Number of species in the complete all-species pine pest list (649 species total) per taxonomic group that were intercepted and/or established, shown on a log-log scale. The black line represents where the taxa would fall on average if the number of established species was proportional to the number of intercepted species. The dashed lines show the prediction interval within which the taxa groups are expected to fall if establishments occurred at proportionally similar rates to interceptions, based on a Poisson model, alpha = 0.05, with Bonferroni correction accounting for 11 comparisons between taxa.