Fig. 4From: Seed dispersal of wild radishes and its association with within-population spatial distributionThe effect of orientation (cf. Additional file 1: Fig. S3) on wind velocity causing removal (WVR) of fruits of wild radishes. Different letters above bars indicate significantly different results for each species separately (Tukey HSD, P < 0.05). Single-seed diaspores of R. raphanistrum were not included in this analysis because of their low WVR threshold (see Fig. 3)Back to article page