Conferences

M-TROPICS catchments introduced at the Cyberseminar Series of CUAHSI: “Introduction to critical zone observatories and watershed sites”

Muddu Sekhar (IISc Bengalore, CEFIRSE) and Laurie Boithias (GET) presented the key questions and findings from the two experimental catchments Berambadi (India) and Houay Pano (Lao PDR) at the Cyberseminar Series of CUAHSI: “Introduction to critical zone observatories and watershed sites” on Sept. 7. The introduction of the Berambadi catchment was focused on the effect […]

Events

Renewal of the Memorandum of Understanding with DALaM in Lao PDR

On 9th of August 2021, Dr Nivong Sipaseuth, Director General of the Department of Agricultural Land Management (DALaM) of the Laotian Ministry of Agriculture and Forestry and Dr Eric Deharo, Representative of IRD in Laos signed the renewal of an agreement of scientific and technical cooperation between the two institutions. The signature of this agreement confirms […]

Articles

Agricultural groundwater with high nitrates and dissolved salts given to pregnant mice alters brain development in the offspring

This new paper, at the interface between environment and health, shows that groundwater contaminated by agricultural inputs from the Indian site of Berambadi (M-TROPICS observatory), significantly impacts the brain development of mice when given to pregnant or lactating mice: fewer neurons, fewer astrocytes (white blood cells in the brain), and more dead cells in the […]

Articles

Decay Rate of Escherichia coli in a Mountainous Tropical Headwater Wetland

Fecal indicator bacteria like Escherichia coli (E. coli) are widely used to assess water contamination, but their behavior in tropical ecosystems is poorly documented. The main objectives of this study led by Paty Nakhle, PhD student at GET in collaboration with iEES Paris, were to: (i) evaluate decay rates (k) of the total, particle-attached and […]

Articles

The M-TROPICS CZO releases long-term meteorological, hydrological, sedimentary geochemical, and land use datasets in Cameroon, Lao PDR, and India

The CZO M-TROPICS (Multiscale TROPIcal CatchmentS) investigates the response of tropical catchments to global change based on long-term collection of meteorological, hydrological, sedimentary, geochemical, and land use data in partnership with academic and governmental institutions in various tropical countries. M-TROPICS includes in particular the experimental watersheds of Nyong in Cameroon (1994-), Houay Pano in Lao […]

Conferences

Response of tropical experimental catchments to global changes: the M-TROPICS CZO network

Jean Riotte (IRD) presented the key questions and findings from the three experimental catchments Nyong (Cameroon), Mule Hole (India), and Houay Pano (Laos), at the Cyberseminar Series of CUAHSI: “Research and Observatory Catchments: the Legacy and the Future” on March 10. This presentation is related to the submission of three data papers to the eponymous […]

Articles

Experimental and modelling evidence of splash effects on manure borne Escherichia coli washoff

In tropical montane South-East Asia, recent changes in land use have induced increased runoff, soil erosion and instream suspended sediment loads. Land use change is also contributing to increased microbial pathogen dissemination and contamination of stream waters. Escherichia coli (E. coli) is frequently used as an indicator of faecal contamination. Field rain simulations were conducted […]

Articles

Special Issue “Multiscale Impacts of Anthropogenic and Climate Changes on Tropical and Mediterranean Hydrology”

This Special Issue published in the Water journal and co-authored by Olivier Ribolzi (IRD-GET) shows the great interest of the scientific community in investigating how to characterize the environmental impact of anthropogenic and climatic changes on Tropical and Mediterranean hydrology, and also in determining which is the main source of changes depending on the regional […]

Articles

Effects of hydrological regime and land use on in-stream Escherichia coli concentration in the Mekong basin, Lao PDR

In the basin of Mekong, over 70 million people rely on unimproved surface water for their domestic requirements. Surface water is often contaminated with fecal matter and yet little information exists on the underlying mechanisms of fecal contamination in tropical conditions at large watershed scales. The objectives of this paper were to (1) investigate the […]