Interesting article and another example of not so much what nature can do, but what human ignorance has resulted in. In some cases you can add selfishness and greed, but majority of the time it is ignorance and irresponsibility of the offenders for not educating themselves of the consequences of their actions. I'm glad they gave the hybred tree example of Leyland cypress which definitely should not be planted in drier hotter climate areas. But it is just one of thousands of unfortunate situations created by imperfect human error resulting from ignorance. This is why the average person needs to be educated and brought on board with real world responsible understanding of just how ecosystems work and whether or not it would be advisable to bring or not bring in a plant from an opposing ecosytem. Don't get me wrong, I love collecting specimans too. But I've also come to learn that one needs to be cautious and do a bit of research before hand. Tamarisk has been a disaster for the native riparian ecosystems of the southwestern USA.
