Observation-Based Estimate of Net Community Production in Antarctic Sea Ice

Antarctica; ice algae; net community production; organic carbon; sea ice; Antarctic sea ice; Data set; Ice algae; Knowledge gaps; Measurements of; Net community productions; Organics; Particulate organic carbon; Primary production; Geophysics; Earth and Planetary Sciences (all)

Abstract :

[en] 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.

Research Center/Unit :

FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège

Disciplines :

Earth sciences & physical geography

Author, co-author :

Dalman, Laura A. ; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia ; Australian Antarctic Program Partnership, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia

Meiners, Klaus M. ; Australian Antarctic Program Partnership, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia ; Australian Antarctic Division, Department of Climate Change, Energy, the Environment and Water, Kingston, Australia ; Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, Australia

Thomas, David N. ; Faculty of Biological & Environmental Sciences, University of Helsinki, Helsinki, Finland

Deman, Florian ; Analytical, Environmental, and Geo-Chemistry Department, Vrije Universiteit Brussel, Brussels, Belgium

Bestley, Sophie ; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia ; Australian Antarctic Program Partnership, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia ; Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, Australia

Moreau, Sébastien ; Norwegian Polar Institute, Tromsø, Norway

Arrigo, Kevin R. ; Department of Earth System Science, Stanford University, Stanford, United States

Campbell, Karley ; Department of Arctic and Marine Biology, UiT the Arctic University of Norway, Tromsø, Norway

Corkill, Matthew ; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia

Cozzi, Stefano ; CNR-ISMAR Istituto di Scienze Marine, Trieste, Italy

More authors (15 more)

Language :

English

Title :

Observation-Based Estimate of Net Community Production in Antarctic Sea Ice

Publication date :

16 April 2025

Journal title :

Geophysical Research Letters

ISSN :

0094-8276

eISSN :

1944-8007

Publisher :

John Wiley and Sons Inc

Volume :

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2024GL113717

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique
BELSPO - Belgian Science Policy Office
Communauté Française de Belgique - Actions de Recherche Concertées

Funding text :

We thank all data contributors: Stephen Ackley, Amber Annett, Sylvie Becquevort, Frank Dehairs, Gerhard Dieckmann, Isabelle Dumont, Robert Dunbar, Luis Paulo Duprat, Raja Ganeshram, David Garrison, Letterio Guglielmo, Louis Legendre, Richard Rivkin, Arnout Roukaerts, V\u00E9ronique Schoemann,\u00A0Jacqueline Stefels and Nadja Steiner. This compilation is a product of the Biogeochemical Exchange Processes at Sea Ice Interfaces (BEPSII) community and SCOR Working Group 152 ECV-Ice. This project was supported through the Australian Antarctic Program Partnership (AAPP; project ID ASCI000002), an Australian Research Council (ARC) Special Research Initiative (SR200100008), and Australian Antarctic Science project #4635. LAD is supported by a University of Tasmania Graduate Research Scholarship and the AAPP. ADF and DL are funded by ARC Future Fellowships FT230100234 and FT190100688, respectively. SFH was supported by UK Natural Environment Research Council (NE/K010034/1). DN is supported by the Japan Society for the Promotion of Science (24H02341). SM is supported by the Research Council of Norway projects I-CRYME (335512), and iC3 (332635) and by European Union project WOBEC (350906). Belgian funding from ARC-CWB SIBCLIM, BELSPO BIGSOUTH (SD/CA05A) and F.R.S.-FNRS ISOGGAP (T-0268-16) projects. BD is supported by F.R.S-FNRS. The Oden Southern Ocean (OSO) Expedition 2008/09 was funded by the Swedish Science Council (VR) projects: DNR 2008\u20136226, 2008\u20136228, and 2009\u20132994. KC is supported by RCN project BREATHE (325405) and WOBEC. Open access publishing facilitated by University of Tasmania, as part of the Wiley - University of Tasmania agreement via the Council of Australian University Librarians.We thank all data contributors: Stephen Ackley, Amber Annett, Sylvie Becquevort, Frank Dehairs, Gerhard Dieckmann, Isabelle Dumont, Robert Dunbar, Luis Paulo Duprat, Raja Ganeshram, David Garrison, Letterio Guglielmo, Louis Legendre, Richard Rivkin, Arnout Roukaerts, V\u00E9ronique Schoemann, Jacqueline Stefels and Nadja Steiner. This compilation is a product of the Biogeochemical Exchange Processes at Sea Ice Interfaces (BEPSII) community and SCOR Working Group 152 ECV\u2010Ice. This project was supported through the Australian Antarctic Program Partnership (AAPP; project ID ASCI000002), an Australian Research Council (ARC) Special Research Initiative (SR200100008), and Australian Antarctic Science project #4635. LAD is supported by a University of Tasmania Graduate Research Scholarship and the AAPP. ADF and DL are funded by ARC Future Fellowships FT230100234 and FT190100688, respectively. SFH was supported by UK Natural Environment Research Council (NE/K010034/1). DN is supported by the Japan Society for the Promotion of Science (24H02341). SM is supported by the Research Council of Norway projects I\u2010CRYME (335512), and iC3 (332635) and by European Union project WOBEC (350906). Belgian funding from ARC\u2010CWB SIBCLIM, BELSPO BIGSOUTH (SD/CA05A) and F.R.S.\u2010FNRS ISOGGAP (T\u20100268\u201016) projects. BD is supported by F.R.S\u2010FNRS. The Oden Southern Ocean (OSO) Expedition 2008/09 was funded by the Swedish Science Council (VR) projects: DNR 2008\u20136226, 2008\u20136228, and 2009\u20132994. KC is supported by RCN project BREATHE (325405) and WOBEC. Open access publishing facilitated by University of Tasmania, as part of the Wiley \u2010 University of Tasmania agreement via the Council of Australian University Librarians.

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