Effects of abundances of the native species on the differences between invasive and native species from a subset of the species pairs in leaf-carbon-to-nitrogen ratio (C:N), leaf-litter nitrogen loss rate (Loss-N), leaf-nitrogen concentration (Nm), and photosynthetic potassium-use efficiency (PKUE). “All” on the right of each panel indicates that all measured species pairs were included in the analysis. Arrows upwards from “All” indicate that species pairs containing rare and common natives were excluded gradually and randomly from the analyses; arrows downwards from “All” indicate that species pairs containing widespread dominant and common natives were excluded gradually. “D” indicates that only the widespread dominant natives were compared with their co-occurring invasives; “DC” indicates that both widespread dominant and common natives were compared with their co-occurring invasives; “R” indicates that only the rare natives were compared with their co-occurring invasives; “RC” indicates that both rare and common natives were compared with their co-occurring invasives; open circles indicate the differences when a random set of species pairs was excluded. The figures between brackets on the left of each panel indicate the numbers of species pairs included in the analyses.