Overview

DynaMOS intends to make a significant contribution in reducing uncertainties of the soil carbon reservoir estimates and better evaluate soil carbon dynamics at the 0-10 years and 10-1000 years time-scales. DynaMOS aims at both acquiring new data and providing new generations of soil carbon dynamic model by introducing soil organic matter chemistry. It is based on stable and radioactive carbon isotopes determinations on specific compounds and valorization of ORE databases.
Different experimental environments are considered to get the most appropriate data and to ensure the constrains on model input: C3/C4 vegetation change, 13C and bomb 14C-labeling to constrain the time factor, natural constant beech forest to get global and molecular 13C fractionation associated to degradation and well-known soils to model organic matter vertical distribution.

DynaMOS is ambitious and offers a high level of genericity in four of its aspects
- It proposes advances at the same time on the three fronts of methodologies, mechanisms understanding and modeling.
- it takes into account most of the biochemical families together in a single concerted study on same sites.
- it takes into account the carbon fate on the whole timescale from 1 year to 1000 years. It aims at a common representation of forest, cropland, temperate and tropical sites.
- the generic modeling approach, by using several of the first international models, will help asserting the outputs of DynaMOS at the international level.

DynaMOS is original in the sense that the chemical composition of soil organic matter is typically a dynamic variable but has not yet been subject to quantitative dynamic representation or simulation modeling in accordance.

Outstanding

DynaMOS consortium: 1st June 2008: recruiting of Mercedes Mendez-Millan

Publication: July 2008: publication of Gauthier & Hatté (2008) G3

Publication: Jan 2011: publication of Derrien in European Journal of Soil Science

Conferences-presentations: Symposium of  the French Society of Stable Isotopes, Toulouse 25-29 oct. 2010

Co-organization of the short-course on the "stable isotope" that was held in Toulouse in october 2010, the 6th SFIS meeting.

Conferences-presentations: Soil Organic Matter - Organic matter stabilization and ecosystem functions-, Giens 19-23 sept 2010

Conferences-presentations:European Geosciences Union General Assembly, Vienna 2-7 may 2010

DynaMOS consortium: 1st Feb 2011: recruiting of Fabrice Elegbede - Modelisation of Soil Organic Matter Dynamics

Participating laboratories

Laboratoire des Sciences du Climat et de l'Environnement (LSCE), UMR CEA-CNRS-UVSQ 1572, F-911198 Gif-sur-Yvette.Contact: Christine HATTÉ, email: christine.hatte<at>lsce.ipsl.fr, tel: +33 1 6982 3512

Biogéochimie des Ecosystèmes Forestiers (BEF) , UMR INRA 1138, F-54280 Champenoux. Contact: Bernd ZELLER, email: zeller<at>nancy.inra.fr, tel: +33 3 8339 4077

Paléobiodiversite et Paléoenvironnements (CR2P), UMR UPMC/CNRS/MNHN 7207, F-75231 Paris Cedex 05. Contact: Thanh-Thuy NGUYEN TU, email: Thanh-Thuy.Nguyen-Tu<at>snv.jussieu.fr, tel: +33 1 4079 8064

Biogéochimie et écologie des milieux continentaux (BioEMCO), UMR INRA CNRS Uni. Paris VI 7618, F-78850 Thierval-Grignon. Contact: Marie-France DIGNAC, email: dignac<at>grignon.inra.fr, tel: +33 1 3081 5281

Géochimie des Sols et des Eaux (GSE), UR INRA 1119, F- 13545 Aix-en-Provence Cedex 04. Contact: Jérôme BALESDENT, email: jerome.balesdent<at>aix.inra.fr, tel: +33 4 4290 8544