30 Sep '15, 6pm

Want to slow climate change? Stop killing sharks

With shark attacks on the rise in Australia, a handful of researchers gathered in Sydney on Tuesday to discuss potential shark repelling technologies. A new study published in Nature Climate Change , however, suggests that repelling sharks from vegetated coastal areas — or even more drastic options like partially culling shark populations — could be bad news for the climate. (And, it probably goes without saying, bad news for the sharks.) The Guardian reports : With about 90% of the world’s sharks and other large predator fish wiped out through overfishing and culling, potential prey such as sea turtles, stingrays and crabs have flourished. As a result, turtles have been free to munch their way through larger amounts of seagrass and crabs have been able to disturb a greater amount of seabed sediment. Such consequences have “far reaching consequences on carbon cycling and, ...

Full article: http://grist.org/news/want-to-slow-climate-change-stop-ki...

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