Figure legends
Figure 1. Location of study areas (Cerrado: typical cerrado; Cerradão; Forest: semi-deciduous seasonal forest). Database: MMA (Ministry of the Environment; site: mapas.mma.gov.br).
Figure 2. Comparisons of Ψl between different seasons (rainy and dry) and across different periods of the day in the typical cerrado (orange bars), cerradão (light green), and forest (dark green). Asterisks indicates significant differences (p<0.05).
Figure 3. Comparison between cerrado (orange bars), cerradão (light green), and forest (dark green) for the variation in Ψl predawn (ΔΨpd, MPa) and the variation in Ψl at midday (ΔΨmd, MPa). Asterisks indicates significant differences (p <0.05).
Figure 4 . Leaf water potential regulation of 21 species divided into two groups: forest (comprising cerradão and semi-deciduous seasonal forest) and savanna (typical cerrado). The slope angle ( ± CI - confidence interval) estimates the value that allows classifying: square - the species as strict isohydric (SI), triangle - partially isohydric (PI), and circle - extreme anisohydric (EA). The line shows the distance of confidence interval that to differ the types of leaf water potential regulation. No species was identified as strict anisohydric. Complete list of species names is shown in Table 1.
Figure 5. Linear regression between the leaf water potential (Ψl, MPa) and the Vapor Pressure Deficit (VPD, KPa) of the typical cerrado (orange), cerradão (light green), and forest (dark green), in the Cerrado-Amazonia Transition, Brazil. Circles represent individuals sampled in each vegetation type. Intercepts between regression lines differed in both rainy (p <0.001), and dry seasons (p <0.001) (Standardised Major Axis- SMA).