KAUST study reveals how corals control their algae population, paving the way for coral reef restoration

Summary

A KAUST study explains how corals control their symbiotic algae using nutrient competition, tracking carbon and nitrogen isotopes. The research shows that cnidarians limit nitrogen available to the algae, preventing overgrowth and maintaining a balanced symbiosis. This mechanism evolved independently in corals, sea anemones, and jellyfish. Why it matters: The findings have implications for coral reef restoration efforts like the KAUST Reefscape Restoration Initiative by disrupting traditional views of symbiosis.