Articles | Volume 14, issue 21
https://doi.org/10.5194/bg-14-4905-2017
https://doi.org/10.5194/bg-14-4905-2017
Research article
 | 
07 Nov 2017
Research article |  | 07 Nov 2017

The influence of environmental variability on the biogeography of coccolithophores and diatoms in the Great Calcite Belt

Helen E. K. Smith, Alex J. Poulton, Rebecca Garley, Jason Hopkins, Laura C. Lubelczyk, Dave T. Drapeau, Sara Rauschenberg, Ben S. Twining, Nicholas R. Bates, and William M. Balch

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Cited articles

Armand, L. K., Cornet-Barthaux, V., Mosseri, J., and Quéguiner, B.: Late summer diatom biomass and community structure on and around the naturally iron-fertilised Kerguelen Plateau in the Southern Ocean, Deep Sea-Res. Pt. II, 55, 653–676, https://doi.org/10.1016/j.dsr2.2007.12.031, 2008.
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Bach, L. T., Riebesell, U., Gutowska, M. A., Federwisch, L., and Schulz, K. G.: A unifying concept of coccolithophore sensitivity to changing carbonate chemistry embedded in an ecological framework, Prog. Oceanogr., 135, 125–138, 2015.
Baines, S. B., Twining, B. S., Brzezinski, M. A., Nelson, D. M., and Fisher, N. S.: Causes and biogeochemical implications of regional differences in silicification of marine diatoms, Global Biogeochem. Cy., 24, 1–15, https://doi.org/10.1029/2010GB003856, 2010.
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The Great Calcite Belt (GCB), a region of high calcite concentration from coccolithophores, covers 60 % of the Southern Ocean area. We examined the influence of temperature, macronutrients, and carbonate chemistry on the distribution of mineralizing phytoplankton in the GCB. Coccolithophores occupy a niche in the Southern Ocean after the diatom spring bloom depletes silicic acid. No single environmental variable holds a dominant influence over phytoplankton biogeography in summer GCB conditions.
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