Climate change is forcing marine life to flee the equator for cooler waters
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▷🥇 El cambio climático impulsa a las especies marinas hacia los polos
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Marine life is fleeing the equator to cooler waters - history shows this could trigger a mass extinction event
8 Apr, 2021 05:20 AM
6 minutes to read As our oceans warm, marine species have tracked their preferred temperatures by moving towards the poles. Photo / File As our oceans warm, marine species have tracked their preferred temperatures by moving towards the poles. Photo / File
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When the same thing happened 252 million years ago, 90 per cent of all marine species died, write Anthony Richardson, Chhaya Chaudhary, David Schoeman and Mark John Costello for The Conversation.
The tropical water at the equator is renowned for having the richest diversity of marine life on Earth, with vibrant coral reefs and large aggregations of tuna, sea turtles, manta rays and whale sharks. The number of marine species naturally tapers off as you head towards the poles.
Published on: Wednesday, April 07, 2021
By: AFP
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Marine life in tropical waters declines when annual average sea temperature rises above 20 to 25 degrees Celsius
PARIS: Warming waters have driven thousands of ocean species poleward from the equator, threatening marine ecosystems and the livelihoods of people who depend on them, researchers reported.
Comparison of data on nearly 50,000 species over three 20-year periods up to 2015 revealed that the exodus from tropical waters is accelerating, they reported in the journal PNAS.
The tropics have long harboured an outsized proportion of marine life, but could see that diversity disappear if climate change is not brought to heel, the authors warned.