A5044110337- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Hydrology and Sediment Transport Processes
- Fecal contamination and water quality
- Urban Stormwater Management Solutions
- Groundwater and Watershed Analysis
- Flood Risk Assessment and Management
- Agriculture and Rural Development Research
- Child Nutrition and Water Access
- Groundwater flow and contamination studies
- Aeolian processes and effects
- Geophysical and Geoelectrical Methods
- Groundwater and Isotope Geochemistry
- Soil and Unsaturated Flow
- Water Quality and Pollution Assessment
- Burkholderia infections and melioidosis
- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Geophysical Methods and Applications
- Southeast Asian Sociopolitical Studies
- Water Governance and Infrastructure
- African Botany and Ecology Studies
- Soil and Water Nutrient Dynamics
- Hydrological Forecasting Using AI
- Chemical Looping and Thermochemical Processes
Université de Toulouse
2013-2024
Université Toulouse III - Paul Sabatier
2014-2024
Centre National de la Recherche Scientifique
2013-2024
Géosciences Environnement Toulouse
2014-2024
Observatoire Midi-Pyrénées
2010-2024
Institut de Recherche pour le Développement
2014-2024
Centre National d'Études Spatiales
2017
Institut de Recherche pour le Développement
2008-2010
Institut de Recherche pour le Développement
2009
Forestry Research Institute
2008
Abstract. The humid tropics are exposed to an unprecedented modernisation of agriculture involving rapid and mixed land-use changes with contrasted environmental impacts. Afforestation is often mentioned as unambiguous solution for restoring ecosystem services enhancing biodiversity. One consequence afforestation the alteration streamflow variability which controls habitats, water resources, flood risks. We demonstrate that by tree planting or natural forest regeneration can induce opposite...
Soil erosion supplies large quantities of sediments to rivers Southeastern Asia. It reduces soil fertility agro-ecosystems located on hillslopes, and it degrades, downstream, water resource quality leads the siltation reservoirs. An increase in surface area covered with commercial perennial monocultures such as teak plantations is currently observed at expanse traditional slash-and-burn cultivation systems steep montane environments these regions. The impacts land-use change hydrological...
Abstract Lack of access to clean water and adequate sanitation continues be a major brake on development. Here we present the results 12-month investigation into dynamics Escherichia coli , commonly used indicator faecal contamination in supplies, three small, rural catchments Laos, Thailand Vietnam. We show that land use hydrology are controlling factors E. concentrations streamwater relative importance these two varies between dry wet seasons. In all catchments, highest were observed...
Background The global burden of diarrhea is a leading cause morbidity and mortality worldwide. In montane areas South-East Asia such as northern Laos, recent changes in land use have induced increased runoff, soil erosion in-stream suspended sediment loads, potential pathogen dissemination. To our knowledge, few studies related incidences to catchment scale hydrological factors river discharge, loads Fecal Indicator Bacteria (FIB) Escherichia coli, together with sociological hygiene...
Burkholderia pseudomallei is the bacterium that causes melioidosis in humans. While B. known to be endemic South East Asia (SEA), occurrence of disease other parts tropics points towards a potentially large global distribution. We investigated environmental factors influence presence (and absence) tropical watershed SEA. Our main objective was determine whether there link between organism hydrographic network and upstream soil land-use type. The determined using specific quantitative...
Melioidosis, a severe infection with the environmental bacterium Burkholderia pseudomallei, is being recognised increasingly frequently. What determines its uneven distribution within endemic areas poorly understood. We cultured soil from rice field in Laos for B. pseudomallei at different depths on 4 occasions over 13-month period. also measured physical and chemical parameters order to identify associated characteristics. Overall, 195 of 653 samples (29.7%) yielded pseudomallei. A higher...
In the basin of Mekong, over 70 million people rely on unimproved surface water for their domestic requirements. Surface is often contaminated with fecal matter and yet little information exists underlying mechanisms contamination in tropical conditions at large watershed scales. Our objectives were to (1) investigate seasonality using Escherichia coli as indicator bacteria (FIB), (2) establish links between stream its controlling factors (hydrology land use). We present results a sampling...