Ocean Warming Harms Marine Oxygen Producers

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© Natalie Kellogg / University of Washington Climate change reduces productivity of Prochlorococcus, a central oxygen supplier on Earth

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Important tingling in danger: The cyanobacterium Prochlorococcus produces around one fifth of the earth's oxygen – but perhaps not for long. Because this phytoplankton species reacts surprisingly sensitively to heat: Already from 28 degrees water temperature, its reproduction breaks drastically, as revealed by a study. This could reduce the global productivity of Prochlorococcus by up to 38 percent by 2100. But what would the consequences be? Th…

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The phytoplankton of the oceans forms the basis of marine food chains and the earth's oxygen production. However, one of the most important representatives of these marine oxygen producers, the cyanobacterium Prochlorooccus, could be severely affected by climate change, as researchers have discovered. During more than 100 measurement trips through various parts of the Pacific, they found that while prochlorococcus at water temperatures of up to …