About this Environmental Science article
Distribution and bacterial availability of dissolved neutral sugars in the South East Pacific by Sempéré, R.; Tedetti, M.; Panagiotopoulos, C.; Charrià̈re, B.; Van Wambeke, F. is a Environmental Science article available to read on EtoBox.
Abstract. The distribution and bacterial availability of dissolved neutral sugars were studied in the South East Pacific from October to December 2004 during the BIOSOPE cruise. Four contrasting stations were investigated: Marquesas Islands (MAR), the hyper-oligotrophic South Pacific Gyre (GYR), the eastern part of the Gyre (EGY), and the coastal waters associated to the upwelling area off Chile (UPW). Total (free and combined) dissolved neutral sugar (TDNS) concentrations were in the same order of magnitude at MAR (387±293 nM), GYR (206±107 nM), EGY (269±175 nM), and UPW (231±73 nM), with the highest and lowest concentrations found at MAR (30 m, 890 nM) and EGY (250 m, 58 nM), respectively. Their contribution to dissolved organic carbon (TDNS-C×DOC−1%) was generally low for all sites varying from 0.4% to 6.7% indicating that South East Pacific surface waters were relatively poor in neutral sugars. Free dissolved neutral sugar (FDNS; e.g. sugars analyzed without hydrolysis) concentrations were very low within the detection limit of our method (5–10 nM) accounting for <5% of the TDNS. In general, the predominant sugars within the TDNS pool were glucose, xylose, arabinose, and galact
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- Author
- Sempéré, R.; Tedetti, M.; Panagiotopoulos, C.; Charrià̈re, B.; Van Wambeke, F.
- Publisher
- Copernicus GmbH; Göttingen: Copernicus Publ. (ISSN 1726-4189)
- Published
- 2008
- Language
- EN
- Field
- Environmental Science (Physical Sciences)