Coral Bleaching
Coral bleaching is when a healthy coral becomes stressed, causing the symbiotic zooxanthellae to leave the coral. When the colourful algae leave the coral polyp, this reveals the calcium skeleton, giving the coral a white appearance. Without its zooxanthellae, corals lose a massive proportion of their energy source and are increasingly vulnerable to disease. Coral bleaching Is sometimes reversible if the stress is removed within a short period of time, but if stressors such as temperature persist for long durations, corals will be irreversibly bleached. Between 2014 and 2017 it is thought that more than 75% of the world’s tropical coral reefs experienced bleaching-level heat, and 30% of these reached mortality temperatures. Large-scale bleaching events like this are only going to become more frequent with climate change, and there is genuine concern that many species of coral will become extinct.
Your role
But how can we stop coral bleaching? How can you and I make changes to our daily routine to reduce the risks of coral bleaching? For many of us, coral reefs are extremely far away – so is there actually anyway that we can help?
These are just a few suggestions that you can try in order to help take the stress off our coral reefs. If you’re interested in learning more about carbon emissions and global warming, then follow this link to calculate your carbon footprint, and start making positive changes to your life!
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