Journal Article climate change Research Support, U.S. Gov't, Non-P.H.S. Caribbean Caribbean coral reefs Coral reef Florida keys Porites Pseudodiploria strigosa Research Support, Non-U.S. Gov't Siderastrea siderea Symbiodiniaceae calcification chlorophyll coral reefs cryptic lineage extreme reefs global warming light harvesting microbiome ocean acidification ocean warming reef-building coral sclerochronology skeletal extension thermal tolerance