Tag: Great Barrier Reefs

GBR Bleached

The Devastating Change That’s Happening to the Great Barrier Reef

Pictured above is a recent photo showing the devastating effects of coral bleaching on the once bright and beautiful Great Barrier Reef. Always regarded as one of the most beautiful and diverse ecosystems on Earth, the once thriving coral reef is now feeling the harsh effects of climate change. A phenomenon called ‘bleaching’ is killing off the corals. Bleaching is a process that happens when abnormal environmental conditions (such as a spike in water temperatures) affect the relationship that the corals have with a species of algae called zooxanthellae. Check out the infographic below for more information:

coral infographic

A recent arial survey of the reef shows that around 95% off the ecosystem is affected by bleaching. Of the 520 reefs surveyed, only four showed no damage.

So what does that mean for the Great Barrier Reef? Well, corals can recover from bleaching if the conditions return to normal and the zooxanthellae are able to repopulate the reefs. However, due to the severe nature of the bleaching, it seems unlikely that many will survive. Professor Terry Hughes, a coral reef expert, estimates that about half of them will die off in the next month or so.

For comparison, check out the beautiful photos at this blog – showing the Great Barrier Reef in its former glory.

The beautiful colors once displayed across Australia's Great Barrier Reef.
The beautiful colors once displayed across Australia’s Great Barrier Reef.

Want to make a difference and inspire positive change in our world? Take action. Stopping climate change begins with the choices we make as individuals. So turn off a light when you leave the room, recycle, and make smart choices when it comes to choosing the products you buy. Check out our list of ways you can help stop climate change here for more information.


Sources:

http://oceanservice.noaa.gov/facts/coral_bleach.html (infographic found here)
http://www.abc.net.au/news/2016-03-28/great-barrier-reef-coral-bleaching-95-per-cent-north-section/7279338