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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 2
Biogeosciences, 14, 415-430, 2017
https://doi.org/10.5194/bg-14-415-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 415-430, 2017
https://doi.org/10.5194/bg-14-415-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

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 et al.
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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.
To calculate the seawater carbonate system, proxies for 2 out of 7 parameters are required. The...
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