Boxplots of five functional diversity indices, based on plant community data collected at three sites for each of two invaders, Gunnera tinctoria and Impatiens glandulifera. At each site, data were collected from five replicate plots for each invaded invaded (violet) and uninvaded (green) condition. Mean values were plotted as black dots. SB P = persistent seed bank (from samples collected in spring), SB T = transient seed bank (from samples collected in autumn), and VEG (from vegetation surveys conducted over one growing season). The results of post hoc Tukey’s HSD tests are displayed on top of the bars: capital letters indicate significant differences between invaded and uninvaded groups, separately for persistent seed banks, transient seed banks, and vegetation. Small letters indicate significant differences between uninvaded groups (persistent seed banks, transient seed banks, and vegetation), while small letters in italics indicate significant differences between invaded groups (persistent seed banks, transient seed banks, and vegetation).