Salt-Water Fish Extinction Seen By 2048

The apocalypse has a new date: 2048. That's when the world's oceans will be empty of fish.

Words by Daniel DeNoon

The apocalypse has a new date: 2048.

That's when the world's oceans will be empty of fish, predicts an international team of ecologists and economists. The cause: the disappearance of species due to overfishing, pollution, habitat loss, and climate change.

The study by Boris Worm, PhD, of Dalhousie University in Halifax, Nova Scotia, -- with colleagues in the U.K., U.S., Sweden, and Panama -- was an effort to understand what this loss of ocean species might mean to the world.

The researchers analyzed several different kinds of data. Even to these ecology-minded scientists, the results were an unpleasant surprise.

"I was shocked and disturbed by how consistent these trends are -- beyond anything we suspected," Worm says in a news release.

"This isn't predicted to happen. This is happening now," study researcher Nicola Beaumont, PhD, of the Plymouth Marine Laboratory, U.K., says in a news release.

"If biodiversity continues to decline, the marine environment will not be able to sustain our way of life. Indeed, it may not be able to sustain our lives at all," Beaumont adds.

Already, 29% of edible fish and seafood species have declined by 90% -- a drop that means the collapse of these fisheries.

But the issue isn't just having seafood on our plates. Ocean species filter toxins from the water. They protect shorelines. And they reduce the risks of algae blooms such as the red tide.

"A large and increasing proportion of our population lives close to the coast; thus the loss of services such as flood control and waste detoxification can have disastrous consequences," Worm and colleagues say.

The researchers analyzed data from 32 experiments on different marine environments.

They then analyzed the 1,000-year history of 12 coastal regions around the world, including San Francisco and Chesapeake bays in the U.S., and the Adriatic, Baltic, and North seas in Europe.

Next, they analyzed fishery data from 64 large marine ecosystems.

And finally, they looked at the recovery of 48 protected ocean areas.

Their bottom line: Everything that lives in the ocean is important. The diversity of ocean life is the key to its survival. The areas of the ocean with the most different kinds of life are the healthiest.

But the loss of species isn't gradual. It's happening fast -- and getting faster, the researchers say.

Worm and colleagues call for sustainable fisheries management, pollution control, habitat maintenance, and the creation of more ocean reserves.

This, they say, isn't a cost; it's an investment that will pay off in lower insurance costs, a sustainable fish industry, fewer natural disasters, human health, and more.

"It's not too late. We can turn this around," Worm says. "But less than 1% of the global ocean is effectively protected right now."

Worm and colleagues report their findings in the Nov. 3 issue of Science.

SOURCES: Worm, B. Science, Nov. 3, 2006; vol 314: pp 787-790. News release, SeaWeb. News release, American Association for the Advancement of Science.

This article was originally published here.

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Comments (2)
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MaryFinelli
MaryFinelli

"Dr. Worm’s study was recently published in the journal Science and is an update of a study published in 2006. Importantly, the study is about the collapse of commercial catches, not species extinction. Catch collapse means that fish are caught at 10% or less of the rate they had been caught historically.

Several media outlets have incorrectly stated that the study warns all seafood will be gone from the oceans. CBS News, for example, reported that "the apocalypse has a new date: 2048" and that the oceans would be empty of fish at that time. To our knowledge, the television network has not issued a retraction. 'We never said that,' says Dr. Worm. 'We never talked about extinction. We talked about the collapse of the commercial catches.'

Still, Worm and his international team of scientists and economists say that catch collapses paint a grim picture for the ocean and for human health. The accelerated loss of biodiversity, they say, is imperiled by overfishing, pollution, habitat loss and climate change. Saltwater ecosystems, including human populations that depend on it for survival, can be adversely affected by dwindling populations. Harmful algae blooms, coastal flooding and poor water quality can be the results of reduced fish populations.

'Biodiversity is a finite resource, and we are going to end up with nothing left...if nothing changes,' says Worm."

Horsedrag
Horsedrag

Obviously, since half the phytoplankton has gone because of PCB laced marine microplastic. The oceans demise and ours will come from what washes off our streets. Overfishing, no spawning fish meet this filth head on never returning to the sea. The few that do eat the new plankton, PCB laced marine microplastic. Migration and starvation will be the end result. As the ocean and plankton goes we go. We need not pause and wait for global warming.



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