Menu
RSS
Rain disaster affected nears126,000

Rain disaster affected nears126,000

The National Disaster Man...

Mahendran in Singapore

Mahendran in Singapore

The Attorney General yest...

Railway workers on 48-hr strike

Railway workers on 48-hr strike

A group of Sri Lanka Rail...

50 Greatest Players in World Cup History

50 Greatest Players in World Cup History

Playing as a striker thro...

VAT to be reduced by 2.5 % in 2020: Mangala

VAT to be reduced by 2.5 % in 2020: Mangala

Finance and Mass Media Mi...

New SEC commissioners finally appointed

New SEC commissioners finally appointed

Former Commissioner Ran...

Tea export volume up 4% in April

Tea export volume up 4% in April

Sri Lanka shipped 20.8 Mn...

Trump Calls Off Upcoming North Korea Summit

Trump Calls Off Upcoming North Korea Summit

WHITE HOUSE — It's off — ...

Prev Next

770

Hotter Seas Threaten Marine Wildlife with Extinction, Researchers Say

Hotter Seas Threaten Marine Wildlife with Extinction, Researchers Say

Polar bears and other iconic animals could be extinct by the end of the century if ocean temperatures continue to rise at the current rate, marine biologists warned Monday.

Warming temperatures caused by climate-changing emissions may result in a catastrophic loss of marine wildlife and drastic changes to ocean food webs by 2100, scientists at the Florida Institute of Technology and the University of North Carolina said in a paper published in the journal Nature Climate Change.

Ocean temperatures on rise

Much current marine life will be unable to tolerate ocean temperatures that are projected to increase by 2.8 degrees Celsius on average, according to the study.

“With warming of this magnitude, we expect to lose many, if not most, animal species from marine protected areas by the turn of the century,” said the study's lead author, John Bruno, a biologist at the University of North Carolina-Chapel Hill.

Marine protected areas, established as sanctuaries for polar bears, coral reefs and other wildlife threatened by human activities such as fishing and oil extraction, have failed to protect species from the impacts of global warming, the scientists said.

In Florida Keys National Marine Sanctuary, a large number of corals already have been destroyed by bleaching and diseases related to higher temperatures, the study noted.

Poles are most at risk

The protections in place will be ineffective by 2100 if greenhouse gas emissions continue to rise at the current rate, researchers said.

Reduced oxygen concentrations in the ocean — one consequence of global warming — will make marine protected areas uninhabitable to most species, they argued.

Richard Aronson, a co-author of the study and head of the department of ocean engineering and marine sciences at Florida Tech, told the Thomson Reuters Foundation that wildlife in the Arctic and Antarctic is particularly at risk.

“Oceanic warming is happening most rapidly at the poles. Warming will threaten polar ecosystems generally, including iconic wildlife like polar bears and penguins,” he said in an email.

Oceans absorb gases

Around 90 percent of the heat trapped by greenhouse gases is absorbed by oceans, Aronson said.

“We have to take bold steps individually and as a society to control emissions. Shifting away from our dependence on fossil fuels would be a major step in the right direction,” he said.

“Stabilizing emissions over the next few decades could cut the rate of warming in half,” he added.(Voanews)

back to top