Articles | Volume 21, issue 10
https://doi.org/10.5194/bg-21-2473-2024
https://doi.org/10.5194/bg-21-2473-2024
Research article
 | 
24 May 2024
Research article |  | 24 May 2024

Southern Ocean phytoplankton under climate change: a shifting balance of bottom-up and top-down control

Tianfei Xue, Jens Terhaar, A. E. Friederike Prowe, Thomas L. Frölicher, Andreas Oschlies, and Ivy Frenger

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Cited articles

Anderson, T. R., Gentleman, W. C., and Sinha, B.: Influence of grazing formulations on the emergent properties of a complex ecosystem model in a global ocean general circulation model, Prog. Oceanogr., 87, 201–213, https://doi.org/10.1016/j.pocean.2010.06.003, 2010. a
Arteaga, L. A., Pahlow, M., and Oschlies, A.: Modeled Chl: C ratio and derived estimates of phytoplankton carbon biomass and its contribution to total particulate organic carbon in the global surface ocean, Global Biogeochem. Cy., 30, 1791–1810, https://doi.org/10.1002/2016GB005458, 2016. a
Arteaga, L. A., Boss, E., Behrenfeld, M. J., Westberry, T. K., and Sarmiento, J. L.: Seasonal modulation of phytoplankton biomass in the Southern Ocean, Nat. Commun., 11, 1–10, https://doi.org/10.1038/s41467-020-19157-2, 2020. a, b, c, d, e, f, g
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Short summary
Phytoplankton play a crucial role in marine ecosystems. However, climate change's impact on phytoplankton biomass remains uncertain, particularly in the Southern Ocean. In this region, phytoplankton biomass within the water column is likely to remain stable in response to climate change, as supported by models. This stability arises from a shallower mixed layer, favoring phytoplankton growth but also increasing zooplankton grazing due to phytoplankton concentration near the surface.
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