| HAL : hal-00089809, version 1 |
| DOI : 10.1016/S0146-6380(00)00138-8 |
| Fiche détaillée | Récupérer au format |
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| Organic Geochemistry 32 (2001) 151-162 |
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| Neutral carbohydrate geochemistry of particulate material (trap and core sediments) in an eutrophic lake (Aydat, France) |
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| SYLVIE OGIER 1Jean-Robert Disnar 2 |
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| (2001) |
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| Carbohydrate compositions were determined on sinking particles and core samples from eutrophic lake Aydat. Carbohydrate fluxes indicate that phytoplanktonic production is the main organic matter (OM) source whereas the monosaccharides concentrations normalised to OC contents (TImage) mostly reflect degradation. The abundance of rhamnose in all samples, its increasing fluxes (together with fucose) with increasing water depth, and its strong decrease in the top 5 cm of the bottom sediments mark the intense activity of the microbiota. The almost complete removal of sugars in the water and top sediment indicates very little contribution to the preserved OM stock. |
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| 1 : | Morphodynamique continentale et côtière (MCC) |
| CNRS : UMR6143 – INSU – Université de Caen Basse-Normandie – Université de Rouen | |
| 2 : | Institut des Sciences de la Terre d'Orléans (ISTO) |
| CNRS : UMR6113 – INSU – Université d'Orléans | |
| 3 : | Microorganismes : génome et environnement (LMGE) |
| CNRS : UMR6023 – Université Blaise Pascal - Clermont-Ferrand II – Université d'Auvergne - Clermont-Ferrand I | |
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| domaine | : | Planète et Univers/Sciences de la Terre/Géochimie Sciences de l'environnement/Milieux et Changements globaux |
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| Monosaccharides – Carbohydrates – Sediment traps – Sinking particles – Eutrophic lake – Aydat lake |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00089809, version 1 | |
| http://hal-insu.archives-ouvertes.fr/hal-00089809 | |
| oai:hal-insu.archives-ouvertes.fr:hal-00089809 | |
| Contributeur : Nathalie Pothier | |
| Soumis le : Jeudi 16 Novembre 2006, 10:03:35 | |
| Dernière modification le : Jeudi 2 Février 2012, 14:56:50 | |