I think along the same lines. On the point of megafauna, isn’t it rather dependent on having enough large predators? E.g. in temperate forests, wolves have been

I think along the same lines. On the point of megafauna, isn’t it rather dependent on having enough large predators? E.g. in temperate forests, wolves have been shown to be very effective at repairing forest health by keeping deer at bay, leading to positive changes throughout the ecosystem.