Ocean deoxygenation
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Ocean deoxygenation
planetcare Sun Nov 14, 2021 10:34 am
Ocean deoxygenation
The oxygen content of the ocean has declined by around 2% since the middle of the 20th century overall, while the volume of ocean waters completely depleted of oxygen has quadrupled since the 1960s.
Ocean oxygen levels are expected to fall on average by 3–4% by 2100 overall due to climate change and increased nutrient discharges, though the scale of effect seen will vary regionally.
Consequences of ocean oxygen decline include decreased biodiversity, shifts in species distributions, displacement or reduction in fishery resources and expanding algal blooms.
Ocean deoxygenation threatens to disrupt the ocean’s food provisioning ecosystem services.
To slow and reverse the loss of oxygen, humans must urgently mitigate climate change globally and nutrient pollution locally.
https://www.iucn.org/resources/issues-briefs/ocean-deoxygenation
The oxygen content of the ocean has declined by around 2% since the middle of the 20th century overall, while the volume of ocean waters completely depleted of oxygen has quadrupled since the 1960s.
Ocean oxygen levels are expected to fall on average by 3–4% by 2100 overall due to climate change and increased nutrient discharges, though the scale of effect seen will vary regionally.
Consequences of ocean oxygen decline include decreased biodiversity, shifts in species distributions, displacement or reduction in fishery resources and expanding algal blooms.
Ocean deoxygenation threatens to disrupt the ocean’s food provisioning ecosystem services.
To slow and reverse the loss of oxygen, humans must urgently mitigate climate change globally and nutrient pollution locally.
https://www.iucn.org/resources/issues-briefs/ocean-deoxygenation
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