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MSEC / MultiScale Environmental Changes

Jean-Louis JANEAU

MSEC leader in Thailand

Main fields of research and expertise

Jean-Louis Janeau has 32 years’ experience in the field of erosion and hydrodynamic studies influencing the ecosystem ecologies. He is an IRD engineering specialist for hydrophysical measurements and erosion parameters in the natural environment and cropped areas using rainfall and runoff simulators and stream flow studies. From 1984 to 1999, he developed many technical innovations for the runoff simulator, apparatus for taking pictures in the vertical position, and traps for in situ sediment samples. He is a soil crusts’ cartographer with experience in different surveys in West Africa, Mexico, and Ecuador where he was posted for 6, 6, and 4 years respectively. He was a consulting engineer in soil sciences for natural disasters in Ecuador (El Niño and landslides) and he is a consulting engineer in soil sciences for hydrophysical measurements in Asia and Central America. Jean-Louis has published his research findings in peer-reviewed journals (34 articles and 1 book editor and 4 chapter of book) and conference proceedings and he has presented 10 communications at international conferences. He is an advisor for students (engineers and PhD students) and partners (workshop training) in Asia and Central America. Since 2000, he has been based at IWMI–IRD Thailand. Since 2004, he is having been involved in the MSEC project with specific focus on off-site effects (soil losses, the siltation and the water quality of reservoirs) and he leads this research programme in Thailand. November 2006-July 2010, he was visiting scientist at the School of Bioresources Engineering and Environmental Hydrology - University of KwaZulu Natal, South Africa with focus about land degradation and eco-hydrology. From Sept. 2010 to August 2015, he was visiting scientist to the Soil and Fertilizers Research Institute in Hanoi, Vietnam. From Sept 2015 to March 2016, he is lecturer in water and soil conservation at Tours University (France) and environmental engineer at Institute of ecology and environmental sciences (Paris – France). Since April 2016, he his visiting scientist at Land Department Development in Bangkok, Thailand to participate at watershed research project, hydrology and erosion processes.

Keys words: ecology - hydrodynamics - infiltration/runoff - metrology - soil degradation and erosion processes at different scales (from 1m2 to watershed) – watershed management

Main references in hydro-ecology

Nguyen Hong Thi Mai, Billen J., Garnier J., Janeau J-L, Thi Phuong Quynh Le, Rochelle-Newall E. 2016. Seasonal variability of faecal indicator bacteria numbers and die-off rates in the Red River basin, North Viet Nam. Scientific Reports 6, 21644; doi: 10.1038/srep21644.

Rochelle-Newall E., Ribolzi O., Viguier M., Chanthamousone Thammahacksa, Silvera N., Keooudone Latsachack, Rinh Pham Dinh, Piyapong Naporn Hai Tran Sy, Bounsamay Soulileuth,,Nikom Hmaimum, Pem Sisouvanh, Robain H., Janeau J.L., Valentin C., Boithias L., Pierret A.2016. Effect of land use and hydrological processes on Escherichia coli concentrations in streams of tropical, humid headwater catchments. Scientific Reports| 6:32974 | DOI: 10.1038/srep32974

Le, H. T., Ho, C. T., Trinh, Q. H., Trinh, D. A., Luu, M. T. N., Tran, H. S., Orange, D., Janeau, J. L., Merroune, A., Rochelle-Newall, E. & Pommier, T., 2016 Responses of Aquatic Bacteria to Terrestrial Runoff: Effects on Community Structure and Key Taxonomic Groups. Frontiers in Microbiology. 7.

Duc Anh, T., L. Thi Nguyet Minh, T. Quan Hong, T. Hai Sy, T. Tien Minh, L. Thi Phuong Quynh, D. Thuy Thi, D. Orange, J. L. Janeau, T. Pommier & E. Rochelle-Newall, 2016. Impact of terrestrial runoff on organic matter, trophic state, and phytoplankton in a tropical, upland reservoir. Aquatic Sciences 78(2):367-379.

Thi Phuong Ngo, Dang Dinh Kim, Thuy Thu D., Jouquet, P., Janeau, J.-L. & Rumpel, C., 2016 Mixing of biochar with organic amendments reduces carbon removal after field exposure under tropical conditions. Ecological Engineering 91: (378-380). doi: 10.1016/j.ecoleng.2016.01.011

Janeau, J. L., Grellier, S. & Podwojewski, P., 2015 Influence of rainfall interception by endemic plants versus short cycle crops on water infiltration in high altitude ecosystems of Ecuador. Hydrology Research. 46(6), 1008-1018. DOI:10.2166/nh.2015.203

Podwojewski P., Poulenard J. & Janeau J.L., 2015 Effects of land-use changes on soil properties: volcano watershed in Quito, Ecuador.  In: Romeo R. (ed.), Vita A. (ed.), Manuelli S. (ed.), Zanini E. (ed.), Freppaz M. (ed.), Stanchi S. (ed.) Understanding mountain soils: a contribution from mountain areas to the International Year of Soils 2015. Rome: FAO, 2015, p. 95-96. ISBN 978-92-5-108804-3.

Rochelle Newall Emma, Do Duy Phai, Janeau Jean-Louis, Jouquet Pascal, Henry des Tureaux Thierry, Maeght Jean-Luc, Nguyen Duy Phuong, Nguyen Van Thiet, Orange Didier, Pham Dinh Rinh, Podwojewski Pascal, Ribolzi Olivier, De Rouw Anneke, Silvera Norbert, Doan Thi Thuy, Tran Minh Tien, Tran Duc Toan, Tran Sy Hai, Valentin Christian. Ket qua hop tác nghiên cuu ve quan ly tài nguyên đat giua vien nghiên cuu phát trien pháp và vien tho nhưong nông hóa. In : Hoi Thao Quoc Gia Dat Viet Nam Hiên Trang Su Dung Va Thach Thuc. Hanoï : Nhà XuẤt Ban Nông Nghiêp [Agriculture Publ. House], 2015, p. 266-273. Hoi Thao Quoc Gia Dat Viet Nam Hiên Trang Su Dung Va Thach Thuc [Conférence Nationale sur l'Utilisation des Terres au Viet Nam] ; , Hanoï (VTN), 2015/10/11. ISBN 9786046021711

Thuy Thu, D., Henry-des-Tureaux, T., Rumpel, C., Janeau, J.-L. & Jouquet, P., 2015 Impact of compost, vermicompost and biochar on soil fertility, maize yield and soil erosion in Northern Vietnam: A three year mesocosm experiment. Science of the Total Environment. 514, 147-154.

Duc Anh Trinh, Thi Nguyet Minh Luu, Quan Hong Trinh, Hai Sy Tran, Tien Minh Tran, Thi Phuong Quynh Le, Thuy Thi Duong, Orange D., Janeau J-L, Pommier T., Rochelle-Newall E (2015) Impact of terrestrial runoff on organic matter, trophic state, and phytoplankton in a tropical, upland reservoir. Aquatic Sciences pp 1-13. DOI 10.1007/s00027-015-0439-y

Janeau J.L., Gillard L.C., Grellier S., Jouquet P., Thi Phuong Quynh Le, Thi Nguyet Minh Luu, Quoc Anh Ngo Orange D., Dinh Rinh Pham, Duc Toan Tran, Sy Hai Tran, Anh Duc Trinh, Valentin C., Rochelle-Newall E. 2014. Soil erosion, dissolved organic carbon and nutrient losses under different land use systems in a small catchment in northern Vietnam. Agricultural Water Management. 146: 314-323. DOI: 10.1016/j.agwat.2014.09.006

Pommier, T., Merroune, A., Bettarel, Y., Got, P., Janeau, J.-L., Jouquet, P., Thu, T. D., Toan, T. D. & Rochelle-Newall, E., 2014 Off-site impacts of agricultural composting: role of terrestrially derived organic matter in structuring aquatic microbial communities and their metabolic potential. Fems Microbiology Ecology. 90(3), 622-632.

Grellier S., Florsch, N., Janeau J.L., Podwojewski P., Camerlynck C., Barot S., Ward D., Lorentz S., 2014. Soil clay influences Acacia encroachment in a South African grassland. Ecohydrology. 7(6), 1474-1484. DOI: 10.1002/eco.1472

Thu Doan T., Bouvier C., Bettarel Y., Bouvier T., Henry-des-Tureaux T., Janeau J.L., Lamballe P., Van Nguyen B., Jouquet P., 2014. Influence of buffalo manure, compost, vermicompost and biochar amendments on bacterial and viral communities in soil and adjacent aquatic systems. Applied Soil Ecology 73: 78-86.

Valentin, C., Boonsaner, A., Janeau, J. L., Jouquet, P., des Tureaux, T. H., Huon, S., Latsachack, K., Le Troquer, Y., Maeght, J. L., Orange, D., Rinh, P. D., Pierret, A., Podwojewski, P., Ribolzi, O., de Rouw, A., Sengtaheuanghoung, O., Silvera, N., Robain, H., Soulileuth, B., Thothong, W., Toan, T. D. & Hai, T. S., 2014. Lessons from long-term monitoring of soil erosion in three southeast Asian agricultural catchments undergoing rapid land-use changes. In: T. M. Daniell, H. A. J. VanLanen, S. Demuth, G. Laaha, E. Servat, G. Mahe, J. F. Boyer, J. M. Paturel, A. Dezetter & D. Ruelland (Eds.), Hydrology in a Changing World: Environmental and Human Dimensions. IAHS Publication. Int Assoc Hydrological Sciences, Wallingford, pp. 303-308.

Grellier S., Ward D., Janeau J.L., Podwojewski P., Lorentz S., Abbadie L., Valentin C., Barot S. 2013. Positive versus negative environmental impacts of tree encroachment in South Africa. Acta Oecologica 53: 1-10.

Grellier S, Janeau JL, Thothong W, Boonsaner A, Bonnet MP, Lagane C, Seyler P. 2013. Seasonal effect on trace metal elements behaviour in a reservoir of northern Thailand. Environmental Monitoring and Assessment 185: 5523-5536. DOI: 10.1007/s10661-012-2964-7.

Grellier S, Kemp J, Janeau JL, Florsch N, Ward D, Barot S, Podwojewski P, Lorentz S, Valentin C. 2012. The indirect impact of encroaching trees on gully extension: A 64-year study in a sub-humid grassland of South Africa. Catena 98: 110-119. 10.1016/j.catena.2012.07.002.

Jouquet P., Janeau J.L., Pisano A., Tran Sy Hai., Orange D., Luu Thi Nguyet Minh, Valentin C., 2012. Influence of earthworms and termites on runoff and erosion in a tropical steep slope fallow in Vietnam: A rainfall simulation experiment. Applied Soil Ecology 61: 161– 168.

Grellier S., Janeau J.L., Barot S., Ward D., 2012. Grass competition is more important than seed ingestion by livestock for Acacia recruitment in South Africa. Plant Ecology 213: 899–908.

Chaplot V., Brown J., Dlamini P., Eustice T., Janeau J.L., Jewitt G., Lorentz S., Martin L., Nontokozo-Mchunu C., Oakes E., Podwojewski P., Revil-Baudard S., Rumpel C., Zondi N. 2011. Rainfall simulation to identify the storm-scale mechanisms of gully bank retreat. Agriculture Water Management. 98, 1704-1710.

Janeau J.L., Bricquet JP, Planchon O, Valentin C (2003) Soil crusting and infiltration on steep slopes in northern Thailand. European Journal of Soil Science 54:543-553

Janeau J.L., Mauchamp A, Tarin G (1999) The soil surface characteristics of vegetation stripes in northern Mexico and their influences on the system hydrodynamics - an experimental approach. Catena 37:165-173.



Grünberger O., Reyes-Gómez V.M., Janeau J.L., 2005. Las playas del desierto Chihuahuense (parte mexicana). Influencia de las sales en ambientes árido y semiárido. Ediciones Instituto de Ecologia, A.C. - IRD Francia. Xalapa, Veracruz, Mexico. 355p. (French and Spanish versions).


Book Chapter

Grellier S., Seyler P., Petitjean C., Bonnet M.P., Thothong W., Janeau J.L., 2015. Heavy metals contamination in the ecosystem of Mae Tang Reservoir in northern Thailand. In Socio-Ecological Dimensions of Infectious Diseases in Southeast Asia, Part II, chapter 5, pp 57-74. Springer Book edited by Morand et al. ISBN 978-981-287-526-6 and ISBN 978-981-287-527-3 (eBook) - DOI 10.1007/978-981-287-527-3


Vincent Herbreteau, Kraichat Tantrakarnapa, Wasana Khaungaew, Jean-Louis Janeau, 2015. Water and Health: What Is the Risk and Visible Burden of the Exposure to Environmental Contaminations? Insights from a Questionnaire-Based Survey in Northern Thailand. In Socio-Ecological Dimensions of Infectious Diseases in Southeast Asia, Part II, chapter 5, pp 75-88. Springer Book edited by Morand et al. ISBN 978-981-287-526-6 and ISBN 978-981-287-527-3 (eBook) - DOI 10.1007/978-981-287-527-3