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Diversity dynamics of marine planktonic diatoms across the Cenozoic

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  • Daniel L. Rabosky

    (Cornell University, Ithaca, New York 14853, USA
    Fuller Evolutionary Biology Program, Cornell Laboratory of Ornithology, Ithaca, New York 14850, USA)

  • Ulf Sorhannus

    (Edinboro University of Pennsylvania, Edinboro, Pennsylvania 16444, USA)

Abstract

Diatoms kept off the grass Single-celled algae called diatoms constitute a vital part of the oceanic ecosystem. Utterly dependent on silica, diatoms are thought to have risen to prominence alongside grasslands, in the Miocene epoch, when the first large-scale weathering of grassland-derived silica took place. A new analysis of an ocean-bed database contradicts that scenario: Daniel Rabosky and Ulf Sorhannus show that diatom diversity peaked about 40 million years ago at the Eocene–Oligocene boundary, long before grasslands became prominent. Other explanations for the changing fortunes of diatoms must now be sought.

Suggested Citation

  • Daniel L. Rabosky & Ulf Sorhannus, 2009. "Diversity dynamics of marine planktonic diatoms across the Cenozoic," Nature, Nature, vol. 457(7226), pages 183-186, January.
    • Handle: RePEc:nat:nature:v:457:y:2009:i:7226:d:10.1038_nature07435
    DOI: 10.1038/nature07435
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    Cited by:

    1. Yoshiyuki Ishitani & Yurika Ujiié & Colomban de Vargas & Fabrice Not & Kozo Takahashi, 2012. "Phylogenetic Relationships and Evolutionary Patterns of the Order Collodaria (Radiolaria)," PLOS ONE, Public Library of Science, vol. 7(5), pages 1-8, May.

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