FIGURE LEGENDS
FIGURE 1 The study region location (green) on a background of land relief (a), and distribution of communication network and settlements on the background of altitude within the study region (b).
FIGURE 2. Distribution of invasive Solidago species (orange color) in studied region. The light gray color show distribution of squares with confirmed Solidago absence. Squares excluded from analysis, are not shown (left blank).
FIGURE 3. The values of area under curve (AUC) for simplified models of S. canadensis and S. gigantea distributions, with spatially blocked, 5-fold cross-validation.
FIGURE 4. Variables importance for each variable involved in the simplified models. The whiskers denote the standard deviation calculated basing on spatially blocked cross-validation.
FIGURE 5 The modeled responses of Solidago species for particular environmental variables. The shape of the response was modelled using the evaluation strips method (Elith et al., 2005), with spatially blocked, 5-fold cross-validation. The graphs are sorted according decreasing value of variables’ importance, upper panel forS. canadensis , lower – for S. gigantea .
FIGURE 6 The projected probability of presence of the invasiveSolidago species. The optimal cutoff value was 0.205 for S. canadensis and 0.539 for S. gigantea .