If there was a huge natural disaster in the tundra, in what order would new organisms return?

Question

If there was a huge natural disaster in the tundra, in what order would new organisms return?

Answer 1

Bacteria, fungi, lichens, mosses, small plants, grasses, insects, other small flowering plants, small rodents (maybe lemmings), hares, small predators like foxes, shrubs, predatory birds like eagles, large herbivores like reindeer or elk, large predators like wolves, bears.