Publications by authors named "Ghislain Gassier"
Describing the structural complexity of seabeds is of primary importance for a number of geomorphological, hydrodynamical and ecological issues. Aiming to bring a decisive insight on the long-term development of a unified view, the present study reports on a comparative multi-site analysis of high resolution topography surveys in rough nearshore environments. The nine study sites have been selected to cover a wide variety of topographical features, including rocky and coral seabeds.
View Article and Find Full Text PDFSoil carbon stabilization is mainly driven by organo-mineral interactions. Coprecipitates, of organic matter with short-range order minerals, detected through indirect chemical extraction methods, are increasingly recognized as key carbon sequestration phases. Yet the atomic structure of these coprecipitates is still rather conceptual.
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- The forested swamps of the central Congo Basin contain about 30 billion metric tonnes of carbon in peat, but their vulnerability is not well understood.
- Peat accumulation in the region began over 17,500 years ago, with significant decomposition occurring between 7,500 and 2,000 years ago due to a drying climate that lowered the water table.
- Following 2,000 years ago, hydrologic conditions stabilized, leading to a resumption of peat accumulation; this suggests that the carbon stocks may be close to a threshold where climate change could trigger further losses.