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Broad-scale predictability of carbohydrates and exopolymers in Antarctic and Arctic sea ice

Underwood, Graham JC and Aslam, Shazia N and Michel, Christine and Niemi, Andrea and Norman, Louiza and Meiners, Klaus M and Laybourn-Parry, Johanna and Paterson, Harriet and Thomas, David N (2013) 'Broad-scale predictability of carbohydrates and exopolymers in Antarctic and Arctic sea ice.' Proceedings of the National Academy of Sciences, 110 (39). pp. 15734-15739. ISSN 0027-8424

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<jats:title>Significance</jats:title> <jats:p>Many marine microalgae and bacteria secrete polysaccharide gels (exopolymers) in response to environmental stresses, such as the freezing temperatures and salt concentrations that organisms experience when in sea ice. This study of sea ice cores from both the Antarctic and Arctic identified compelling relationships between ice thickness and salinity, algal biomass, and the concentration of polysaccharides in the ice. Knowing the first three parameters, we were able to predict the polysaccharide concentrations of the ice. This predictability is the first step in estimating the importance of such secretions to the organic carbon content of the millions of square kilometers of the ice-covered Arctic and Southern Oceans.</jats:p>

Item Type: Article
Uncontrolled Keywords: algae; microbial; biogeochemistry; global relationships
Subjects: Q Science > QR Microbiology
Divisions: Faculty of Science and Health
Faculty of Science and Health > Life Sciences, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 17 Sep 2013 14:42
Last Modified: 18 Aug 2022 11:15

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