Almost every shallow-water coral reef on the planet faces ecosystem collapse by 2075, UN advisors say

The latest assessment from UN advisors paints a dire picture for the world's coral reefs, with 96% of reefs across 80 countries facing endangerment due to global heating. This is a stark warning, as coral reefs support a quarter of all marine species and provide vital ecosystem services, including shoreline protection and livelihoods for millions of people. The predicted collapse of these ecosystems by 2075 is a pressing concern that demands immediate attention from policymakers and the general public.

The main driver of this impending collapse is rising sea temperatures, which cause coral bleaching - a stress response that can be fatal for corals. As global temperatures continue to rise, the frequency and severity of these bleaching events will only increase, making it difficult for coral reefs to recover. This is particularly concerning for tropical regions, where coral reefs are not only crucial for biodiversity but also for the local economies that depend on them. The reef tourism industry, for example, generates billions of dollars each year and provides employment for thousands of people.

What's next to watch is how governments and conservation efforts respond to this crisis. The UN advisors' report serves as a wake-up call for urgent action to reduce greenhouse gas emissions and protect coral reefs from local threats such as overfishing and pollution. The coming years will be critical in determining the fate of these ecosystems, and it remains to be seen whether sufficient action will be taken to mitigate the worst effects of climate change on coral reefs. Key developments to monitor include the implementation of reef conservation initiatives and the progress of global climate talks, particularly in terms of countries' commitments to reducing emissions and transitioning to renewable energy sources.

Originally reported by theguardian.com. ClimateNews adds analysis for climate & energy readers.