Comment by bmitc
4 hours ago
But it's not a bottom up interaction. If whales are killed off from climate change, then those other things can get out of control. Too much algae, and then you have hypoxic environments.
A perfect example of this is when sea otters were nearly hunted to extinction which caused sea urchins to flourish which caused the death of coral and coastal environments which started to affect the larger things that depended on those environments.
My point is that any change to the careful balance can have non-linear effects.
I think we're coming at this from different directions. The OP I responded to originally said: "Warming will kill off most of the systems these animals depend on within 30 years." which isn't what you're talking about. A top-down extinction looks like whaling in the 1800s and we already had that. Now they're on the mend.