La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Effects of flood timing and livestock grazing on exotic annual plants in riverine floodplains
Auteurs :	Ian D. Lunt, Auteur ; Amy Jansen, Auteur ; Doug L. Binns, Auteur
Type de document :	Article
Dans :	Journal of Applied Ecology (49(5) OCT 2012)
Article en page(s) :	1131-1139
Langues:	Anglais
Résumé :	Riverine floodplains around the world are highly prone to invasions by exotic species. While many processes have contributed to floodplain invasions, two theories have received particular attention: (i) replacement of native perennials by exotic annuals following historical livestock grazing and (ii) terrestrialization because of fewer floods following river regulation. We assessed how exclusion of grazers and flooding in different seasons affected established populations of exotic annuals in an 8-year experiment. We hypothesized that effects of season of flooding would vary depending on timing in relation to annual plant life cycles and that outcomes may be affected by interactions between grazing and flooding. Flooding in any season reduced exotic annuals to

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