| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5163014 | Organic Geochemistry | 2009 | 15 Pages |
Abstract
Differences in OM degradation processes are reflected in higher chlorin index values in the Brienz sediments but higher saturated vs. unsaturated n-FAs in the core from Lugano. Higher concentrations of branched chain FAs and 16:1Ï7 n-FA, as well as enhanced 18:1Ï7/18:1Ï9 n-FA, are consistent with enhanced bacterial biomass in the Lugano water column or sediments. The preservation of phytol seems to be enhanced in sediments with a high relative contribution of land plant OM. Major factors affecting OM accumulation in the lakes are differences in OM sources (i.e. terrestrial OM vs. autochthonous production), extent of bacterial activity and most likely oxygen availability in the water column.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Achim Bechtel, Carsten J. Schubert,