Pre-dawn and midday leaf water potential measured in Vila Vicosa between 2018-01-18 and 2020-03-17. Measured witha Scholander Pressure Chamber Data used for 1) Graph and 2) Statistics including four experimental treatments, two species and two seasons: Treatments 1) AQ: Control 2) AQC: Invasion 3) DQ: Rain Exclusion 4) DQC: Invasion + Rain Exclusion Species 1) Q: Quercus suber 2) C: Cistus ladanifer Seasons 1) w: wet 2) s: dry Statistics: Plot: Plot within one of the three Blocks ID: Tree or shrub identity n/a values: Midday leaf water potentials were not always measured, when pre-dawn leaf water potentials were measured due to cloudy conditions