Confused malcontents swilling Chardonnay while awaiting the Zombie Apocalypse.
Jenifer (Zarknorph) said:
"A Lord Howe Island expert says a cloud forest at the top of towering Mt Gower is bursting with native plant and animal life after rats and mice were eradicated."
Unfortunately, it's only isolated islands that you can remove all man-introduced invasive species from.
Australia would be a biological paradise if all the introduced species that kill and out compete native animals were eliminated, but you'd have to do without dogs, cats, sheep, rabbits, cattle, camels, wild horses, wild pigs and all the rest of the destructive introduced species.