Articles | Volume 15, issue 7
Research article
04 Apr 2018
Research article |  | 04 Apr 2018

Do pelagic grazers benefit from sea ice? Insights from the Antarctic sea ice proxy IPSO25

Katrin Schmidt, Thomas A. Brown, Simon T. Belt, Louise C. Ireland, Kyle W. R. Taylor, Sally E. Thorpe, Peter Ward, and Angus Atkinson

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Cited articles

Ainley, D., Woehler, E. J., and Lescroël, A.: Birds and Antarctic sea ice, in: Sea Ice, edited by: Thomas, D. N., John Wiley & Sons, Ltd, Chichester, 570–582,, 2017.
Arndt, C. E. and Swadling, K. M.: Crustacea in Arctic and Antarctic sea ice: distribution, diet and life history strategies, Adv. Mar. Biol., 51, 197–315,, 2006.
Arrigo, K.: Sea ice as a habitat for primary producers, in: Sea Ice, edited by: Thomas, D. N., John Wiley & Sons, Ltd, Chichester, 352–369,, 2017.
Arrigo, K. R., van Dijken, L. G. L., and Bushinsky, S.: Primary production in the Southern Ocean, 1997–2006, J. Geophys. Res., 113, C08004,, 2008.
Atkinson, A. and Peck, J. M.: A summer-winter comparison of zooplankton in the oceanic area around South Georgia, Polar Biol., 8, 463–473,, 1988.
Short summary
Sea ice cover is declining across the polar regions, but its importance for the food webs is largely unknown. We used certain diatom metabolites to trace ice-derived and ice-conditioned algae production within pelagic grazers. Our results show that zooplankton can feed on ice algae long after their release into the water column, and that the marginal ice zone can act as an important feeding ground. Predictions on future functioning of polar ecosystems need to consider such subtle relationships.
Final-revised paper