@article{fdi:010053814,
  title = {{I}mplication of two in-stream processes in the fate of nutrients discharged by sewage system into a temporary river},
  author = {{D}avid, {A}. and {P}errin, {J}ean-{L}ouis and {R}osain, {D}. and {R}odier, {C}. and {P}icot, {B}. and {T}ournoud, {M}. {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he aim of this study was to better understand the fate of nutrients discharged by sewage treatment plants into an intermittent {M}editerranean river, during a low-flow period. {M}any pollutants stored in the riverbed during the low-flow period can be transferred to the downstream environments during flood events. {T}he study focused on two processes that affect the fate and the transport of nutrients, a physical process (retention in the riverbed sediments) and a biological process (denitrification). {A} spatial campaign was carried out during a low-flow period to characterize the nutrient contents of both water and sediments in the {VS}ne {R}iver. {T}he results showed high nutrient concentrations in the water column downstream of the treated wastewater disposal (up to 13,315 mu g {N}/{L} for ammonium and 2,901 mu g {P}/{L} for total phosphorus). {N}utrient concentrations decreased rapidly downstream of the disposal whereas nutrient contents in the sediments increased (up to 1,898 and 784 mu g/g for total phosphorus and {K}jeldahl nitrogen, respectively). {A}ccording to an in situ experiment using sediment boxes placed in the riverbed for 85 days, we estimated that the proportion of nutrients trapped in the sediments represents 25% (respectively 10%) of phosphorus (respectively nitrogen) loads lost from the water column. {I}n parallel, laboratory tests indicated that denitrification occurred in the {VS}ne {R}iver, and we estimated that denitrification likely coupled to nitrification processes during the 85 days of the experiment was significantly involved in the removal of nitrogen loads (up to 38%) from the water column and was greater than accumulation processes.},
  keywords = {{N}itrogen ; {P}hosphorus ; {W}astewater disposal ; {D}enitrification ; {S}ediment ; accumulation},
  booktitle = {},
  journal = {{E}nvironmental {M}onitoring and {A}ssessment},
  volume = {181},
  numero = {1-4},
  pages = {491--507},
  ISSN = {0167-6369},
  year = {2011},
  DOI = {10.1007/s10661-010-1844-2},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053814},
}