HARROW: A new study conducted by researchers from the University of Washington say that global warming will cause various species from the Equator to swim towards cooler water. While warmer water will speed up the creatures’ metabolic need for oxygen (O2), the warmer water itself will hold less oxygen than ever, drastically limiting the habitat space of marine species.
Curtis Deutsch, lead author and associate professor of oceanography at the University of Washington explains that when your metabolism goes up, you need more food, and also more oxygen. He warns that due to the changes caused by global warming, several marine species could become “oxygen-starved” even if the oxygen levels in the water remain the dame that they’ve always been.
But to make matters worse, he informs that scientists already know that oxygen levels are going down, a d will keep on decreasing. The researchers found that the upper ocean’s metabolic index will be reduced by 20 percent (20%) world-wide, and by 50 percent (50%) in high-latitude northern regions.
The study, published last week, on Friday (June 5, 2015), in the journal Science, compares the fish’s need for more oxygen to that of
a mountain climber going through physical exertion while reaching high altitudes where oxygen levels decrease.
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