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Recent accelerated diversification in rosids occurred outside the tropics

Author

Listed:
  • Miao Sun

    (University of Florida
    Aarhus University
    The Chinese Academy of Sciences)

  • Ryan A. Folk

    (Mississippi State University)

  • Matthew A. Gitzendanner

    (University of Florida
    University of Florida)

  • Pamela S. Soltis

    (University of Florida
    University of Florida
    University of Florida)

  • Zhiduan Chen

    (The Chinese Academy of Sciences)

  • Douglas E. Soltis

    (University of Florida
    University of Florida
    University of Florida
    University of Florida)

  • Robert P. Guralnick

    (University of Florida
    University of Florida)

Abstract

Conflicting relationships have been found between diversification rate and temperature across disparate clades of life. Here, we use a supermatrix comprising nearly 20,000 species of rosids—a clade of ~25% of all angiosperm species—to understand global patterns of diversification and its climatic association. Our approach incorporates historical global temperature, assessment of species’ temperature niche, and two broad-scale characterizations of tropical versus non-tropical niche occupancy. We find the diversification rates of most subclades dramatically increased over the last 15 million years (Myr) during cooling associated with global expansion of temperate habitats. Climatic niche is negatively associated with diversification rates, with tropical rosids forming older communities and experiencing speciation rates ~2-fold below rosids in cooler climates. Our results suggest long-term cooling had a disproportionate effect on non-tropical diversification rates, leading to dynamic young communities outside of the tropics, while relative stability in tropical climes led to older, slower-evolving but still species-rich communities.

Suggested Citation

  • Miao Sun & Ryan A. Folk & Matthew A. Gitzendanner & Pamela S. Soltis & Zhiduan Chen & Douglas E. Soltis & Robert P. Guralnick, 2020. "Recent accelerated diversification in rosids occurred outside the tropics," Nature Communications, Nature, vol. 11(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17116-5
    DOI: 10.1038/s41467-020-17116-5
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    Cited by:

    1. Heather R. Kates & Brian C. O’Meara & Raphael LaFrance & Gregory W. Stull & Euan K. James & Shui-Yin Liu & Qin Tian & Ting-Shuang Yi & Daniel Conde & Matias Kirst & Jean-Michel Ané & Douglas E. Soltis, 2024. "Shifts in evolutionary lability underlie independent gains and losses of root-nodule symbiosis in a single clade of plants," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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