In fact, no continent has a worse record of human ecological devastation. So, I don't think there's any harm in introducing a new species to the continent in an effort to revive their population.
|Cane Toad. Image: news.mongabay.com|
|Gamba grass. Image: sites.google.com|
Indeed, because no one can be sure the elephants wouldn't chomp down some of the native plants along with the gamba grass.