Articles | Volume 16, issue 6
Clim. Past, 16, 2533–2546, 2020
https://doi.org/10.5194/cp-16-2533-2020
Clim. Past, 16, 2533–2546, 2020
https://doi.org/10.5194/cp-16-2533-2020

Research article 23 Dec 2020

Research article | 23 Dec 2020

Pliocene expansion of C4 vegetation in the Core Monsoon Zone on the Indian Peninsula

Ann G. Dunlea et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (05 Aug 2020) by Alberto Reyes
AR by Ann G. Dunlea on behalf of the Authors (06 Aug 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (27 Aug 2020) by Alberto Reyes
RR by Anonymous Referee #2 (16 Sep 2020)
ED: Publish subject to technical corrections (02 Oct 2020) by Alberto Reyes
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Short summary
Over the past 20 Myr, there has been a dramatic global increase in plants using C4 photosynthetic pathways. We analyze C and H isotopes in fatty acids of leaf waxes preserved in marine sediment from the Bay of Bengal to examine changes in photosynthesis in the Core Monsoon Zone of the Indian Peninsula over the past 6 Myr. The observed increase in C4 vegetation from 3.5 to 1.5 Ma is synchronous with C4 expansions in northwest Australia and East Africa, suggesting regional hydroclimate controls