@article{fdi:010058948,
  title = {{S}patial and temporal trends in water quality in a {M}editerranean temporary river impacted by sewage effluents},
  author = {{D}avid, {A}. and {T}ournoud, {M}. {G}. and {P}errin, {J}ean-{L}ouis and {R}osain, {D}. and {R}odier, {C}. and {S}alles, {C}. and {B}ancon-{M}ontigny, {C}. and {P}icot, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his paper analyzes how changes in hydrological conditions can affect the water quality of a temporary river that receives direct inputs of sewage effluents. {D}ata from 12 spatial surveys of the {VS}ne river were examined. {P}hysico-chemical parameters, major ion, and nutrient concentrations were measured. {A}nalyses of variance ({ANOVA}) and multivariate analyses were performed. {ANOVA} revealed significant spatial differences for conductivity and major ion but no significant spatial differences for nutrient concentrations even if higher average concentrations were observed at stations located downstream from sewage effluent discharge points. {S}ignificant temporal differences were observed among all the parameters. {K}arstic springs had a marked dilution effect on the direct disposal of sewage effluents. {D}uring high-flow periods, nutrient concentrations were high to moderate whereas nutrient concentrations ranged from moderate to bad at stations located downstream from the direct inputs of sewage effluents during low-flow periods. {P}rincipal component analysis showed that water quality parameters that explained the water quality of the {VS}ne river were highly dependent on hydrological conditions. {C}luster analysis showed that when the karstic springs were flowing, water quality was homogeneous all along the river, whereas when karstic springs were dry, water quality at the monitoring stations was more fragmented. {T}hese results underline the importance of considering hydrological conditions when monitoring the water quality of temporary rivers. {I}n view of the pollution observed in the {VS}ne river, "good water chemical status" can probably only be achieved by improving the management of sewage effluents during low-flow periods.},
  keywords = {{W}ater quality ; {N}utrient ; {S}ewage effluent ; {T}emporary river ; {T}emporal variations ; {M}ultivariate statistical analysis ; {ZONE} {MEDITERRANEENNE}},
  booktitle = {},
  journal = {{E}nvironmental {M}onitoring and {A}ssessment},
  volume = {185},
  numero = {3},
  pages = {2517--2534},
  ISSN = {0167-6369},
  year = {2013},
  DOI = {10.1007/s10661-012-2728-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010058948},
}