| HAL : hal-00523919, version 1 |
| DOI : 10.1016/j.aquatox.2009.05.012 |
| CEMOA : http://cemadoc.irstea.fr/cemoa/PUB00026668 |
| Fiche détaillée | Récupérer au format |
|
|
| Aquatic Toxicology 94, 1 (2009) p. 28 - p. 39 |
|
|
|
|
| Linking diatom community structure to pesticide input as evaluated through a spatial contamination potential (Phytopixal): a case study in the Neste river system (South-West France) |
|
|
| S. Morin 1M. Bottin 1 |
|
|
| (2009) |
|
|
| A large-scale field survey was undertaken in the Neste system (South-West France) to investigate the impact of pesticide inputs on the structure of riverine benthic diatom communities. A total of 18 sites in the Coteaux de Gascogne study areawere sampled during periods of pesticide use over two consecutive years (20052006). The typology of the diatoms collected was determined using artificial neural networks generating patterns in diatom community composition that indicated the species influenced by pesticide inputs, combined with organic pollution. Small, pioneer species of the Achnanthales group were more frequent in the pesticide-contaminated assemblages, whereas slower colonizers were more often found in the sites where disturbancewas lower. The Phytopixal approach, a means to assess the spatial contamination potential, provided valuable information about pesticide exposure and was a successful means of discriminating diatom assemblages, suggesting that a global estimate of pesticide pollution risk, although rough, would be more appropriate and more representative than sporadic pesticide analyses. |
|
|
|
|
|
|
|
|
|
|
| 1 : | Réseaux épuration et qualité des eaux (UR REBX) |
| CEMAGREF | |
| 2 : | Aménités et dynamiques des espaces ruraux (UR ADBX) |
| CEMAGREF | |
| 3 : | Laboratoire Ecologie Fonctionnelle et Environnement (EcoLab) |
| PRES Université de Toulouse – Institut National Polytechnique de Toulouse - INPT – Université Paul Sabatier [UPS] - Toulouse III – Observatoire Midi-Pyrénées – CNRS : UMR5245 | |
|
|
|
|
|
|
|
|
| Domaine | : | Sciences du Vivant/Toxicologie/Ecotoxicologie Sciences du Vivant/Biologie végétale/Botanique Sciences du Vivant/Ecologie, Environnement/Interactions entre organismes Physique/Physique/Instrumentations et Détecteurs Sciences de l'environnement |
|
|
| DIATOMEE – PESTICIDE – CONTAMINATION CHIMIQUE – PHYTOPIXAL – SELF ORGANIZING MAPS |
|
|
| Liste des fichiers attachés à ce document : | |||||
|
|
|
| hal-00523919, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00523919 | |
| oai:hal.archives-ouvertes.fr:hal-00523919 | |
| Contributeur : Import Ws Irstea | |
| Déposé pour le compte de : | |
| Soumis le : Mercredi 6 Octobre 2010, 15:36:01 | |
| Dernière modification le : Jeudi 7 Octobre 2010, 08:41:52 | |