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

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-04-01 DOI:10.1029/2024GL113717

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 der Merwe, François Fripiat

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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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来源期刊

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.