only marginally significantp < 0.0001
Niche expansion was found to be higher in species with high dispersal distance, with high mean SLA and seed mass (only marginally significant), and high seed mass variability, in annual species, and those introduced from temperate and tropical biomes ( φ = 5.5; p < 0.0001, R 2 = 0.51, d.f. = 10; Figure 2a,c for specific examples).