Significant (p < 0.05) bootstrapped Pearson’s correlation coefficients (R) for climate-growth-correlations between climate variables and growth index chronologies of the different species for the vegetation period (VP, Apr.-Sep) and single months.

Months of the previous year are written in lower case letters and months of the current year in capital letters. Background colours indicate heat-related (red), water supply-related (blue) and cold-related (yellow) climate variables.