Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish

Tais W. Dahl, Emma U. Hammarlund, Ariel Anbar, David P.G. Bond, Benjamin C. Gill, Gwyneth Gordon, Andrew H. Knoll, Arne T. Nielsen, Niels H. Schovsbo, Donald E. Canfield

Research output: Contribution to journalArticle

205 Citations (Scopus)

Abstract

The evolution of Earth's biota is intimately linked to the oxygenation of the oceans and atmosphere. We use the isotopic composition and concentration of molybdenum (Mo) in sedimentary rocks to explore this relationship. Our results indicate two episodes of global ocean oxygenation. The first coincides with the emergence of the Ediacaran fauna, including large, motile bilaterian animals, ca. 550-560 million year ago (Ma), reinforcing previous geochemical indications that Earth surface oxygenation facilitated this radiation. The second, perhaps larger, oxygenation took place around 400 Ma, well after the initial rise of animals and, therefore, suggesting that early metazoans evolved in a relatively low oxygen environment. This later oxygenation correlates with the diversification of vascular plants, which likely contributed to increased oxygenation through the enhanced burial of organic carbon in sediments. It also correlates with a pronounced radiation of large predatory fish, animals with high oxygen demand. We thereby couple the redox history of the atmosphere and oceans to major events in animal evolution.

Original languageEnglish (US)
Pages (from-to)17911-17915
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number42
DOIs
StatePublished - Oct 19 2010

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Fishes
Oceans and Seas
Radiation
Oxygen
Atmosphere
Burial
Biota
Molybdenum
Oxidation-Reduction
Blood Vessels
Carbon
History

Keywords

  • Black shale
  • Molybdenum
  • Ocean oxygenation
  • Paleocean redox
  • Phanerozoic

ASJC Scopus subject areas

  • General

Cite this

Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish. / Dahl, Tais W.; Hammarlund, Emma U.; Anbar, Ariel; Bond, David P.G.; Gill, Benjamin C.; Gordon, Gwyneth; Knoll, Andrew H.; Nielsen, Arne T.; Schovsbo, Niels H.; Canfield, Donald E.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 107, No. 42, 19.10.2010, p. 17911-17915.

Research output: Contribution to journalArticle

Dahl, Tais W. ; Hammarlund, Emma U. ; Anbar, Ariel ; Bond, David P.G. ; Gill, Benjamin C. ; Gordon, Gwyneth ; Knoll, Andrew H. ; Nielsen, Arne T. ; Schovsbo, Niels H. ; Canfield, Donald E. / Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish. In: Proceedings of the National Academy of Sciences of the United States of America. 2010 ; Vol. 107, No. 42. pp. 17911-17915.
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