Elevated CO<sub>2</sub>, increased leaf-level productivity, and water-use efficiency during the early Miocene

Reichgelt, Tammo; D'Andrea, William J.; Valdivia-McCarthy, Ailín del C.; Fox, Bethany R. S.; Bannister, Jennifer M.; Conran, John G.; Lee, William G.; Lee, Daphne E.

doi:https://doi.org/10.5194/cp-16-1509-2020

Articles | Volume 16, issue 4

https://doi.org/10.5194/cp-16-1509-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-16-1509-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 4

Research article

|

20 Aug 2020

Research article |

| 20 Aug 2020

Elevated CO₂, increased leaf-level productivity, and water-use efficiency during the early Miocene

Tammo Reichgelt, William J. D'Andrea, Ailín del C. Valdivia-McCarthy, Bethany R. S. Fox, Jennifer M. Bannister, John G. Conran, William G. Lee, and Daphne E. Lee

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Final revised paper (published on 20 Aug 2020)
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Preprint (discussion started on 10 Mar 2020)
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Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Elevated CO2, increased leaf-level productivity and water-use efficiency during the early Miocene, Reichgelt et al.', Anonymous Referee #1, 06 May 2020
- AC1: 'Response to Anonymous Referee #1', Tammo Reichgelt, 14 Jun 2020
RC2: 'Miocene atmospheric CO2', Gregory Retallack, 13 May 2020
- AC2: 'Response to Reviewer #2 Dr. Retallack', Tammo Reichgelt, 14 Jun 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (25 Jun 2020) by Zhengtang Guo

AR by Tammo Reichgelt on behalf of the Authors (01 Jul 2020) Author's response Manuscript

ED: Publish as is (06 Jul 2020) by Zhengtang Guo

AR by Tammo Reichgelt on behalf of the Authors (06 Jul 2020)

Short summary

Carbon dioxide (CO₂) levels are increasing in the atmosphere. CO₂ has a direct fertilization effect on plants, meaning that plants can photosynthesize more and create more biomass under higher atmospheric CO₂. This paper outlines the first direct evidence of a carbon fertilization effect on plants in Earth's past from 23 × 10⁶ yr old fossil leaves, when CO₂ was higher. This allowed the biosphere to extend into areas that are currently too dry or too cold for forests.

Elevated CO2, increased leaf-level productivity, and water-use efficiency during the early Miocene

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Interactive discussion

Peer-review completion

Elevated CO₂, increased leaf-level productivity, and water-use efficiency during the early Miocene