Fig. 2

Douglas-fir affected by winter reddening (Livradois-Forez in 2022). The Douglas-fir in the foreground is entirely red, while the one in the second foreground is in the process of turning red (red crown and green base)
Douglas-fir affected by winter reddening (Livradois-Forez in 2022). The Douglas-fir in the foreground is entirely red, while the one in the second foreground is in the process of turning red (red crown and green base)