La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The dispersal characteristics of the invasive plant Mimulus guttatus and the ecological significance of increased occurrence of high-flow events
Auteurs :	A.-M. Truscott, Auteur ; C. Soulsby, Auteur ; S. C. F. Palmer, Auteur ; L. Newell, Auteur ; P. E. Hulme, Auteur
Type de document :	Article
Dans :	Journal of Ecology (94(6) NOV 2006)
Article en page(s) :	1080-1091
Langues:	Anglais
Résumé :	1 Increased occurrence of high-flow events as a result of climate change may affect the dispersal success of an invasive plant species Mimulus guttatus and may result in range expansion. Predicted changes in climate point to a continuation of the recent observed trends in increased precipitation and high-flow events in Northern Europe. 2 The study focused on the dispersal characteristics of M. guttatus, and especially the roles of vegetative fragmentation with increasing water velocities, subsequent fragment survival, regeneration and colonization, as well as the buoyancy, survival and germination success of seeds. 3 M. guttatus was found to fragment readily under velocities typical of high flow conditions and even small fragments had high survival, regeneration and colonization capacity. 4 Large numbers of small (

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