Fig. 1. Univariate exploration of traits among Acropora digitifera colonies showing marine heatwave emulation, 3D colony growth, and fecundity.
a The experimental marine heatwave exposure conducted on 6 fragments per colony lasted 5 weeks reaching approximately +3.5 °C above the local climatological baseline (MMMadj). Colour legend is shared with panel b with heated tanks and procedural control tanks (T1 and T4). b This translated to accumulated degree heating weeks (DHW) of ~10 °C-weeks. c Bleaching and mortality responses (BSI) of each colony (individual lines) are shown throughout the experiment with a horizontal jitter to separate overlapping lines. d The BSI-DHW relationship (where BSIs are corrected for DHW drift among tanks) was unaffected by symbiont ITS2 type, showing number of colonies with each symbiont ITS2 type in brackets. e Interannual comparisons of coral colony structure-from-motion 3D models revealed marked variability in growth rates, with examples from some common growth types shown here, and all other colony models shown in Fig. S4. f Fecundity measurements from 2 fragments per colony match closely to previous estimates of egg diameter for Acropora spp. (red dashed line)39.