Articles | Volume 16, issue 5
https://doi.org/10.5194/bg-16-1019-2019
https://doi.org/10.5194/bg-16-1019-2019
Research article
 | 
14 Mar 2019
Research article |  | 14 Mar 2019

Phytoplankton calcifiers control nitrate cycling and the pace of transition in warming icehouse and cooling greenhouse climates

Karin F. Kvale, Katherine E. Turner, Angela Landolfi, and Katrin J. Meissner

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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 (21 Feb 2019) by Christine Klaas
AR by Karin Kvale on behalf of the Authors (24 Feb 2019)  Manuscript 
ED: Publish as is (01 Mar 2019) by Christine Klaas
AR by Karin Kvale on behalf of the Authors (02 Mar 2019)  Manuscript 
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Short summary
Drivers motivating the evolution of calcifying phytoplankton are poorly understood. We explore differences in global ocean chemistry with and without calcifiers during rapid climate changes. We find the presence of phytoplankton calcifiers stabilizes the volume of low oxygen regions and consequently stabilizes the concentration of nitrate, which is an important nutrient required for photosynthesis. By stabilizing nitrate concentrations, calcifiers improve their growth conditions.
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