You have touched on the property about systems that people don't really internalize well. When you're inside and part of a system and perturb it, the impact of the perturbation may activate parts of the system that you were unaware existed.
But it is also true that if you say, "Climate change is really only a big deal for the currently dominant flora and fauna, the planet as an ecosystem has been in many different states from ice ball to volcanic hell hole." :-) In geologic time it doesn't "matter" at all.
It is a good paper, and I've added it to the list of things that are changing that may influence climate changes (another is what happens with cloud formation when we have more moisture in the air due to rising atmospheric average temperatures, the IPCC model gives one result if we get more stratospheric clouds, and another if we get more clouds in the troposphere.)
But it is also true that if you say, "Climate change is really only a big deal for the currently dominant flora and fauna, the planet as an ecosystem has been in many different states from ice ball to volcanic hell hole." :-) In geologic time it doesn't "matter" at all.
It is a good paper, and I've added it to the list of things that are changing that may influence climate changes (another is what happens with cloud formation when we have more moisture in the air due to rising atmospheric average temperatures, the IPCC model gives one result if we get more stratospheric clouds, and another if we get more clouds in the troposphere.)