Figure 5.
Climatic sensitivity (CS) traits: basal area increment (BAI) and monthly drought code (DC). (a) Bootstrapped correlation coefficients were computed between Pinus strobus BAI standardized residuals of BAI scores and the monthly DC at the Valcartier common garden experiment (Quebec, Canada) over the 1993–2014 period. (b) Test for clinal variations in correlation coefficients along the MAT p gradient: P‐value and slope sign of a regression against MAT p. Significance: •, P < 0.1; ***, P < 0.001.