2.3 Explanatory variables and statistical analysis
We prepared a data set of environmental variables that can be considered
as proxies of propagule pressure, abiotic environment, and biotic
characteristics, based on the PAB framework (Catford et al., 2009; Table
1). These proxies were chosen based on the results of previous study onSolidago (Szymura et al., 2016) and the most influential drivers
of neophytes in the region (Szymura et al., 2018).
TABLE 1 Explanatory variables selected for modelling invasiveSolidago distribution. Variables indicated by italic were
excluded from further analysis due to collinearity.