The effect of salinity on the biogeochemistry of the coccolithophores with implications for coccolith-based isotopic proxies

Hermoso, Michaël; Lecasble, Marceau

doi:https://doi.org/10.5194/bg-15-6761-2018

Articles | Volume 15, issue 22

https://doi.org/10.5194/bg-15-6761-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-15-6761-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 22

Research article

|

14 Nov 2018

Research article |

| 14 Nov 2018

The effect of salinity on the biogeochemistry of the coccolithophores with implications for coccolith-based isotopic proxies

Michaël Hermoso and Marceau Lecasble

Supplement

https://doi.org/10.5194/bg-15-6761-2018-supplement

Data sets

Changes in growth parameters of cultured coccolithophores and isotopic composition of coccolith calcite with salinity M. Hermoso https://doi.pangaea.de/10.1594/PANGAEA.895777

Download

Article (25860 KB)
Full-text XML

Short summary

This work examines the effect of salinity changes on the biogeochemistry of the coccolithophores with a palaeoproxy perspective. Although substantial changes in growth rate are observed between cells grown under various salinities, these physiological changes have no significant impact on the oxygen isotope composition of their biominerals. Thus, established coccolith δ¹⁸O / temperature calibrations are not complicated by salinity. By contrast, it does influence coccolith δ¹³C values.