Extended Data Fig. 4: Effects of climatic variables on rates of change in W with ca (dW/dca).
From: Diminishing CO2-driven gains in water-use efficiency of global forests

Linear regressions of dW/dca and climatic variables: mean annual precipitation, MAP; potential evapotranspiration, PET; mean annual temperature, MAT; vapour pressure; and radiation. (a–e) All data as shown in Extended Data Fig. 1. (f–o) Angiosperms (n = 147) and gymnosperms (n = 275) considered separately.