group, Institute of Geology and Palaeontology, University of Münster, Münster 48149, Germany.

6. Geography, School of Social Sciences, Oxford Brookes University, Oxford OX3 0BP, UK.

Abstract

Land plants can adjust the concentration of protective ultraviolet B (UV-B)–absorbing compounds (UACs) in the outer wall of their reproductive propagules in response to ambient UV-B flux. To infer changes in UV-B radiation flux at Earth’s surface during the end-Permian mass extinction, we analyze UAC abundances in ca. 800 pollen grains from an independently dated Permian-Triassic boundary section in Tibet. Our data reveal an excursion in UACs that coincide with a spike in mercury concentration and a negative carbon-isotope excursion in the latest Permian deposits, suggesting a close temporal link between large-scale volcanic eruptions, global carbon and mercury cycle perturbations, and ozone layer disruption. Because enhanced UV-B radiation can exacerbate the environmental deterioration induced by massive magmatism, ozone depletion is considered a compelling ecological driver for the terrestrial mass extinction.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Link

https://www.science.org/doi/pdf/10.1126/sciadv.abo6102

Reference60 articles.

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