Settling into an Increasingly Hostile World: The Rapidly Closing “Recruitment Window” for Corals

Research on the Belize Barrier Reef reveals that coral recruitment is becoming increasingly challenging due to a rapidly closing 'recruitment window.' The study found that annual coral recruitment rates declined by over 50% within two years, with substrates hospitable to corals being overtaken by inhospitable organisms like sponges. This shift occurs within approximately 9–14 months following a disturbance, after which the environment becomes hostile to coral settlement and survival. The study deployed terra-cotta plates at 10 m depth for 38 months, monitoring changes in benthic communities and their impact on coral spat survivorship.

Arnold, S. N., & Steneck, R. S. (2011). Settling into an Increasingly Hostile World: The Rapidly Closing “Recruitment Window” for Corals. PLoS ONE, 6(12), e28681. https://doi.org/10.1371/journal.pone.0028681