Low Oxygen level , Oxygen level in sea declining rapidly-Because of Global Warming , Oceans are losing their oxygen as the Earth warms.

According to the study , Coral bleaching is caused purely by warmer waters, when it's nearly 1 degree Celsius above the normal highest temperatures for an area.


Oxygen level in sea declining rapidly-Because of Global Warming


According to Scientific Research :
Global warming is making the world's oceans sicker, depleting them of oxygen and harming delicate coral reefs more often. In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies, including estuaries and seas, low-oxygen sites have increased more than 10-fold since 1950. Scientists expect oxygen to continue dropping even outside these zones as Earth warms.


Oceans are losing their oxygen


Denise Breitburg which is a lead author and marine ecologist with the Smithsonian Environmental Research Center said that "Oxygen is fundamental to life in the oceans". "The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth's environment."


To halt the decline, the world needs to rein in both climate change and nutrient pollution, an international team of scientists including Lisa Levin, a biological oceanographer at Scripps Institution of Oceanography at the University of California San Diego, asserted in a new paper published in Science.


Coral bleaching is caused purely by warmer waters


Conclusion from the study:
There are more than 32 million square kilometres of ocean with low oxygen levels at a depth of 200 metres


That amounts to an area bigger than the continents of Africa or North America, an increase of about 16 per cent since 1950
Some low oxygen levels in the world's ocean are natural, but not this much, Breitburg said


A combination of changes in winds and currents -- likely from climate change -- is leaving oxygen on the surface, and not bringing it down lower as usual





On top of that, warmer water simply doesn't hold as much oxygen and less oxygen dissolves and gets into the water


Coral bleaching is caused purely by warmer waters, when it's nearly 1 degree Celsius above the normal highest temperatures for an area


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