Figure 1. Productivity responses to global change scenarios are contingent upon species evolutionary history and novel biotic interactions.

Overall, monocultures (pairs of conspecific individuals) of species in the subgenus Symphyomyrtus (top right panel) in elevated CO₂ conditions exhibit the strongest responses to N. On average, these monocultures produce 126% more biomass than all other species pairs in high N and elevated CO₂ treatments (1.301±0.205 g and 0.576±0.061 g, respectively). Above- and belowground biomass follow similar patterns. Error bars represent ±1 SEM.