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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Water quality evaluation in Catalonian Mediterranean rivers using epilithic diatoms as bioindicators (2004)
Auteurs :	J. Goma, Auteur ; R. Ortiz, Auteur ; J. Cambra, Auteur ; L. Ector, Auteur
Type de document :	Article
Dans :	Vie et Milieu - Life and Environment (54(2-3) septembre 2004)
Article en page(s) :	81-90
Langues:	Anglais
Résumé :	The main goal is to evaluate water quality in the alkaline Mediterranean rivers from the central and the south basins of Catalonia, using benthic diatoms as indicators. We sampled 72 sites spread throughout the seven studied basins : Ebre/Segre, Llobregat, Besos, Francoli, Gaia, Foix and Riudecanyes. Most of them are from the Water Quality Surveillance Network of the Catalan Government Water Agency (ACA), with 17 new stations distributed in unpolluted watercourses from different ecoregions. The European protocol has been followed to take the epilithic samples, to treat them and to quantify species abundance. The study has also followed a full complete floristic list of the benthic diatom flora. 23 new taxa for the Iberian flora are listed. Application and optimal run of general water pollution indices IPS, CEE, IBD, EPI-D and water trophic level indices TDI and van Dam have been tested in Mediterranean basins. The comparisons between indices and chemical variables have shown IPS to be the best diatom index to be applied in Mediterranean rivers. Finally the water quality information has been synthetised in a biological water quality map.
En ligne :	https://wwwphp.obs-banyuls.fr/Viemilieu/index.php/volume-54-2004/54-issues-2-3.html

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