Articles | Volume 15, issue 8
https://doi.org/10.5194/bg-15-2393-2018
https://doi.org/10.5194/bg-15-2393-2018
Research article
 | 
20 Apr 2018
Research article |  | 20 Apr 2018

Ocean acidification changes the structure of an Antarctic coastal protistan community

Alyce M. Hancock, Andrew T. Davidson, John McKinlay, Andrew McMinn, Kai G. Schulz, and Rick L. van den Enden

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Cited articles

Aberle, N., Schulz, K. G., Stuhr, A., Malzahn, A. M., Ludwig, A., and Riebesell, U.: High tolerance of microzooplankton to ocean acidification in an Arctic coastal plankton community, Biogeosciences, 10, 1471–1481, https://doi.org/10.5194/bg-10-1471-2013, 2013. a
Arrigo, K. R. and Thomas, D. N.: Large scale importance of sea ice biology in the Southern Ocean, Antarct. Sci., 16, 471–486, https://doi.org/10.1017/S0954102004002263, 2004. a, b
Arrigo, K. R., Robinson, D. H., Worthen, D. L., Dunbar, R. B., DiTullio, G. R., VanWoert, M., and Lizotte, M. P.: Phytoplankton community structure and the drawdown of nutrients and CO2 in the Southern Ocean, Science, 283, 365–367, 1999. a
Arrigo, K. R., van Dijken, G. L., and Bushinsky, S.: Primary production in the Southern Ocean, 1997-2006, J. Geophys. Res. Ocean., 113, C08004, https://doi.org/10.1029/2007JC004551, 2008. a, b
Bermúdez, J. R., Riebesell, U., Larsen, A., and Winder, M.: Ocean acidification adversely affects trophic interactions and transfer of essential biochemical compounds in a natural plankton community, Sci. Rep., 6, 1–8, https://doi.org/10.1038/srep27749, 2016. a
Short summary
Absorption of carbon dioxide (CO2) realized by humans is decreasing the ocean pH (ocean acidification). Single-celled organisms (microbes) support the Antarctic ecosystem, yet little is known about their sensitivity to ocean acidification. This study shows a shift in a natural Antarctic microbial community, with CO2 levels exceeding 634 μatm changing the community composition and favouring small cells. This would have significant flow effects for Antarctic food webs and elemental cycles.
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