A recent study highlights the detrimental effects of light pollution from coastal cities on coral reefs, particularly in the Red Sea and Persian Gulf. The ALICE project reveals that artificial light at night (ALAN) disrupts the natural spawning cycle of corals, causing them to spawn closer to the full moon, which could hinder fertilization and growth. Coral spawning is crucial for reef recovery after bleaching events, and altered timing can reduce the survival rates of coral eggs, impacting overall reef health.
Researchers utilized a global dataset of coral spawning observations alongside light pollution data, demonstrating that exposure to artificial light likely advances spawning triggers. Solutions, such as delaying nighttime lighting in coastal areas, were proposed, though these changes may raise economic and safety concerns. Dr. Thomas Davies, the study’s lead author, stressed the need to address light pollution to enhance coral survival chances.
This research underscores the importance of understanding and mitigating human-induced stressors like light pollution on marine ecosystems, advocating for immediate action to protect vital coral habitats and maintain ocean biodiversity. The findings were published in Nature Communications, emphasizing the need for awareness and preventive measures in coastal urban development.
