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MSEC / MultiScale Environmental Changes


  • PhD, HDR, Hydro-geochemist, DR IRD
  • Lab. Address: 14 avenue Edouard Belin, 31400 Toulouse, FRANCE
  • Phone: +33 (0)5 61 33 26 64 / +33 (0)6 16 04 19 38

Main fields of research and expertise

Olivier RIBOLZI has 20 years experience in the field of hydro-geochemistry. The overall aim of his research is to contribute to an interdisciplinary understanding of the hydrological, erosional and biogeochemical functioning of catchment systems and the hydroecology of associated river networks. His specific research themes are: runoff generation processes; stream-chemistry; groundwater-surface water interactions; soil erosion. His climatic contexts of experience range from Mediterranean (Southern France), Sahelian (Northern Burkina Faso) to humid sub-tropical (Northern Laos). He conducts experimental studies using rainfall simulations, classical hydrological monitoring, and isotopic and chemical tracing.


Recent publications (2010-2014)

de Rouw, A., Huon, S., Soulileuth, B.; Jouquet, P.; Pierret, A.; Ribolzi, O.; Valentin, C.; Bourdon, E.; Chantharath, B., 2010 - Possibilities of carbon and nitrogen sequestration under conventional tillage and no-till cover crop farming (Mekong valley, Laos). Agriculture, Ecosystems and Environment, 136, 148–161. DOI: 10.1016/j.agee.2009.12.013

Ribolzi, O., Cuny, J., Sengsoulichanh, P., Mousquès, C., Soulileuth, B., Pierret, A., Huon, S., Sengtaheuanghoung O., 2010. Land use and water quality along a Mekong tributary in Northern Lao PDR. Environmental Management, 47 (2), 291-302. DOI: 10.1007/s00267-010-9593-0

Ribolzi, O., Patin, J., Bresson, L.M., Latsachack, K.O., Mouche, E., Sengtaheuanghoung, O., Silvera, N., Thiébaux, J.P., Valentin, C., 2011 - Impact of slope gradient on soil surface features and infiltration on steep slopes in northern Laos. Geomorphology, 127, 53–63. DOI: 10.1016/j.geomorph.2010.12.004

Patin, J., Mouche, E., Ribolzi, O., Chaplot, V., Sengtahevanghoung, O., Latsachak, K.O., Soulileuth, B., Valentin, C., 2012 - Analysis of runoff production at the plot scale during a long-term survey of a small agricultural catchment in Lao PDR. Journal of Hydrology, 426-427, 79-92. DOI: 10.1016/j.jhydrol.2012.01.015

Niang, D., Mermoud, A., Yacouba, H., Ribolzi, O., 2012 - Temporal evolution of the hydrodynamic behaviour of sandy deposits in the Sahelian part of Burkina Faso - Journal of Soil Science and Environmental Management, 3(12), 297–307. DOI: 10.5897/JSSEM11.156

Becerra, S., Peltier, A., Antoine, Labat, D., J.-M., Chorda, J., Ribolzi, O., Merlet, N., Daupras, F., Dartus, D., 2013 - Understanding people's behaviour under risk of moderate flooding. Case study of a peri-urban region of Toulouse, southwest France. Hydrological Sciences Journal, 58, 945-965. DOI: 10.1080/02626667.2013.786181

Maïga-Yaleu, S., Guiguemde, I., Yacouba, H., Karambiri, H., Ribolzi, O., Barry, A., Ouedraogo, R., Chaplot, V., 2013 - Soil crusting impact on Soil Organic Carbon losses by water erosion. Catena, 107, 26-34. DOI: 10.1016/j.catena.2013.03.006

Chaplot, V., Ribolzi, O., 2013 - Hydrograph separation to improve understanding of Dissolved Organic Carbon Dynamics in Headwater catchments. Hydrological processes. DOI: 10.1002/hyp.10010

Gourdin, E., Evrard, O., Huon, S., Reyss, J.L., Ribolzi, O., Bariac, T., Sengtaheuanghoung, O., Ayrault, S. 2014 - Spatial and temporal variability of 7Be and 210Pb wet deposition during four successive monsoon storms in a catchment of northern Laos. Journal of Environmental Radioactivity, 136, 195-205.

Gourdin, E., Evrard, O., Huon, S., Lefèvre, I., Ribolzi, O., Reyss, J.L., Bariac, T., Sengtaheuanghoung, O., Ayrault, S., 2014 - Suspended sediment dynamics in a Southeast Asian mountainous catchment: combining river monitoring and fallout radionuclide analyses. Journal of Hydrology. 519, 1811-1823. /

Maïga-Yaleu, S.B., Chivenge, P., Yacouba, H., Guiguemde, I., Karambiri, H., Ribolzi, O., Bary, A., Chaplot, V., 2015 - Impact of sheet erosion mechanisms on organic carbon losses from crusted soils in the Sahel. Catena. 126, 60-67.

Gourdin, E., Huon, S., Evrard, O. Ribolzi, O., Bariac, T., Sengtaheuanghoung, O., Ayrault, S., 2015 - Sources and export of particle-borne organic matter during a monsoon flood in a catchment of northern Laos. Biogeosciences. 12, 1073–1089. doi:10.5194/bg-12-1073-2015.