Articles | Volume 15, issue 7
https://doi.org/10.5194/bg-15-1987-2018
https://doi.org/10.5194/bg-15-1987-2018
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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Latest update: 29 May 2024
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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.
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