| Titre : | Epiphytic diatoms as water quality indicators in Spanish shallow lakes (2004) |
| Auteurs : | S. Blanco, Auteur ; L. Ector, Auteur ; E. Becares, Auteur |
| Type de document : | Article |
| Dans : | Vie et Milieu - Life and Environment (54(2-3) septembre 2004) |
| Article en page(s) : | 71-79 |
| Langues: | Anglais |
| Résumé : | The Water Framework Directive (WFD) requires that the European Union countries determine the biological state of their waters with respect to sites of high quality. Despite bioindicators have been widely applied in running waters and deep lakes throughout all Europe, little is known about their applicability in shallow lakes. In this context, the objective of this work is to check the effectiveness of epiphytic diatoms as indicators of the trophic state in six shallow lakes of Leon Province (NW Spain). Epiphyton was sampled from helophyte stems in six shallow lakes covering different ecological conditions. A significant correlation was found between the total nitrogen concentration and the diatom indices SPI (Specific Polluosensitivity Index) and BDI (Biological Diatom Index), this correlation being lower with respect to the total phosphorus concentration. The classification of the lakes according to the trophic and saprobic levels based on diatoms corresponds to that obtained from the analysis of the limnological and chemical parameters of the studied systems. Despite the use of these indices has been traditionally limited to rivers and channels, our results show the effectiveness of epiphytic diatoms as biological indicators of the quality of water in Mediterranean shallow lakes and the applicability of common diatom indices for biomonitoring purposes in these aquatic ecosystems. |
| En ligne : | https://wwwphp.obs-banyuls.fr/Viemilieu/index.php/volume-54-2004/54-issues-2-3.html |



