The ongoing decline in ocean oxygen levels is intensifying due to climate change, significantly impacting marine ecosystems, including ...

The ocean's worldwide oxygen content declined by more than 2% Updated: 4:53 AM EST Feb 16, 2017 CNN AP Water SOURCE: AP Advertisement Ocean oxygen levels drop 2% in 50 years, Nature study finds ...

Based on the modeling, the team found five instances of decreased oxygen in the global ocean by 4% to 12% from 290 to 310 million years ago. Each period lasted for roughly 100,000 to 200,000 years.

Decreasing oxygen levels in the ocean is a natural phenomenon, but climate change has been predicted to accelerate this process, which could lead to massive decreases in oxygen levels in deep water ...

"Marine scientists need to understand the distribution of oxygen in the ocean, how much it's changing, where the changes are occurring, and why," said Ahron Cervania, a Ph.D. student in Ito's lab.

Lower levels of oxygen in the Earth's oceans, particularly off the United States' Pacific Northwest coast, could be another sign of fundamental changes linked to global climate change, scientists say.

Researchers have observed long periods of hypoxia, in which oxygen levels are severely low (less than 2-3 milligrams of oxygen per liter of water), or anoxia, meaning no oxygen or less than 0.2 mg/L.

And that’s an amazing thing. It brings cold water, it brings nutrients, it drives the whole food web up on the shelf. However, it does come with lower oxygen from the deep ocean.

The projected warming for the 21st century -- in two different scenarios -- "would have major impacts on ocean ecosystems," and sea levels would continue to rise, according to the article.

The ocean's worldwide oxygen content declined by more than 2% Updated: 3:53 AM CST Feb 16, 2017 CNN AP Water SOURCE: AP ...