@article{fdi:010089726,
  title = {{V}illage settlements in mountainous tropical areas, hotspots of fecal contamination as evidenced by {E}scherichia coli and stanol concentrations in stormwater pulses},
  author = {{B}oithias, {L}. and {J}ard{\'e}, {E}. and {L}atsachack, {K}. and {T}hammahacksa, {C}hanthanousone and {S}ilvera, {N}orbert and {S}oulileuth, {B}. and {X}ayyalart, {M}. and {V}iguier, {M}arion and {P}ierret, {A}lain and {R}ochelle-{N}ewall, {E}mma and {R}ibolzi, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ecal bacteria in surface water may indicate threats to human health. {O}ur hypothesis is that village settlements in tropical rural areas are major hotspots of fecal contamination because of the number of domestic animals usually roaming in the alleys and the lack of fecal matter treatment before entering the river network. {B}y jointly monitoring the dynamics of {E}scherichia coli and of seven stanol compounds during four flood events ({J}uly-{A}ugust 2016) at the outlet of a ditch draining sewage and surface runoff out of a village of {N}orthern {L}ao {PDR}, our objectives were (1) to assess the range of {E}. coli concentration in the surface runoff washing off from a village settlement and (2) to identify the major contributory sources of fecal contamination using stanol compounds during flood events. {E}. coli pulses ranged from 4.7 x 10(4) to 3.2 x 10(6) most probable number ({MPN}) 100 m{L}(-1), with particle-attached {E}. coli ranging from 83 to 100%. {M}ajor contributory feces sources were chickens and humans (about 66 and 29%, respectively), with the highest percentage switching from the human pole to the chicken pole during flood events. {C}oncentrations indicate a severe fecal contamination of surface water during flood events and suggest that villages may be considered as major hotspots of fecal contamination pulses into the river network and thus as point sources in hydrological models.},
  keywords = {fecal biomarkers ; fecalindicator bacteria ; microbial source tracking ; {EMMA} ; freshwater ; {E}. coli partition ; hot moments ; tropical rural areas ; {LAOS} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{E}nvironmental {S}cience and {T}echnology},
  volume = {58},
  numero = {},
  pages = {6335−6348},
  ISSN = {0013-936{X}},
  year = {2024},
  DOI = {10.1021/acs.est.3c09090},
  URL = {https://www.documentation.ird.fr/hor/fdi:010089726},
}