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Observation‐based estimate of net community production in Antarctic sea ice
Dalman, L.A.; Meiners, K.M.; Thomas, D.N.; Deman, F.; Bestley, S.; Moreau, S.; Arrigo, K.R.; Campbell, K.; Corkill, M.; Cozzi, S.; Delille, B.; Fransson, A.; Fraser, A.D.; Henley, S.F.; Janssens, J.; Lannuzel, D.; Munro, D.R.; Nomura, D.; Norman, L.; Papadimitriou, S.; Schallenberg, C.; Tison, J.-L.; Vancoppenolle, M.; van der Merwe, P.; Fripiat, F. (2025). Observation‐based estimate of net community production in Antarctic sea ice. Geophys. Res. Lett. 52(7): e2024GL113717. https://dx.doi.org/10.1029/2024gl113717
In: Geophysical Research Letters. American Geophysical Union: Washington. ISSN 0094-8276; e-ISSN 1944-8007, meer
Peer reviewed article  
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Trefwoord
    Marien/Kust
Author keywords
    ice algae;net community production;organic carbon;sea ice;Antarctica;DISSOLVED ORGANIC-MATTER;SOUTHERN-OCEAN;BOTTOM ICE;PACK ICE;GROWTH;ALGAE;PREDICTABILITY;VARIABILITY;SUBSTANCES;DRIVERS
Auteurs  Top 
  • Dalman, L.A.
  • Meiners, K.M.
  • Thomas, D.N.
  • Deman, F., meer
  • Bestley, S.
  • Moreau, S., meer
  • Arrigo, K.R.
  • Campbell, K.
  • Corkill, M.
  • Cozzi, S.
  • Delille, B., meer
  • Fransson, A.
  • Fraser, A.D.
  • Henley, S.F.
  • Janssens, J.
  • Lannuzel, D.
  • Munro, D.R.
  • Nomura, D.
  • Norman, L.
  • Papadimitriou, S.
  • Schallenberg, C.
  • Tison, J.-L., meer
  • Vancoppenolle, M., meer
  • van der Merwe, P.
  • Fripiat, F., meer
Abstract
    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.
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