Figure 1. Relationship between the proportion of exotic plants planted in the community and A. Relative abundance of sequences identified as plant pathogens in plant roots (pathogens sequences/total sequences). B. Normalized degree of plants (measures the generality of interactions by plants with pathogens), C. Normalized degree of pathogens (measures the generality of interactions by pathogens with plants) and D. Closeness centrality of plants (measure of the frequency in which plants share generalist pathogens with other plants). Closed circles represent native plants and open circles represent exotic plants in A, B & D. Response variables were modelled on a log scale. All interactions were tested, but dropped from the models based on AIC.