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Past and future decline of tropical pelagic biodiversity

Yasuhara, Moriaki; Wei, Chih-Lin; Kucera, Michal; Costello, Mark John; Tittensor, Derek P.; Kiessling, Wolfgang; Bonebrake, Timothy C.; Tabor, Clay; Feng, Ran; Baselga, Andrés; Kretschmer, Kerstin; Kusumoto, Buntarou; Kubota, Yasuhiro
Peer reviewed, Journal article
Accepted version
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URI
https://hdl.handle.net/11250/2723688
Date
2020
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  • Artikler, rapporter og annet (FBA) [956]
  • Publikasjoner fra Cristin - Nord universitet [4084]
Original version
Yasuhara, M., Wei, C.-L., Kucera, M., Costello, M. J., Tittensor, D. P., Kiessling, W., Bonebrake, T. C., Tabor, C. R., Feng, R., Baselga, A., Kretschmer, K., Kusumoto, B. & Kubota, Y. (2020). Past and future decline of tropical pelagic biodiversity. Proceedings of the National Academy of Sciences of the United States of America, 117(23), 12891-12896. doi:   10.1073/pnas.1916923117
Abstract
A major research question concerning global pelagic biodiversity remains unanswered: when did the apparent tropical biodiversity depression (i.e., bimodality of latitudinal diversity gradient [LDG]) begin? The bimodal LDG may be a consequence of recent ocean warming or of deep-time evolutionary speciation and extinction processes. Using rich fossil datasets of planktonic foraminifers, we show here that a unimodal (or only weakly bimodal) diversity gradient, with a plateau in the tropics, occurred during the last ice age and has since then developed into a bimodal gradient through species distribution shifts driven by postglacial ocean warming. The bimodal LDG likely emerged before the Anthropocene and industrialization, and perhaps ∼15,000 y ago, indicating a strong environmental control of tropical diversity even before the start of anthropogenic warming. However, our model projections suggest that future anthropogenic warming further diminishes tropical pelagic diversity to a level not seen in millions of years.
Description
 
Author's accepted version (postprint).
 
This is an Accepted Manuscript of an article published by the National Academy of Sciences in PNAS on 26/05/2020.
 
Available online: https://www.pnas.org/content/pnas/117/23/12891.full.pdf
 
Publisher
National Academy of Sciences
Journal
Proceedings of the National Academy of Sciences of the United States of America

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