Articles | Volume 14, issue 2
https://doi.org/10.5194/bg-14-415-2017
https://doi.org/10.5194/bg-14-415-2017
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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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.
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