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Preventing water crises
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Preventing water crises

One-sixth of all marine life could perish by the end of the century due to climate change

Warming may reduce marine life by 17 percent. The world’s oceans could lose one-sixth of their fish and other marine life by the end of the century if climate change continues at the present rate – claim marine biologists.

Every single degree Celsius that the world’s oceans warm will reduce the quantity of sea animals by 5 percent, says a computer-based comparative study performed by an international team of marine biologists.

The analysis doesn’t even take the effects of fishing into account – the PhysOrg popular science portal reported.

"We will see a large decrease in the biomass of the oceans unless the world slows climate change,”

said William Cheung, a marine biologist at the University of British Columbia and co-author of the study.

Although water temperature is the strongest factor, climate change may also result in acidification of the oceans and reductions in oxygen content, which will also damage marine life.

"The good news here is that the main building blocks of marine life, plankton and bacteria may decline less heavily, the bad news is that those marine animals that we use directly, and care about most deeply, are predicted
to suffer the most as climate change
is working its way up the food chain,”

said Boris Worm, a researcher at Dalhousie University in Canada.

Every single degree Celsius of warming of the world’s oceans will reduce marine biomass by 5 percent Photo: Shutterstock
Further information: Phys.org

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