TWO TIME SCALES. “If one were to go into any multi-cellular eukaryote ecosystem, pick a species at random, kill off 99.9 % of its population, and then measure how long it would take the species to recover, the result might be a year or more for a mouse, and a century or more (if then) for elephants. For some prokaryotes, the time to recover from a 99.9 % population cull could be 24 h or less.”
https://standardsingenomics.biomedcentral.com/articles/10.1186/s40793-016-0180-8