Global warming could gradually leave without oxygen tropical parts of the ocean, damaging fisheries and coastal economies, a study revealed on Thursday.
eastern areas of the Atlantic and Pacific Oceans with low amounts of dissolved oxygen have expanded in the last 50 years, apparently in line with rising temperatures, according to scientists from Germany and the United States.
And global warming models indicate that the trend will continue because oxygen in the air mixes less readily in warmer water. Large fish such as tuna or swordfish avoid regions deprived of oxygen and are unable to survive in them.
Northern Indian Ocean, along the Arabian Sea and Bay of Bengal are also starved for oxygen, but available data showed no substantial change in the size of the oxygen minimum zone in recent decades.
bands extending Lothar Stramma, lead author at IFM-GEOMAR in Kiel, Germany, said there are signs that the oxygen-low bands between 300 and 700 meters are expanding and moving to shallower coastal waters.
"The expansion of oxygen minimum zones is reaching more and more to the continental shelf areas, "he told Reuters." It's not just the open ocean.
This would upset the fishing industry even more.
http://www.20minutos.es/noticia/374985/0/calentamiento/ global / oceans /
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