Complex sentence: Ecologically, the preserve is slightly more elevated than the western Everglades, and Big Cypress has historically served as home to Native Americans, whose descendants include the federally recognized Miccosukee Tribe of Indians of Florida and the Seminole Tribe of Florida.
Split into simpler sentences: Ecologically, the preserve is slightly more elevated than the western Everglades. Their descendants include the federally recognized Miccosukee Tribe of Indians of Florida and the Seminole Tribe of Florida.