Europe's orcas are at risk of extinction. Can anything be done to save them?

The killer whale populations in Europe are facing severe declines as a result of hazardous man-made chemicals that have been banned for 30 years. Restriction for disposal of items that contain the chemicals could help save the whales from extinction.

Dave Ellifrit/ The Center for Whale Research/AP
TA new baby orca whale is seen swimming alongside an adult whale in the Haro Strait between San Juan Islands, Wash., and Vancouver Island, Dec. 16. Ecologists are sounding the alarm that orca populations living off the coast of Europe could face extinction as a result of banned chemicals leaching from aging construction materials.

Poisonous chemicals banned decades ago threaten to irreparably harm orca whale populations around areas of Europe, ecologists say.

The study, release Thursday, took samples of 1,000 orca whales, dolphins, and porpoises found that they were being harmed by PCBs (polychlorinated biphenyl). The scientists and study urged stricter rules for disposal of materials containing the toxic chemicals.

PCBs are persistent organic compounds that were once widely used in plastics and building materials. They have been deemed highly toxic to wildlife and humans by public health officials. Although the chemicals were banned decades ago, they can still be released by improper disposal of old paints, electrical equipment, and construction materials from the 1980s.

"It is leaching from landfills into rivers and estuaries, and eventually into the marine environment," lead author of the study Paul Jepson of the Zoological Society of London told the Agence France Presse.

PCBs left in unsealed storage sites can wash into rivers and then be carried into the seabed where they readily pass up the food chain to top predators including whales and dolphins.

"It's really looking bleak ... We think there is a very high extinction risk for killer whales as a species in industrialized regions of Europe," Mr. Jepson told a telephone news conference.

The researchers urge for stronger restrictions on how materials containing PCBs are stored after finding that marine mammals off the coasts of Spain, Ireland, Portugal, Slovenia, and Britain have some of the highest levels of PCPs in the world. Those off the coasts of the United States had notably lower levels, likely because the US banned the compounds in 1979, almost a decade before the European community, which did not prohibit them until 1987.

PCBs, which are resistant to heat, chemical attack, and natural degradation, are notoriously difficult to destroy. 

In 2013, the University of Calgary discovered a way to destroy hazardous PCBs  in soil by using UV light. However, the study urges stricter rules on how products that contain the dangerous chemical are disposed, reducing the chance of PCBs entering the environment.

This report includes material from Reuters.

You've read  of  free articles. Subscribe to continue.

Dear Reader,

About a year ago, I happened upon this statement about the Monitor in the Harvard Business Review – under the charming heading of “do things that don’t interest you”:

“Many things that end up” being meaningful, writes social scientist Joseph Grenny, “have come from conference workshops, articles, or online videos that began as a chore and ended with an insight. My work in Kenya, for example, was heavily influenced by a Christian Science Monitor article I had forced myself to read 10 years earlier. Sometimes, we call things ‘boring’ simply because they lie outside the box we are currently in.”

If you were to come up with a punchline to a joke about the Monitor, that would probably be it. We’re seen as being global, fair, insightful, and perhaps a bit too earnest. We’re the bran muffin of journalism.

But you know what? We change lives. And I’m going to argue that we change lives precisely because we force open that too-small box that most human beings think they live in.

The Monitor is a peculiar little publication that’s hard for the world to figure out. We’re run by a church, but we’re not only for church members and we’re not about converting people. We’re known as being fair even as the world becomes as polarized as at any time since the newspaper’s founding in 1908.

We have a mission beyond circulation, we want to bridge divides. We’re about kicking down the door of thought everywhere and saying, “You are bigger and more capable than you realize. And we can prove it.”

If you’re looking for bran muffin journalism, you can subscribe to the Monitor for $15. You’ll get the Monitor Weekly magazine, the Monitor Daily email, and unlimited access to CSMonitor.com.