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Distribution and characterization of dissolved and particulate organic matter in Antarctic pack ice
Citation
Dumont, I and Schoemann, V and Lannuzel, D and Chou, L and Tison, JL and Becquevort, S, Distribution and characterization of dissolved and particulate organic matter in Antarctic pack ice, Polar Biology, 32, (5) pp. 733-750. ISSN 0722-4060 (2009) [Refereed Article]
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Copyright Statement
The original publication is available at http://www.springerlink.com
Official URL: http://www.springerlink.com
DOI: doi:10.1007/s00300-008-0577-y
Abstract
Distribution and composition of organic matter
were investigated in Antarctic pack ice in early spring
and summer. Accumulation of organic compounds was
observed with dissolved organic carbon (DOC) and particulate
organic carbon (POC) reaching 717 and 470 !M C,
respectively and transparent exopolymeric particles (TEP)
up to 3,071 !g Xanthan gum equivalent l¡1. POC and TEP
seemed to be inXuenced mainly by algae. Particulate
saccharides accounted for 0.2–24.1% (mean, 7.8%) of POC.
Dissolved total saccharides represented 0.4–29.6% (mean,
9.7%) of DOC, while dissolved free amino acids (DFAA)
accounted for only 1% of DOC. Concentrations of TEP
were positively correlated with those of saccharides.
Monosaccharides (d-MCHO) dominated during winter–early
spring, whereas dissolved polysaccharides did in spring–
summer. DFAA were strongly correlated with d-MCHO,
suggesting a similar pathway of production. The accumulation
of monomers in winter is thought to result from limitation
of bacterial activities rather than from the nature of the
substrates.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | Sea ice, Organic carbon, Monosaccharides, Polysaccharides, Amino acids, TEP |
Research Division: | Environmental Sciences |
Research Group: | Ecological applications |
Research Field: | Ecosystem function |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Adaptation to climate change |
Objective Field: | Climate change adaptation measures (excl. ecosystem) |
UTAS Author: | Lannuzel, D (Associate Professor Delphine Lannuzel) |
ID Code: | 62630 |
Year Published: | 2009 |
Web of Science® Times Cited: | 27 |
Deposited By: | CRC-Antarctic Climate & Ecosystems |
Deposited On: | 2010-03-13 |
Last Modified: | 2010-05-14 |
Downloads: | 1 View Download Statistics |
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