Background: The architecturally important coral species and were historically common in the Caribbean, but have declined precipitously since the early 1980s. Substantial resources are currently being dedicated to coral gardening and the subsequent outplanting of asexually reproduced colonies of , activities that provide abundant biomass for both restoration efforts and for experimental studies to better understand the ecology of these critically endangered coral species.
Methods: We characterized the bacterial and archaeal community composition of corals in a Caribbean nursery to determine the heterogeneity of the microbiome within and among colonies.