Recent growth changes in Western European forests are driven by climate warming and structured across tree species climatic habitats

Table 3 Environmental predictors of stand BAI selected by PLS regression for the eight species under study (Eq. 3)

Numbers between 1 and 12 in the predictor names refer to months in the year (see Table 2 for predictor abbreviations). These predictors are averages over the 5-year period of a growth increment, shifted by 1 year backward in time for months 10 to 12 (average effect of autumns before annual growth). Only the sign of the jackknife parameters (light grey: positive, dark grey: negative, Appendix 6 ) and rank of significance (numbered by decreasing significance) of the significant variables in the PLS regression are represented. Variables are grouped when these were significant over successive months

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