Articles | Volume 15, issue 5
Biogeosciences, 15, 1515–1534, 2018
https://doi.org/10.5194/bg-15-1515-2018
Biogeosciences, 15, 1515–1534, 2018
https://doi.org/10.5194/bg-15-1515-2018

Research article 14 Mar 2018

Research article | 14 Mar 2018

Over-calcified forms of the coccolithophore Emiliania huxleyi in high-CO2 waters are not preadapted to ocean acidification

Peter von Dassow et al.

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Cited articles

Andrade, I., Hormazábal, S., and Combes, V.: Intrathermocline eddies at the Juan Fernández Archipelago, southeastern Pacific Ocean, Lat. Am. J. Aquat. Res., 42, 888–906, https://doi.org/10.3856/vol42-issue4-fulltext-14, 2014.
Armstrong, R. A., Lee, C., Hedges, J. I., Honjo, S., and Wakeham, S. G.: A new, mechanistic model for organic carbon fluxes in the ocean based on the quantitative association of POC with ballast minerals, Deep-Sea Res. Pt. II, 49, 219–236, https://doi.org/10.1016/S0967-0645(01)00101-1, 2002.
Bach, L. T., Bauke, C., Meier, K. J. S., Riebesell, U., and Schulz, K. G.: Influence of changing carbonate chemistry on morphology and weight of coccoliths formed by Emiliania huxleyi, Biogeosciences, 9, 3449–3463, https://doi.org/10.5194/bg-9-3449-2012, 2012.
Bach, L. T., Mackinder, L. C. M., Schulz, K. G., Wheeler, G., Schroeder, D. C., Brownlee, C., and Riebesell, U.: Dissecting the impact of CO2 and pH on the mechanisms of photosynthesis and calcification in the coccolithophore Emiliania huxleyi, New Phytol., 199, 121–134, 2013.
Baith, K., Lindsay, R., Fu, G., and McClain, C. R.: SeaDAS, a data analysis system for ocean-color satellite sensors, Eos T. Am. Geophys. Un., 82, 202–202, https://doi.org/10.1029/01EO00109, 2001.
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Short summary
Coccolithophores are microalgae which produce much of the calcium carbonate in the ocean, important to making organic carbon sink to great depths, and they may be negatively affected by the decline in ocean pH as CO2 rises. Can these important microbes adapt? This study found that coccolithophores inhabiting waters naturally low in pH may have already reached the limit of their ability to adapt. This suggests that how the ocean's biota sequester carbon will be strongly affected in the future.
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