General increase in assemblage dissimilarity by the inclusion of exotic species into indigenous assemblages.

β indicates the averaged values of the species replacement index calculated per each considered habitat category and for the whole epigean arthropod assemblages (All), and indigenous species alone. Averaged Wilcoxon Z values for the 10 rarefied matrices and numbers of cases (Nc) in which the similarity values of the whole assemblages and the indigenous species alone are statistically different (P S3 File, for the Z values of the ten rarefied matrices).General increase in assemblage dissimilarity by the inclusion of exotic species into indigenous assemblages.