This graph illustrates the distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012. We learn that about one-fifth of the sites sampled were in poor condition or even bad during this period. period of time.
Distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012 *
* The source adds the following information: "Note: the value of the IPR is calculated on 779 sites from sampling fisheries conducted between August and October in 2011 and 2012."
The source also adds this information: "Fish are sensitive to the different elements that alter the ecological quality of a watercourse: presence of obstacles such as dams, flow disturbances, habitat degradation and water pollution. . The river fish index (IPR) reflects this ecological quality of rivers. "
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Ministère de l'environnement, de l'énergie et de la mer. (February 18, 2016). Distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012 * [Graph]. In Statista. Retrieved December 21, 2024, from https://www.statista.com/statistics/771132/quality-index-fish-river-ipr-course-d-water-la-france/
Ministère de l'environnement, de l'énergie et de la mer. "Distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012 *." Chart. February 18, 2016. Statista. Accessed December 21, 2024. https://www.statista.com/statistics/771132/quality-index-fish-river-ipr-course-d-water-la-france/
Ministère de l'environnement, de l'énergie et de la mer. (2016). Distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012 *. Statista. Statista Inc.. Accessed: December 21, 2024. https://www.statista.com/statistics/771132/quality-index-fish-river-ipr-course-d-water-la-france/
Ministère de l'environnement, de l'énergie et de la mer. "Distribution of Rivers According to The Quality Class of The River Fish Index (Rpi) in France between 2011 and 2012 *." Statista, Statista Inc., 18 Feb 2016, https://www.statista.com/statistics/771132/quality-index-fish-river-ipr-course-d-water-la-france/
Ministère de l'environnement, de l'énergie et de la mer, Distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012 * Statista, https://www.statista.com/statistics/771132/quality-index-fish-river-ipr-course-d-water-la-france/ (last visited December 21, 2024)
Distribution of rivers according to the quality class of the river fish index (RPI) in France between 2011 and 2012 * [Graph], Ministère de l'environnement, de l'énergie et de la mer, February 18, 2016. [Online]. Available: https://www.statista.com/statistics/771132/quality-index-fish-river-ipr-course-d-water-la-france/
