Whole-Tree Water Use Efficiency Is Decreased by Ambient Ozone and Not Affected by O3-Induced Stomatal Sluggishness
Figure 5
Estimated steady-state carbon assimilation (A: Atree), water loss (B: Wloss) and instantaneous water use efficiency expressed as Atree/Wloss (C: WUE) at tree level (+SE) (WAT: water treated plants; EDU: EDU treated plants).
* and *** denote significance at the 5% and 0.1% level, respectively; n.s. indicates no significance. Different letters above the bars indicate significant differences among bars (Tukey HSD test, P<0.05, n = 5 trees).