Dalman, Laura A. 
ORCID: https://orcid.org/0000-0002-3931-6753; Meiners, Klaus M. ORCID: https://orcid.org/0000-0001-7118-9136; Thomas, David N. ORCID: https://orcid.org/0000-0001-8832-5907; Deman, Florian ORCID: https://orcid.org/0000-0001-6647-7360; Bestley, Sophie ORCID: https://orcid.org/0000-0001-9342-669X; Moreau, Sébastien ORCID: https://orcid.org/0000-0001-9446-812X; Arrigo, Kevin R. ORCID: https://orcid.org/0000-0002-7364-876X; Campbell, Karley ORCID: https://orcid.org/0000-0001-5008-0705; Corkill, Matthew ORCID: https://orcid.org/0000-0002-5847-3738; Cozzi, Stefano ORCID: https://orcid.org/0000-0003-0116-742X; Delille, Bruno ORCID: https://orcid.org/0000-0003-0502-8101; Fransson, Agneta ORCID: https://orcid.org/0000-0003-1403-2110; Fraser, Alexander D. ORCID: https://orcid.org/0000-0003-1924-0015; Henley, Sian F. ORCID: https://orcid.org/0000-0003-1221-1983; Janssens, Julie ORCID: https://orcid.org/0000-0003-1789-9940; Lannuzel, Delphine ORCID: https://orcid.org/0000-0001-6154-1837; Munro, David R. ORCID: https://orcid.org/0000-0002-1373-7402; Nomura, Daiki ORCID: https://orcid.org/0000-0003-3047-4023; Norman, Louisa ORCID: https://orcid.org/0000-0001-9720-4664; Papadimitriou, Stathys ORCID: https://orcid.org/0000-0001-8540-1169; Schallenberg, Christina ORCID: https://orcid.org/0000-0002-3073-7500; Tison, Jean‐Louis ORCID: https://orcid.org/0000-0002-9758-3454; Vancoppenolle, Martin ORCID: https://orcid.org/0000-0002-7573-8582; van der Merwe, Pier ORCID: https://orcid.org/0000-0002-7428-8030; Fripiat, François ORCID: https://orcid.org/0000-0002-2591-6301.
2025
Observation‐based estimate of net community production in Antarctic sea ice.
Geophysical Research Letters, 52 (7).
10.1029/2024GL113717
Antarctic sea ice is one of the largest biomes on Earth providing a critical habitat for ice algae. Measurements of primary production in Antarctic sea ice remain scarce and an observation-based estimate of primary production has not been revisited in over 30 years. We fill this knowledge gap by presenting a newly compiled circumpolar data set of particulate and dissolved organic carbon from 362 ice cores, sampled between 1989 and 2019, to estimate sea-ice net community production using a carbon biomass accumulation approach. Our estimate of 26.8–32.9 Tg C yr−1 accounts for at least 15%–18% of the total primary production in the Antarctic sea-ice zone, less than a previous observation-based estimate (63–70 Tg C yr−1) and consistent with recent modeled estimates. The results underpin the ecological significance of sea-ice algae as an early season resource for pelagic food webs.
Available under License Creative Commons Attribution Non-commercial 4.0.
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