Biogeosciences
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Articles | Volume 23, issue 2
Articles | Volume 23, issue 2
https://doi.org/10.5194/bg-23-665-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-665-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 2
Research article
 | 
26 Jan 2026
Research article |  | 26 Jan 2026

Drivers of phytoplankton bloom interannual variability in the Amundsen and Pine Island Polynyas

Guillaume Liniger, Delphine Lannuzel, Sébastien Moreau, Michael S. Dinniman, and Peter G. Strutton

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Short summary
We investigate the phytoplankton bloom variability and its drivers in the Amundsen polynyas (areas of open water within sea ice). Between 1998 and 2017, we find that changes in melting ice shelves may have different impacts on biological productivity between the Amundsen Sea (ASP) and Pine Island (PIP) polynyas. While ice shelves melting seems to play an important role for phytoplankton growth variability in the ASP, light and warmer waters appear to be more important in the PIP.
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