Decoupled carbonate chemistry controls on the incorporation of boron into <i>Orbulina universa</i>

Howes, Ella L.; Kaczmarek, Karina; Raitzsch, Markus; Mewes, Antje; Bijma, Nienke; Horn, Ingo; Misra, Sambuddha; Gattuso, Jean-Pierre; Bijma, Jelle

doi:https://doi.org/10.5194/bg-14-415-2017

Articles | Volume 14, issue 2

https://doi.org/10.5194/bg-14-415-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-14-415-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 2

Research article

|

26 Jan 2017

Research article |

| 26 Jan 2017

Decoupled carbonate chemistry controls on the incorporation of boron into Orbulina universa

Ella L. Howes, Karina Kaczmarek, Markus Raitzsch, Antje Mewes, Nienke Bijma, Ingo Horn, Sambuddha Misra, Jean-Pierre Gattuso, and Jelle Bijma

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https://doi.org/10.5194/bg-14-415-2017-supplement

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Decoupled carbonate chemistry controls on the incorporation of boron into Orbulina universa E. Howes, K. Kaczmarek, M. Raitzsch, A. Mewes, N. Bijma, I. Horn, S. Misra, J.-P. Gattuso, and J. Bijma https://doi.org/10.1594/PANGAEA.868943

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Short summary

To calculate the seawater carbonate system, proxies for 2 out of 7 parameters are required. The boron isotopic composition of foraminifera shells can be used as a proxy for pH and it has been suggested that B / Ca ratios may act as a proxy for carbonate ion concentration. However, differentiating between the effects of pH and [CO₃²⁻] is problematic, as they co-vary in natural systems. To deconvolve the effects, we conducted culture experiments with the planktonic foraminifer Orbulina universa.