It's not true true equilibrium, it oscillates around an equilibrium. You can call it an equilibrium zone. Within this zone you can get chaotic changes, but wha

It's not true true equilibrium, it oscillates around an equilibrium. You can call it an equilibrium zone. Within this zone you can get chaotic changes, but what you don't usually get is complete destruction and extinction as you do when you get an invasive species. It's impossible actually for things to be incredibly chaotic in the sense that they always overload. If this occured all the time you'd never form a sustainable ecosystem. Life would've died out quickly. Essentially Your chaos equation doesn't account for natural selection. This is the factor that holds things in equilibrium. So what you see is sort of a bunch of systems in an evolutionary arms race where each side is in a very stable equilibrium stalemate despite the fact that both sides are continuously evolving counter measures and new strategies.