Articles | Volume 18, issue 19
https://doi.org/10.5194/bg-18-5555-2021
https://doi.org/10.5194/bg-18-5555-2021
Research article
 | 
14 Oct 2021
Research article |  | 14 Oct 2021

Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica

Kate E. Ashley, Xavier Crosta, Johan Etourneau, Philippine Campagne, Harry Gilchrist, Uthmaan Ibraheem, Sarah E. Greene, Sabine Schmidt, Yvette Eley, Guillaume Massé, and James Bendle

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Cited articles

Allen, E. E. and Bartlett, D. H.: Structure and regulation of the omega-3 polyunsaturated fatty acid synthase genes from the deep-sea bacterium Photobacterium profundum strain SS9The GenBank accession numbers for the sequences reported in this paper are AF409100 and AF467805, Microbiology, 148, 1903–1913, https://doi.org/10.1099/00221287-148-6-1903, 2002. 
Allen, E. E., Facciotti, D., and Bartlett, D. H.: Monounsaturated but Not Polyunsaturated Fatty Acids Are Required for Growth of the Deep-Sea Bacterium Photobacterium profundum SS9 at High Pressure and Low Temperature, Appl. Environ. Microbiol., 65, 1710–1720, https://doi.org/10.1128/aem.65.4.1710-1720.1999, 1999. 
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We explore the potential for the use of carbon isotopes of algal fatty acid as a new proxy for past primary productivity in Antarctic coastal zones. Coastal polynyas are hotspots of primary productivity and are known to draw down CO2 from the atmosphere. Reconstructions of past productivity changes could provide a baseline for the role of these areas as sinks for atmospheric CO2.
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