I am not sure weather I picked the right forum - mods please adjust in case I'm wrong.
I am reading the book "Where do Camels belong?" and I find it a very interesting read and really adds to my own observations.
Probably not everyone here agrees to what he says so I'd like to open a discussion.
One of his conclusions is that it is not the introduced species which causes the harm but that the landscape is altered to such an extend that the introduced species move in and no matter what you are doing natives don't grow back. He as well questions the argument that natives are superior to exotic species.