Figure 3.

Boxplot of seasonal variations in energy and water exchange in an area of cactus. R_n is the net radiation (a), LE is the latent heat flux (b), H is the sensible heat flux (c), G is the soil heat flux (d), ET is the evapotranspiration (e) and VPD is the vapour pressure deficit (f). The boxplots show the median; horizontal bars represent the 25th, 50th and 75th percentiles; whiskers (lower and upper) represent the 1.5× interquartile ranges; dots represent outliers. Significance was calculated using one-way analysis of variance (ANOVA) with Tukey’s honestly significant difference (HSD) post hoc test. Different letters above each box indicate significant differences (p < 0.05).