Declining oxygen in the global ocean and coastal waters
Снижение содержания кислорода в глобальном океане и прибрежных водах
2018-01-05
SCID: 54.1/aaj99c72
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coastal hypoxiamarine and estuarine ecosystemsmicrobial respirationocean deoxygenationoxygen solubility
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Abstract (AI)
Oxygen is fundamental to life. Not only is it essential for the survival of individual animals, but it regulates global cycles of major nutrients and carbon. The oxygen content of the open ocean and coastal waters has been declining for at least the past half-century, largely because of human activities that have increased global temperatures and nutrients discharged to coastal waters. These changes have accelerated consumption of oxygen by microbial respiration, reduced solubility of oxygen in water, and reduced the rate of oxygen resupply from the atmosphere to the ocean interior, with a wide range of biological and ecological consequences. Further research is needed to understand and predict long-term, global- and regional-scale oxygen changes and their effects on marine and estuarine fisheries and ecosystems.
Key Findings
1
Declining oxygen produces broad biological and ecological consequences for marine and estuarine ecosystems and fisheries.
2
Further research is needed to predict long-term, global- and regional-scale oxygen changes and their ecosystem effects.
3
Human-driven warming and increased nutrient discharge are major causes of marine oxygen loss.
4
Oxygen content in the global open ocean and coastal waters has declined for at least the past half-century.
5
Warming reduces oxygen solubility and atmospheric resupply, while nutrient enrichment accelerates microbial oxygen consumption.
Research Object
Oxygen content in the global open ocean and coastal waters
Research Subject
Long-term oxygen decline, its anthropogenic drivers and biogeochemical mechanisms, and its biological and ecological consequences
Publication Details
Publication Date
2018-01-05
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