Everglades has warmer climate than Alaska. Climate in Alaska is usually very cold and the low temperature limits the biodiversity. When biodiversity is more, species variation is more which means that in case of any natural disaster every species will respond differently and chances of recovery will be more because to begin with there are many species.If not all, at least some will survive and repopulate the area. Lower the biodiversity and species variation, slower will be the recovery from any kind of natural disaster. Hence Everglades ecosystem will recover more quickly from forest fire.
The phrase "Genetic makeup" refers to something like the factors that regulate how much those who look with as well as what physicochemical traits visitors possess.
They seem to be someone's genotype, but once those genetic mutations have been demonstrated, you illustrate or highlight your phenotype.