Geophysical Research Letters (Apr 2025)
Observation‐Based Estimate of Net Community Production in Antarctic Sea Ice
- Laura A. Dalman,
- Klaus M. Meiners,
- David N. Thomas,
- Florian Deman,
- Sophie Bestley,
- Sébastien Moreau,
- Kevin R. Arrigo,
- Karley Campbell,
- Matthew Corkill,
- Stefano Cozzi,
- Bruno Delille,
- Agneta Fransson,
- Alexander D. Fraser,
- Sian F. Henley,
- Julie Janssens,
- Delphine Lannuzel,
- David R. Munro,
- Daiki Nomura,
- Louisa Norman,
- Stathys Papadimitriou,
- Christina Schallenberg,
- Jean‐Louis Tison,
- Martin Vancoppenolle,
- Pier van derMerwe,
- François Fripiat
Affiliations
- Laura A. Dalman
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- Klaus M. Meiners
- Australian Antarctic Program Partnership Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- David N. Thomas
- Faculty of Biological & Environmental Sciences University of Helsinki Helsinki Finland
- Florian Deman
- Analytical, Environmental, and Geo‐Chemistry Department Vrije Universiteit Brussel Brussels Belgium
- Sophie Bestley
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- Sébastien Moreau
- Norwegian Polar Institute Tromsø Norway
- Kevin R. Arrigo
- Department of Earth System Science Stanford University Stanford CA USA
- Karley Campbell
- Department of Arctic and Marine Biology UiT the Arctic University of Norway Tromsø Norway
- Matthew Corkill
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- Stefano Cozzi
- CNR‐ISMAR Istituto di Scienze Marine Trieste Italy
- Bruno Delille
- Chemical Oceanography Unit FOCUS University of Liège Liège Belgium
- Agneta Fransson
- Norwegian Polar Institute Tromsø Norway
- Alexander D. Fraser
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- Sian F. Henley
- School of GeoSciences University of Edinburgh Edinburgh UK
- Julie Janssens
- CSIRO Environment CSIRO National Collections and Marine Infrastructure Hobart TAS Australia
- Delphine Lannuzel
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- David R. Munro
- Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder CO USA
- Daiki Nomura
- Hokkaido University Hakodate Japan
- Louisa Norman
- School of Environmental Sciences University of Liverpool Liverpool UK
- Stathys Papadimitriou
- National Oceanography Centre Southampton UK
- Christina Schallenberg
- Australian Antarctic Program Partnership Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- Jean‐Louis Tison
- Department of Geosciences Environment and Society Université Libre de Bruxelles Brussels Belgium
- Martin Vancoppenolle
- Sorbonne Université LOCEAN‐IPSL CNRS/IRD/MNHN Paris France
- Pier van derMerwe
- Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS Australia
- François Fripiat
- Department of Geosciences Environment and Society Université Libre de Bruxelles Brussels Belgium
- DOI
- https://doi.org/10.1029/2024gl113717
- Journal volume & issue
-
Vol. 52,
no. 7
pp. n/a – n/a
Abstract
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.
Keywords
