Articles | Volume 13, issue 12
Biogeosciences, 13, 3833–3846, 2016
https://doi.org/10.5194/bg-13-3833-2016
Biogeosciences, 13, 3833–3846, 2016
https://doi.org/10.5194/bg-13-3833-2016

Research article 01 Jul 2016

Research article | 01 Jul 2016

Identification and analysis of low-molecular-weight dissolved organic carbon in subglacial basal ice ecosystems by ion chromatography

Emily C. O'Donnell et al.

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Cited articles

Anesio, A. M., Hodson, A. J., Fritz, A., Psenner, R., and Sattler, B.: High microbial activity on glaciers: importance to the global carbon cycle, Global Change Biol., 15, 955–960, https://doi.org/10.1111/j.1365-2486.2008.01758.x, 2009.
Barker, J. D., Sharp, M. J., Fitzsimons, S. J., and Turner, R. J.: Abundance and dynamics of dissolved organic carbon in glacier systems, Arct. Antarct. Alp. Res., 38, 163–172, https://doi.org/10.1657/1523-0430(2006)38[163:AADODO]2.0.CO;2, 2006.
Barker, J. D., Sharp, M. J., and Turner, R. J.: Using synchronous fluorescence spectroscopy and principal component analysis to monitor dissolved organic matter dynamics in a glacier system, Hydrol. Process., 23, 1487–1500, https://doi.org/10.1002/hyp.7274, 2009.
Barker, J. D., Klassen, J., Sharp, M. J., Fitzsimons, S. J., and Turner, R. J.: Detecting biogeochemical activity in basal ice using fluorescence spectroscopy, Ann. Glaciol., 51, 47–55, https://doi.org/10.3189/172756411795931967, 2010.
Bhatia, M., Sharp, M., and Foght, J.: Distinct bacterial communities exist beneath a high arctic polythermal glacier, Appl. Environ. Microbiol., 72, 5838–5845, https://doi.org/10.1128/AEM.00595-06, 2006.
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Short summary
We use a novel ion chromatographic analysis that provides the first identification and quantification of major low-molecular-weight dissolved organic carbon (LMW-DOC) compounds in basal ice. LMW-DOC concentrations were dependent on the bioavailability of the overridden organic carbon, which in turn was influenced by the type of overridden material. The overridden material may thus act as a direct (abiotic leaching) and indirect (microbial cycling) source of DOC to the subglacial environment.
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