I'm happy to pick up on this.
First of all, it's important to recognize that environmental variability is normal. And secondly, environments adapt. In other words, species and biodiversity adapt to change.
How do we therefore build a system that is able to be adaptive? We need protected areas, we need systems of protected areas, and we need linked systems of protected areas, so that as environment changes it's possible for species, organisms, and systems to move within that system of protected areas. That's the adaptive approach.
Regardless of what will happen with respect to climate change in the future, we can certainly expect the climate to change. But as to what will happen, we don't absolutely know. By consequence, what we need is a framework that allows for change to occur or assumes that change will occur and allows for adaption.