Articles | Volume 17, issue 24
https://doi.org/10.5194/bg-17-6357-2020
https://doi.org/10.5194/bg-17-6357-2020
Research article
 | 
16 Dec 2020
Research article |  | 16 Dec 2020

Reduced growth with increased quotas of particulate organic and inorganic carbon in the coccolithophore Emiliania huxleyi under future ocean climate change conditions

Yong Zhang, Sinéad Collins, and Kunshan Gao

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Cited articles

Bach, L. T., Riebesell, U., and Schulz, K. G.: Distinguishing between the effects of ocean acidification and ocean carbonation in the coccolithophore Emiliania huxleyi, Limnol. Oceanogr., 56, 2040–2050, https://doi.org/10.4319/lo.2011.56.6.2040, 2011. 
Barton, A. D., Irwin, A. J., Finkel, Z. V., and Stock, C. A.: Anthropogenic climate change drives shift and shuffle in North Atlantic phytoplankton communities, P. Natl. Acad. Sci. USA, 113, 2964–2969, https://doi.org/10.1073/pnas.1519080113, 2016. 
Berdalet, E., Roldán, C., Olivar, M. P., and Lysnes, K.: Quantifying RNA and DNA in planktonic organisms with SYBR Green II and nucleases. Part A. Optimisation of the assay, Sci. Mar., 69, 1–16, https://doi.org/10.3989/scimar.2005.69n11, 2005. 
Biermann, A. and Engel, A.: Effect of CO2 on the properties and sinking velocity of aggregates of the coccolithophore Emiliania huxleyi, Biogeosciences, 7, 1017–1029, https://doi.org/10.5194/bg-7-1017-2010, 2010. 
Blanco-Ameijeiras, S., Lebrato, M., Stoll, H. M., Iglesias-Rodriguez, D., Müller, M. N., Méndez-Vicente, A., and Oschlies, A.: Phenotypic variability in the coccolithophore Emiliania huxleyi, Plos ONE, 11, e0157697, https://doi.org/10.1371/journal.pone.0157697, 2016. 
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Short summary
Our results show that ocean acidification, warming, increased light exposure and reduced nutrient availability significantly reduce the growth rate but increase particulate organic and inorganic carbon in cells in the coccolithophore Emiliania huxleyi, indicating biogeochemical consequences of future ocean changes on the calcifying microalga. Concurrent changes in nutrient concentrations and pCO2 levels predominantly affected E. huxleyi growth, photosynthetic carbon fixation and calcification.
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