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   Why is oxygen loss a problem?

   • This loss of oxygen compounds problems from ocean warming and acidification, threatening marine life and fisheries around the world, according to a new report by the IUCN. The loss of oxygen in the ocean is increasingly disrupting ecosystems and threatening top predators such as tuna, marlin and sharks. But it is not a new problem.

   The ocean is losing oxygen, threatening marine life and fisheries

   oceansolutions.stanford.edu/news/ocean-losing-oxygen-threatening-marine-life-and-fisheries

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   Why are oxygen levels decreasing in lakes and oceans?

   • The decline in oxygen levels in lakes is 2.75 to 9.3 times higher than the decline in oxygen in the world's oceans, which has also raised concern among scientists about the health of aquatic life. The fact that water can't hold as much oxygen at warmer temperatures is a main factor in decreasing oxygen levels in both lakes and oceans.

   Bad news for fishing: Climate change is sucking the oxygen out of lakes

   www.cbc.ca/news/science/oxygen-climate-lakes-1.6059334

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   What causes ocean oxygen loss?

   • The major drivers of ocean oxygen loss are climate change and nutrient pollution, with the latter affecting coastal areas. As the ocean warms, its waters hold less oxygen and become more buoyant, resulting in reduced mixing of the oxygen-rich water near the surface with the ocean depths, which naturally contain less oxygen.

   Marine life, fisheries increasingly threatened as the ocean ... - IUCN

   www.iucn.org/news/marine-and-polar/201912/marine-life-fisheries-increasingly-threatened-ocean-loses-oxygen-iucn-report

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   How does low ocean oxygen affect life on Earth?

   • Very low ocean oxygen can also affect basic processes like the cycling of elements crucial for life on Earth, such as nitrogen and phosphorous, the report warns.

   Marine life, fisheries increasingly threatened as the ocean ... - IUCN

   www.iucn.org/news/marine-and-polar/201912/marine-life-fisheries-increasingly-threatened-ocean-loses-oxygen-iucn-report

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   How important is oxygen in the ocean?

   • The importance of maintaining adequate levels of oxygen in the ocean is perhaps best summarized by the motto of the American Lung Association: “if you can’t breathe nothing else matters.” Climate change and nutrient pollution are driving life-sustaining oxygen out of the ocean and coastal waters, through a phenomenon known as deoxygenation.

   The ocean is losing oxygen, threatening marine life and fisheries

   oceansolutions.stanford.edu/news/ocean-losing-oxygen-threatening-marine-life-and-fisheries

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   Is Ocean deoxygenation a problem?

   • The review report, " Ocean deoxygenation: Everyone's problem ", is the largest peer-reviewed study so far into the causes, impacts and possible solutions to ocean deoxygenation. Ocean regions with low oxygen concentrations are expanding, with around 700 sites worldwide now affected by low oxygen conditions – up from only 45 in the 1960s.

   Marine life, fisheries increasingly threatened as the ocean ... - IUCN

   www.iucn.org/news/marine-and-polar/201912/marine-life-fisheries-increasingly-threatened-ocean-loses-oxygen-iucn-report

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2. theconversation.com › from-the-coast-to-the-deepFrom the coast to the deep sea, changing oxygen levels affect ...

   theconversation.com › from-the-coast-to-the-deep

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   Apr 23, 2024 · In some locations including the Red Sea, very salty brine pools or submarine lakes on the seabed are bursting with life, despite there being no oxygen. Bacteria, crabs, mussels and eel-like...

3. www.journals.uchicago.edu › doi › fullImpacts of Low Oxygen on Marine Life: Neglected, but a ...

   www.journals.uchicago.edu › doi › full

   Aug 29, 2022 · Oxygen has acted as a major driver of the evolution of life, marine ecosystems, and biogeochemistry, by exerting an important influence over organism physiology and distribution (Deutsch et al., 2015).

4. Videos

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     Understanding Oxygen Toxicity

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     What If the Oceans Lose Oxygen?

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5. www.sciencedaily.com › releases › 2024Loss of oxygen in lakes and oceans a major threat to ...

   www.sciencedaily.com › releases › 2024

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   Jul 15, 2024 · Aquatic habitats with low oxygen levels are commonly referred to as "dead zones" because of their loss of life, which threatens ecosystem services like fishing, aquaculture, tourism, and...

6. www.sciencealert.com › earths-water-is-rapidlyEarth's Water Is Rapidly Losing Oxygen, And The Danger Is ...

   www.sciencealert.com › earths-water-is-rapidly

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   Jul 19, 2024 · Supplies of dissolved oxygen in bodies of water across the globe are dwindling rapidly, and scientists say it's one of the greatest risks to Earth's life support system. It's getting harder to breathe down there.

7. oceansolutions.stanford.edu › news › ocean-losingThe ocean is losing oxygen, threatening marine life and fisheries

   oceansolutions.stanford.edu › news › ocean-losing

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   Dec 9, 2019 · Climate change and nutrient pollution are driving life-sustaining oxygen out of the ocean and coastal waters, through a phenomenon known as deoxygenation. This loss of oxygen compounds problems from ocean warming and acidification, threatening marine life and fisheries around the world, according to a new report by the IUCN.

8. www.iucn.org › news › marine-and-polarMarine life, fisheries increasingly threatened as the ... - IUCN

   www.iucn.org › news › marine-and-polar

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   Dec 7, 2019 · Ocean oxygen loss, driven by climate change and nutrient pollution, is a growing menace to fisheries and species such as tuna, marlin and sharks, according to the report released today at the UN Climate Change conference in Madrid.

9. www.cbc.ca › news › scienceBad news for fishing: Climate change is sucking the oxygen ...

   www.cbc.ca › news › science

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   Jun 10, 2021 · Fish could be left gasping for air as oxygen levels plunge in the world’s freshwater lakes due to climate change, a new study suggests.