Global topographic uplift has elevated speciation in mammals and birds over the last 3 million years.
Nature ecology & evolution
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Igea, J., & Tanentzap, A. (2021). Global topographic uplift has elevated speciation in mammals and birds over the last 3 million years.. Nature ecology & evolution https://doi.org/10.1038/s41559-021-01545-6
Topographic change shapes the evolution of biodiversity by influencing both habitat connectivity and diversity as well as abiotic factors like climate. However, its role in creating global biodiversity gradients remains poorly characterised because geology, climate, and evolutionary data have rarely been integrated across concordant timescales. Here we show that topographic uplift over the last 3 million years explains more spatial variation in the speciation of all mammals and birds than the direct effects of paleoclimate change and both present-day elevation and temperature. By contrast, the effects of topographic changes are much smaller than those of present-day temperatures in eroded areas. Together, our results stress that historical geological processes rather than traditionally studied macroecological gradients may ultimately generate much of the world’s biodiversity. More broadly, as the Earth’s surface continues to rise and fall, topography will remain an important driver of evolutionary change and novelty.
Gatsby Charitable Foundation (Grant Number GAT2962) and Isaac Newton Trust (Grant Number 17.24r)
Isaac Newton Trust (Minute 17.24(r))
WELLCOME TRUST (105602/Z/14/Z)
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External DOI: https://doi.org/10.1038/s41559-021-01545-6
This record's URL: https://www.repository.cam.ac.uk/handle/1810/325424
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