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     umich-env-chem-2015.blogspot.com

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

     The ocean is losing oxygen, threatening marine life and fisheries

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   What causes a loss of oxygen in the ocean?

   • The loss of oxygen in the ocean has two major causes: Ocean warming-driven deoxygenation: Warmer ocean water holds less oxygen and is more buoyant than cooler water. This leads to reduced mixing of oxygenated water near the surface with deeper waters, which naturally contain less oxygen. Warmer water also raises oxygen demand from living organisms.

   Ocean deoxygenation - resource - IUCN

   www.iucn.org/resources/issues-brief/ocean-deoxygenation

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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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   Why is deoxygenation a problem in the ocean?

   • As plastic waste pollutes the oceans and fish stocks decline, unseen below the surface another problem grows: deoxygenation. Breitburg et al. review the evidence for the downward trajectory of oxygen levels in increasing areas of the open ocean and coastal waters.

   Declining oxygen in the global ocean and coastal waters | Science - AAAS

   www.science.org/doi/10.1126/science.aam7240

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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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   What causes oxygen stress in marine organisms?

   • Even slight overall reductions in the levels of oxygen dissolved in the oceans can induce oxygen stress in marine organisms by depriving them of an adequate oxygen supply at the tissue level (termed hypoxia). The loss of oxygen in the ocean has two major causes:

   Ocean deoxygenation - resource - IUCN

   www.iucn.org/resources/issues-brief/ocean-deoxygenation

   See all results for this question

   Why is Ocean deoxygenation important?

   • Deoxygenation is one of multiple human-induced stress factors affecting marine ecosystems. Because respiration consumes oxygen and releases carbon dioxide, ocean deoxygenation is often accompanied by ocean acidification, making it necessary to mitigate these stressors together.

   Ocean deoxygenation - resource - IUCN

   www.iucn.org/resources/issues-brief/ocean-deoxygenation

   See all results for this question

3. 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 · Summary: Oxygen is a fundamental requirement of life, and the loss of oxygen in water, referred to as aquatic deoxygenation, is a threat to life at all levels. In fact, researchers describe...

4. www.science.org › doi › 10Declining oxygen in the global ocean and coastal waters

   www.science.org › doi › 10

   Jan 5, 2018 · In estuaries and other coastal systems strongly influenced by their watershed, oxygen declines have been caused by increased loadings of nutrients (nitrogen and phosphorus) and organic matter, primarily from agriculture; sewage; and the combustion of fossil fuels.

   • Author: Denise L. Breitburg, Lisa A. Levin, Andreas Oschlies, Marilaure Grégoire, Francisco P. Chavez, Danie...

   • Publish Year: 2018

5. Videos

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     Water Quality: Dissolved Oxygen

     Feb 28, 2021

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     Ocean Deoxygenation: Our Ocean's Oxygen Supply & Demand Issue

     Dec 8, 2015

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     Understanding Oxygen Toxicity

     Oct 13, 2018

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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.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).

9. 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 · During the day, photosynthesis by algae and plants is triggered by the sunlight and produces a massive amount of oxygen. This leads to oxygen supersaturation, a state where so much oxygen is...

10. www.iucn.org › resources › issues-briefOcean deoxygenation - resource - IUCN

    www.iucn.org › resources › issues-brief

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    Deoxygenation is one of multiple human-induced stress factors affecting marine ecosystems. Because respiration consumes oxygen and releases carbon dioxide, ocean deoxygenation is often accompanied by ocean acidification, making it necessary to mitigate these stressors together.