@article{fdi:010067796, title = {{E}ffect of land use and hydrological processes on {E}scherichia coli concentrations in streams of tropical, humid headwater catchments}, author = {{R}ochelle {N}ewall, {E}mma and {R}ibolzi, {O}livier and {V}iguier, {M}. and {T}hammahacksa, {C}. and {S}ilvera, {N}orbert and {L}atsachack, {K}. and {D}inh, {R}. {P}. and {N}aporn, {P}. and {S}y, {H}. {T}. and {S}oulileuth, {B}. and {H}maimum, {N}. and {S}isouvanh, {P}. and {R}obain, {H}enri and {J}aneau, {J}ean-{L}ouis and {V}alentin, {C}hristian and {B}oithias, {L}. and {P}ierret, {A}lain}, editor = {}, language = {{ENG}}, abstract = {{L}ack of access to clean water and adequate sanitation continues to be a major brake on development. {H}ere we present the results of a 12-month investigation into the dynamics of {E}scherichia coli, a commonly used indicator of faecal contamination in water supplies, in three small, rural catchments in {L}aos, {T}hailand and {V}ietnam. {W}e show that land use and hydrology are major controlling factors of {E}. coli concentrations in streamwater and that the relative importance of these two factors varies between the dry and wet seasons. {I}n all three catchments, the highest concentrations were observed during the wet season when storm events and overland flow were highest. {H}owever, smaller peaks of {E}. coli concentration were also observed during the dry season. {T}hese latter correspond to periods of intense farming activities and small, episodic rain events. {F}urthermore, vegetation type, through land use and soil surface crusting, combined with mammalian presence play an important role in determining {E}. coli loads in the streams. {F}inally, sampling during stormflow revealed the importance of having appropriate sampling protocols if information on maximum contamination levels is required as grab sampling at a fixed time step may miss important peaks in {E}. coli numbers.}, keywords = {{LAOS} ; {VIET} {NAM} ; {THAILANDE}}, booktitle = {}, journal = {{S}cientific {R}eports - {N}ature}, volume = {6}, numero = {}, pages = {art. 32974 [12 ]}, ISSN = {2045-2322}, year = {2016}, DOI = {10.1038/srep32974}, URL = {https://www.documentation.ird.fr/hor/fdi:010067796}, }