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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

Plastic is a slow and painful death sentence for whales

Scientists have studied the cetaceans washed ashore over the last twenty years. The saddest case was that of a 5.3 metre young sperm whale found on the island of Mykonos: it had swallowed 135 pieces of plastic weighing 3.2 kg in total.

40 tonnes of plastic waste removed from the ocean

Environmentalists removed more than 40 tonnes of plastic waste from the Pacific Ocean between Hawaii and California, says a CNN news report.

Oceanic plastic waste is encrusting rocks along the shoreline

The patches of plastic that look like used chewing gum are not only indications of the amount of waste accumulating in the oceans, they also represent a risk for the organisms that live and feed on the rocks.

Billions of people live without clean drinking water and toilets

More than two billion people worldwide have no access to safely managed clean drinking water, while more than four billion people do not have adequate sanitation services, according to a report announced in Geneva by UNICEF, the United Nations Children’s Fund, and the World Health Organisation (WHO).

World record in underwater waste collection

On the 15th of June, 633 divers put on their diving suits and oxygen tanks and dove underwater by the shore of Deerfield Beach in Florida – to pick up litter.

Plastic in the Mediterranean Sea

Although the Mediterranean Sea represents less than 1% of the global ocean area, it contains 7% of the total quantity of microplastics. More than half a million tonnes of plastic are discarded into the sea every year, equivalent to 33,800 half-litre PET bottles thrown away every minute – a report published by the WWF on June 8, World Oceans Day, revealed.

Kisköre flooded with waste

In addition to climate change and global warming, the continuous production of inconceivable amounts of waste is also endangering our environment, and most of that waste consists of single-use plastics.

Giant dead zone in the Gulf of Mexico

Dead zone areas in the region are not new phenomena, but in 2019, the area affected by hypoxia, a condition of low oxygen that can no longer support any form of life has grown much larger than expected, and the cause is likely to be human activities.

Polluted waters may burst out in poisonous flames

An unexpected problem associated with the pollution of lakes came into focus last January, when a highly polluted lake in India caught fire because of the massive quantities of waste in it – and according to locals, it was not first time, either.

Chinese artist exhibits provocative piece consisting of bottled groundwater

The severe pollution of waters is an increasingly alarming problem, with many places around the world having no access to clean drinking water, which may have tragic consequences. In 2018, the Chinese artist Brother Nut put on a special exhibition to bring attention to the damage caused by water pollution.

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