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Mangroves that line the Everglades and Florida Bay are migrating landward in response to coastal saltwater intrusion, but this migration is only predicted to keep pace with sea level rise that is less than 1 ft. (0.3 m) over the next century (NPS 2009).

The Florida Keys are already experiencing effects of storm surge, overwash, and salinity encroachment, and increasing sea level rise could reduce the amount of habitat available to endangered species such as the Key deer (Odocoileus virginianus clavium) and silver rice rats (Oryzomys palustris natator). An increase in intensity of storms could further contribute to loss of habitat, destruction of natural barriers, and direct mortality of wildlife. For example, Hurricane Andrew, a category 5 storm, destroyed over 80% of the mangroves in the vicinity of Highland Beach in Everglades National Park (Smith et al. 1994).