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understanding benthic, pelagic and air-borne ecosystem interactions in shallow coastal seas

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Distribution and characterization of dissolved and particulate organic matter in Antarctic pack ice
Dumont, I.; Schoemann, V.; Lannuzel, D.; Chou, L.; Tison, J.-L.; Becquevort, S. (2009). Distribution and characterization of dissolved and particulate organic matter in Antarctic pack ice. Polar Biol. 32(5): 733-750. http://dx.doi.org/10.1007/s00300-008-0577-y
In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056
Peer reviewed article  
Beschikbaar in  Auteurs 
    Vlaams Instituut voor de Zee: Open Marine Archive 239942 [ download pdf ]
Trefwoord
    Marien/Kust
Author keywords
    Sea ice · Organic carbon · Monosaccharides · Polysaccharides · Amino acids · TEP
Auteurs  Top 
  • Dumont, I.
  • Schoemann, V.
  • Lannuzel, D.
  • Chou, L.
  • Tison, J.-L.
  • Becquevort, S.
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 µM C, respectively and transparent exopolymeric particles (TEP) up to 3,071 µg 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.
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Westbanks is a project Supported by the Belgian Science Policy (BELSPO): SSD Science for sustainable Development
General coordination: Magda Vincx & Jan Vanaverbeke
Hosted by the Flanders Marine Institute VLIZ