Allelopathy of a native grassland community as a potential mechanism of resistance against invasion by introduced plants

摘要: Successful plant invasions depend, at least partly, on interactions between introduced plants and native communities. While allelopathic effects of invaders resident species have received much attention, the reverse, i.e. residents plants, been largely neglected. Therefore, we tested whether allelopathy communities decreases their invasibility to species. In addition, among invasive ones are more tolerant than non-invasive ones. To test these hypotheses, grew nine pairs related (congeneric or confamilial) (i.e. 18 species) in presence absence a grassland community, which consisted three common forbs grasses, with without activated carbon soil. Activated reduced survival percentage growth community. However, its net effect was neutral even slightly positive This might suggest that community imposed were neutralized by carbon. The however, did not differ tolerance such Thus, although increase resistance against there no evidence contributes degree invasiveness plants.