Table 2 Optimal climate windows (window width with the maximum correlation), window lengths in days, Pearson correlation coefficients, and associated probability levels (P) calculated between the ring-width indices (RWI) and climate variables
Species | Variable | Climate window | Days | Correlation | P value |
|---|---|---|---|---|---|
F. sylvatica | Temperature | September 29–October 28 | 30 | − 0.338 | 0.019 |
F. sylvatica | Precipitation | April 04–May 05 | 32 | 0.327 | 0.023 |
Q. petraea | Temperature | June 11–July 17 | 37 | − 0.365 | 0.011 |
Q. petraea | Precipitation | April 04–September 16 | 166 | 0.453 | 0.001 |
Q. pyrenaica | Temperature | March 17–April 15 | 30 | − 0.355 | 0.013 |
Q. pyrenaica | Precipitation | May 13–September 11 | 122 | 0.408 | 0.004 |