Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Volume 13, issue 4
Biogeosciences, 13, 1163-1177, 2016
https://doi.org/10.5194/bg-13-1163-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 1163-1177, 2016
https://doi.org/10.5194/bg-13-1163-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 25 Feb 2016

Research article | 25 Feb 2016

Apparent increase in coccolithophore abundance in the subtropical North Atlantic from 1990 to 2014

Kristen M. Krumhardt et al.
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Agawin, N. S. R., Tovar-Sánchez, A., de Zarruk, K. K., Duarte, C. M., and Agustí, S.: Variability in the abundance of Trichodesmium and nitrogen fixation activities in the subtropical NE Atlantic, J. Plankton Res., 35, 1126–1140, 2013.
Andersen, R. A., Bidigare, R. R., Keller, M. D., and Latasa, M.: A comparison of HPLC pigment signatures and electron microscopic observations for oligotrophic waters of the North Atlantic and Pacific Oceans, Deep-Sea Res. Pt. II, 43, 517–537, https://doi.org/10.1016/0967-0645(95)00095-X, 1996.
Arnold, H. E., Kerrison, P., and Steinke, M.: Interacting effects of ocean acidification and warming on growth and DMS-production in the haptophyte coccolithophore Emiliania huxleyi, Glob. Change Biol., 19, 1007–1016, https://doi.org/10.1111/gcb.12105, 2013.
Bach, L. T.: Reconsidering the role of carbonate ion concentration in calcification by marine organisms, Biogeosciences, 12, 4939–4951, https://doi.org/10.5194/bg-12-4939-2015, 2015.
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, https://doi.org/10.1111/nph.12225, 2013.
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In this study, we combine phytoplankton pigment data with particulate inorganic carbon and chlorophyll measurements from the satellite record to assess recent trends in phytoplankton dynamics in the North Atlantic subtropical gyre, with a focus on coccolithophores. We show that coccolithophores in the North Atlantic have been increasing in abundance. Correlations suggest that they are responding positively to increasing inorganic carbon from anthropogenic inputs in the upper mixed layer.
In this study, we combine phytoplankton pigment data with particulate inorganic carbon and...
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