What is a recent, dangerous threat to the Everglades ecosystem?
Burmese pythons, Cuban tree frogs, and Nile monitor lizards.
These three species, which are not native to Florida, have established breeding populations in the Everglades. They are predators which hunt and out-compete native species, and they have no natural enemies. Unfortunately, they are too well-established to be eliminated, though efforts are continuing to control them.