“40%!” –Ocean Oxygen Levels Dropping Worldwide (Today’s Most Popular)

Blue Planet 11

 

“We were surprised by the intensity of the changes we saw, how rapidly oxygen is going down in the ocean and how large the effects on marine ecosystems are,” says Andreas Oschlies, an oceanographer at the Helmholtz Center for Ocean Research Kiel in Germany, whose team tracks ocean oxygen levels worldwide and fear that widespread, sometimes drastic marine oxygen declines are stressing sensitive species—a trend that will intensify with climate change.

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“Earth 2100?” –96% of Ocean Life ‘Gasping for Oxygen’ During Great Dying

 

Permian Extinction

 

The state of the planet in the late Permian—increasing greenhouse gases in the atmosphere that create warmer temperatures on Earth—is similar to today says oceanographer Justin Penn, at the University of Washington: “Under a business-as-usual emissions scenarios, by 2100 warming in the upper ocean will have approached 20 percent of warming in the late Permian, and by the year 2300 it will reach between 35 and 50 percent. This study highlights the potential for a mass extinction arising from a similar mechanism under anthropogenic climate change.”

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