The acidification of our oceans due to carbon emissions is at its highest level in 300m years and has emerged as a major threat to marine life. Another reason why we must move away from fossil fuels and reduce emissions – instead of building more infrastructure for cars.
Thanks to blog visitor Margie for the video link.
The Guardian reports:
Carbon dioxide in the atmosphere is absorbed by the seas – at least a third of the carbon that humans have released has been dissolved in this way, according to the Intergovernmental Panel on Climate Change – and makes them more acidic. But IPSO found the situation was even more dire than that laid out by the world’s top climate scientists in their landmark report last week.
In absorbing carbon and heat from the atmosphere, the world’s oceans have shielded humans from the worst effects of global warming, the marine scientists said. This has slowed the rate of climate change on land, but its profound effects on marine life are only now being understood.
Acidification harms marine creatures that rely on calcium carbonate to build coral reefs and shells, as well as plankton, and the fish that rely on them. Jane Lubchenco, former director of the US National Oceanic and Atmospheric Administration and a marine biologist, said the effects were already being felt in some oyster fisheries, where young larvae were failing to develop properly in areas where the acid rates are higher, such as on the west coast of the US. “You can actually see this happening,” she said. “It’s not something a long way into the future. It is a very big problem.”