Like it or not, "open borders" are beyond our control. No matter how hard we try, with the world's population travelling as much as it does, inumerable species of hitch hikers keep showing up where they don't belong and create havoc with local species that can't beat the competition.
In the long run, nature will meet its own balance. Books have been written about how invasice species upset local balances of nature and took several years to reach new levels of "stability", sometimes to our (subjective) advantages and sometime to our disadvantage.
We think that by spraying toxic poisins we'll be able to control everything but sooner or later we miss somethjing and things get out of control. The best solution is using nature itself to set its new balance, but that takes time and research to find the species whose presence can set things in order. No simple task. With global warming another factor in the picture the situation becomes even more complex.
Maltra has good intentions, but I fear that the locals there have an almost impossible task ahead of them.
I wish them well.
