Alien plants can be associated with a decrease in local and regional native richness even when at low abundance

• Published in: The Journal of ecology Vol. 107; no. 3; pp. 1343 - 1354
• Main Authors: Bernard-Verdier, Maud, Hulme, Philip E.
• Format: Journal Article
• Language: English
• Published: Oxford John Wiley & Sons Ltd 01.05.2019; Blackwell Publishing Ltd
• Subjects: Abundance; biological invasions; Environmental gradient; Environmental policy; exotic species; Flowers & plants; Grasslands; Herbivores; Homogenization; impact assessment; Indigenous plants; Indigenous species; introduced plants; Introduced species; Invasion ecology; issues and policy; Landscape; landscapes; Native organisms; passenger effects; Plant species; Population decline; risk; scale dependence; Species richness; weeds; β‐dissimilarity

1. The impacts of alien plants on native richness are usually assessed at small spatial scales and in locations where the alien is at high abundance. But this raises two questions: to what extent do impacts occur where alien species are at low abundance, and do local impacts translate to effects at...