Articles | Volume 17, issue 3
https://doi.org/10.5194/bg-17-609-2020
https://doi.org/10.5194/bg-17-609-2020
Research article
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07 Feb 2020
Research article | Highlight paper |  | 07 Feb 2020

Dimensions of marine phytoplankton diversity

Stephanie Dutkiewicz, Pedro Cermeno, Oliver Jahn, Michael J. Follows, Anna E. Hickman, Darcy A. A. Taniguchi, and Ben A. Ward

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Cited articles

Acevedo-Trejos, E., Brandt, G., Bruggeman, J., and Merico, A.: Mechanisms shaping size structure and functional diversity og phytoplankton communities in the ocean, Sci. Rep.-UK, 5, 8918, https://doi.org/10.1038/srep08918, 2015. 
Acevedo-Trejos, E., Marañón, E., and Merico, A: Phytoplankton size diversity and ecosystem function relationships across oceanic regions, P. R. Soc. B., 285, 20180621, https://doi.org/10.1098/rspb.2018.0621, 2018. 
Agawin, N. S. R. and Agustí, S.: Abundance, frequency of dividing cells and growth rates of Synechococcus sp. (cyanobacteria) in the stratified Northwest Mediterranean Sea, J. Plankton Res., 19, 1599–1615, 1997. 
Agawin, N. S. R., Rabouille, S., Veldhuis, M. J. W., Servatius, L., Hol, S., van Overzee, H. M. J., and Huisman, J.: Competition and facilitation between unicellular nitrogen-fixing cyanobacteria and non-nitrogen-fixing phytoplankton species, Limnol. Oceanogr., 52, 2233–2248, 2007. 
Allen, A. P., Gillooly, J. F., and Brown, J. H.: Recasting the species–energy hypothesis: the different roles of kinetic and potential energy in regulating biodiversity, in: Scaling biodiversity, edited by: Storch, D., Marquet, P. A., and Brown, J. H., 283–299, Cambridge University Press, Cambridge, 2007. 
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Short summary
Phytoplankton are an essential component of the marine food web and earth's carbon cycle. We use observations, ecological theory and a unique trait-based ecosystem model to explain controls on patterns of marine phytoplankton biodiversity. We find that different dimensions of diversity (size classes, biogeochemical functional groups, thermal norms) are controlled by a disparate combination of mechanisms. This may explain why previous studies of phytoplankton diversity had conflicting results.
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