Articles | Volume 17, issue 14
https://doi.org/10.5194/bg-17-3815-2020
https://doi.org/10.5194/bg-17-3815-2020
Research article
 | 
23 Jul 2020
Research article |  | 23 Jul 2020

The Southern Annular Mode (SAM) influences phytoplankton communities in the seasonal ice zone of the Southern Ocean

Bruce L. Greaves, Andrew T. Davidson, Alexander D. Fraser, John P. McKinlay, Andrew Martin, Andrew McMinn, and Simon W. Wright

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Cited articles

Abram, N. J., Mulvaney, R., Vimeux, F., Phipps, S. J., Turner, J., and England, M. H.: Evolution of the Southern Annular Mode during the past millennium, Nat. Clim. Change, 4, 564–569, https://doi.org/10.1038/nclimate2235, 2014. a, b
Acker, J. G. and Leptoukh, G.: Online analysis enhances use of NASA earth science data, Eos, Transactions American Geophysical Union, 88, 14–17, https:10.1029/2007EO020003, 2007. a, b
Alldredge, A. L. and Gotschalk, C. C.: Direct observations of the mass flocculation of diatom blooms: characteristics, settling velocities and formation of diatom aggregates, Deep-Sea Res. Pt. I, 36, 159–171, https://doi.org/10.1016/0198-0149(89)90131-3, 1989. a
Anderson, M. J. and Willis, T. J.: Canonical analysis of principal coordinates: a useful method of constrained ordination for ecology, Ecology, 84, 511–525, https://doi.org/10.1890/0012-9658(2003)084[0511:CAOPCA]2.0.CO;2, 2003. a
Arblaster, J. M. and Meehl, G. A.: Contributions of external forcings to southern annular mode trends, J. Clim., 19, 2896–2905, https://doi.org/10.1175/JCLI3774.1, 2006. a, b, c, d
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Short summary
We observed that variation in the Southern Annular Mode (SAM) over 11 years showed a relationship with the species composition of hard-shelled phytoplankton in the seasonal ice zone (SIZ) of the Southern Ocean. Phytoplankton in the SIZ are productive during the southern spring and summer when the area is ice-free, with production feeding most Antarctic life. The SAM is known to be increasing with climate change, and changes in phytoplankton in the SIZ may have implications for higher life forms.
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