"A lot of these invasive exotics come from southern climates, and they won’t be able to withstand a cold spell for this long,” said Linda Friar, a spokeswoman for Everglades National Park. “And as they die off, the native species, the alligators and birds, are happily consuming them."It would be neat if mother nature took care of a few invasives, but I think it's more likely that this will leave the most hardy ones to reproduce.
I can't help being a little sad about the iguanas. I've worked with them before and I'm a huge fan. I wouldn't mind having one as a pet some day. They're a bit like scaly cats; intelligent, aloof, but they can show affection and they seem to like attention.