Impacts de l'eutrophisation de la végétation des zones humides de fonds de vallées sur la biodiversité des Rhopalocères (Lepidoptera)
Auteurs : Es (Jérémie Van), Paillisson (Jean-Marc) et Burel (Françoise)
Année de publication : 1999
Publication : Vie et Milieu / Life and Environment
Volume :
49
Fascicule : 2-3
Pagination : 107-116
Résumé :
The aim of this study is to analyse the consequences of vegetation eutrophication in floodplain wetlands on butterfly community. Eutrophication leads to a loss of butterfly biodiversity. Changes in the species community composition are noted at the same time as biodiversity decreases. Nymphalidae species including Vaness species whose hostplant is nettle (Urtica genus) characterize communities in floodplain wetlands with eutrophic vegetation. These communities tend to be similar with those of the agricultural landscape in the catchment. Finally in terms of exchanges with the catchment, individual movements in oligotrophic systems would be mainly lengthwise to these zones (few exchanges with the catchment) while in eutrophic systems exchanges are more numerous