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\begin{document}

\title{Ardi\selectlanguage{ngerman}ères-Morcille: a research catchment dedicated to the study of the
transfer and impact of diffuse agricultural pollution in rivers\selectlanguage{english}}



\author[1]{Véronique Gouy}%
\author[2]{Lucie Liger}%
\author[1]{Chloé Bonnineau}%
\author[1]{Nadia Carluer}%
\author[1]{Arnaud Chaumot}%
\author[1]{Marina Coquery}%
\author[1]{Aymeric Dabrin}%
\author[1]{Christelle Margoum}%
\author[1]{Stéphane Pesce}%
\affil[1]{INRAE}%
\affil[2]{Irstea Centre de Lyon-Villeurbanne}%


\vspace{-1em}



  
  \date{May 17, 2024}


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\selectlanguage{english}
\begin{abstract}
The Ardi\selectlanguage{ngerman}ères catchment, (150 km²), in Beaujolais (France), belongs to
the first European catchments where surface water contamination by
pesticides has been highlighted in the late 1980s. Research on this site
mainly aims at better understanding organic pesticides and trace
elements hydrological pathways to watercourses, and at evaluating
subsequent contamination and impact on aquatic ecosystems. Landscape as
well as instream processes are studied in order to highlight catchment
vulnerability to contaminants and possible mitigation actions. A
consistent hydrological and chemical monitoring of the Ardières River
and one of its tributaries, the Morcille River, has been taking place
since 2002. It was supplemented by biological measurements on aquatic
micro-organisms and macroinvertebrates, more particularly after 2005.
The results show the importance of long-term study to account for the
kinetics of contaminant transfer in hydro-biogeochemical systems.
Physico-chemical, ecological and ecotoxicological measurements all
showed spatial and temporal variability in water quality and a gradient
of impact on community structures and ecological functions as a function
of the pressure of human activity. Results allowed to develop indicators
of toxic impacts and resilience of communities and provided avenues for
action to improve water quality.%
\end{abstract}\selectlanguage{ngerman}%



\sloppy


\textbf{Short informative:}

This article is a DataNote which describes main results of the research
carried out for more than 30 years in the Ardi\selectlanguage{ngerman}ères-Morcille watershed
dedicated to the study of the transfer and impact of diffuse
agricultural pollution in rivers.

\textbf{Running title:}

Ardières-Morcille Catchment DataNote

\textbf{Authors~:}

Véronique Gouy\textsuperscript{1}*, Lucie Liger², Chloé
Bonnineau\textsuperscript{1}, Nadia Carluer\textsuperscript{1}, Arnaud
Chaumot\textsuperscript{1}, Marina Coquery\textsuperscript{1}, Aymeric
Dabrin\textsuperscript{1}, Christelle Margoum\textsuperscript{1},
Stéphane Pesce\textsuperscript{1}

* corresponding author, ORCID
ID:\emph{https://orcid.org/0000-0001-7040-7832}

\textsuperscript{1}INRAE-Riverly, 5 Rue de la Doua. CS 20244. 69625
VILLEURBANNE Cedex, France

\textsuperscript{2}Irstea, 5 Rue de la Doua. CS 70077. 69626
VILLEURBANNE Cedex, France

\textbf{Acknowledgments:}

The authors express their gratitude to all the scientists who have
contributed to the research on the Ardières-Morcille basin, whatever
their place in the process, as well as to the farmers and water managers
who have, for so long, facilitated the deployment of experimental
devices on their territory. Cemagref, Irstea and INRAE \selectlanguage{english}\selectlanguage{english}are also
thanked for having placed their trust in researchers and supported the
observatory over time. Finally, this research would not have been
possible either without the scientific or financial support of the
Office Francais de la Biodiversite, Zone Atelier du Bassin du Rhone, the
Rhone Mediterranee \& Corse water agency, the AUvergne Rhone Alpes
Region, the National Research Agency, the French Ministries in charge of
agriculture and environment, and the opportunities they have offered
from successive national and regional programs.\selectlanguage{english}
\begin{figure}[H]
\begin{center}
\includegraphics[width=0.70\columnwidth]{figures/SAAMFigure-I/SAAMFigure-I}

\end{center}
\end{figure}\selectlanguage{english}
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\includegraphics[width=0.70\columnwidth]{figures/SAAMFigureII/SAAMFigureII}

\end{center}
\end{figure}\selectlanguage{english}
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