Fig. 3

The fitness of E. ovata relative to E. globulus (a) and the standardised precipitation-evapotranspiration index (SPEI) curve (b) over the study period. a The fitness of all cross-types of E. ovata-outcrossed (OVxOV), open-pollinated (OVop), and selfed (OVself), relative to that of the respective E. globulus cross-types (GLxGL, GLop, and GLself) at each age. Fitness values below one indicate E. ovata survived less than E. globulus. b The solid black line represents the trend in SPEI based on a 5-year moving average window. SPEI values below zero indicate water deficit and above zero indicate water surplus. Red arrows indicate the number of days per year above 30 °C (short arrow represent 1 day, and long arrow represent 2 days), which were calculated from the daily climate data surface obtained from the Australian Bureau of Meteorology