Regeneration density and dispersal of alien conifers A boxplots and density plots of dispersal distances for species of which at least 10 individuals were recorded. Species are ordered in descending order using WRD. The total number of individuals per species (n) is indicated on the right. The mean (point) and median (vertical bar) are indicated. The 95th percentile was also represented with a green triangle B comparison of species based on mean WRD ± standard error (indiv.ha-1.haplanted-1) and 95th percentile of dispersal distances (m).