@article{fdi:010066183, title = {{U}se of fallout radionuclides ({B}e-7, {P}b-210) to estimate resuspension of {E}scherichia coli from streambed sediments during floods in a tropical montane catchment}, author = {{R}ibolzi, {O}livier and {E}vrard, {O}. and {H}uon, {S}. and {R}ochelle {N}ewall, {E}mma and {H}enry-des-{T}ureaux, {T}hierry and {S}ilvera, {N}orbert and {T}hammahacksac, {C}. and {S}engtaheuanghoung, {O}.}, editor = {}, language = {{ENG}}, abstract = {{C}onsumption of water polluted by faecal contaminants is responsible for 2 million deaths annually, most of which occur in developing countries without adequate sanitation. {I}n tropical aquatic systems, streambeds can be reservoirs of persistent pathogenic bacteria and high rainfall can lead to contaminated soils entering streams and to the resuspension of sediment-bound microbes in the streambed. {H}ere, we present a novel method using fallout radionuclides ({B}e-7 and {P}b-210(xs)) to estimate the proportions of {E}scherichia coli, an indicator of faecal contamination, associated with recently eroded soil particles and with the resuspension of streambed sediments. {W}e show that using these radionuclides and hydrograph separations we are able to characterize the proportion of particles originating from highly contaminated soils and that from the resuspension of particle-attached bacteria within the streambed. {W}e also found that although overland flow represented just over one tenth of the total flood volume, it was responsible for more than two thirds of the downstream transfer of {E}. coli. {W}e propose that data obtained using this method can be used to understand the dynamics of faecal indicator bacteria ({FIB}) in streams thereby providing information for adapted management plans that reduce the health risks to local populations.}, keywords = {{FIB} ; {S}outh {E}ast {A}sia ; {H}ydrological modelling ; {E}rosion ; {L}and use ; {O}verland flow ; {B}eryllium-7 ; {L}ead-210 ; {LAOS}}, booktitle = {}, journal = {{E}nvironmental {S}cience and {P}ollution {R}esearch}, volume = {23}, numero = {4}, pages = {3427--3435}, ISSN = {0944-1344}, year = {2016}, DOI = {10.1007/s11356-015-5595-z}, URL = {https://www.documentation.ird.fr/hor/fdi:010066183}, }