FN Archimer Export Format
PT J
TI The role of models in assessing the impact of sewage overflows on feacal water contamination
BT 
AF RIOU, Philippe
   LE SAUX, Jean-Claude
   DUMAS, Franck
   LE GUYADER, Soizick
   LE GOFF, R.
   MAHEUX, Frank
   LAMORT, Laure
   POMMEPUY, Monique
AS 1:1;2:1;3:1;4:1;5:1;6:1;7:1;8:1;
FF 1:PDG-ODE-LER-LERN;2:PDG-RBE-EMP-MIC;3:PDG-ODE-DYNECO-PHYSED;4:PDG-RBE-EMP-MIC;5:;6:PDG-ODE-LER-LERN;7:PDG-ODE-LER-LERN;8:PDG-RBE-EMP-MIC;
C1 IFREMER, france
C2 IFREMER, FRANCE
SI PORT-EN-BESSIN
   BREST
   NANTES
SE PDG-ODE-LER-LERN
   PDG-RBE-EMP-MIC
   PDG-ODE-DYNECO-PHYSED
TC 0
UR https://archimer.ifremer.fr/doc/00066/17739/15261.pdf
LA English
DT Article
DE ;Modeling;seawater fecal contamination;E. coli;virus;shellfish;climate change
AB Climate change contributes to local weather modifications such as storm events and heavy rainfall, and in particular, changes in the frequency and intensity of extreme storm and rainfall events. Observations have indicated that rainfall-runoff processes, like sewage overflow may induce fecal contamination in coastal water. Pathogens present in runoff water could therefore contaminate shellfish and be responsible for food-borne disease outbreaks. Mathematical models for this were used to predict the effect of climate modifications on shellfish quality. Using a hydrodynamic model, simulations of water quality conditions under a variety of storm event scenarios were run and are presented here for a harvesting area in France. Major storm events occurring in the watersheds were selected to estimate the critical fecal loads which could be due to overflow. Escherichia coli fluxes were calculated for these scenarios. Norovirus fluxes were estimated from data in the literature. The hydrodynamic model was then used to calculate the impact of hydraulic load and wastewater inputs on seawater quality. Our results indicated that major rainfall events generated relatively high runoff volumes and high pathogen loadings to the sea which led to shellfish contamination. After an extreme contamination event, the time needed to recover good water quality as calculated using the model, depended on the sectors in question.
PY 2008
SO Journal of Shellfish Research
PU National Shellfisheries Association
ID 17739
ER

EF