FIGURE 3.

Distribution of uncertainty if 15 major drivers of biological invasions will exhibit major impacts on the environment by 2050 under a best‐ and worst‐case scenario, based on answers provided by 36 experts. The uncertainty categories follow a five‐point Likert scale. The estimates shown include all responses across 14 contexts regarding taxonomic groups, zonobiomes, realms and socio‐economic status (see Supplementary Material 1, Table 1). The stacked bars represent the uncertainty categories, with the bars and percentage value for the medium certain category centred at 0% on the x‐axis. Bars and percentage values on the left refer to the uncertainty categories extremely and moderately uncertain, and bars and percentage values on the right refer to the answers in the categories highly and extremely certain. Categories sum up to 100%