Plant-soil feedbacks (PSFs) are considered major drivers of plant species coexistence and exotic invasions. This study combined monoculture and community experiments to assess whether PSFs in monocultures predict PSFs in communities and to investigate the role of PSFs in invasive plant success. Results showed that monoculture PSFs poorly predicted community PSFs; invasive species' competitive strength didn't consistently depend on PSF; and dominant species experienced stronger negative PSFs than non-dominant species in communities. Negative PSFs, particularly affecting dominant species, appear to be a major driver of plant species coexistence.

Elias P. Goossens, Vanessa Minden, Flor Van Poucke, Harry Olde Venterink