The immediate effect will be to decrease diversity. 2 degrees C is not a small temperature change and remember that is the average change and it is not evenly distributed over the surface of the earth. Ocean current are temperature driven and the warm Pacific water is upsetting a lot of cold water fish and wild life.
Given a few hundred thousand years the diversity will begin to increase provided we can stabilize temperatures. Any creature living in a micro climate is probably under major distress at the moment.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.