Two Years After the BP Spill, Gulf Oysters Are Full Of Heavy Metals

<a href="http://www.flickr.com/photos/mpieracci/1470305365/sizes/m/in/photostream/">mpieracci</a>/Flickr

Fight disinformation: Sign up for the free Mother Jones Daily newsletter and follow the news that matters.


On the second anniversary of the Deepwater Horizon explosion, evidence of the spill’s ongoing impacts on Gulf people and ecosystems continues to mount. As if eyeless shrimp, toxic beaches, and dead dolphins weren’t bad enough, a new study suggests that Gulf oysters are also in trouble.

A team of scientists led by Dr. Peter Roopnarine of the California Academy of Sciences says that oysters in the Gulf contain higher concentrations of the heavy metals found in crude oil now than they did before the spill. Using a method known—awesomely—as “laser ablation inductively coupled plasma mass spectrometry,” the scientists vaporized oyster shells and ionized them, separating out different elements according to their mass and making it possible scientists to identify them.* They measured higher concentrations of vanadium, cobalt, and chromium—three heavy metals present in oil—in the oysters sampled after the spill. Even more worrisome, the team found that 89 percent of post-spill specimens displayed the signs of metaplasia, a condition in which tissues are transformed in response to stress. Oysters suffering from the condition often have trouble reproducing, which could have worrisome implications for oyster populations and the species further up the food chain that depend on them.

Scientists don’t yet know how trace metals like those found in the oysters move through food chains, or what effects they could have on high-level consumers, including people. This study is just the start of a broader effort to understand the impacts of heavy metals on Gulf ecosystems: the team is planning to conduct a similar analysis of mussels, and hopes to model the potential impacts of the spill on the Gulf food web. For now, though, the study provides more evidence that the oil spill’s effects are still being felt, and are likely to continue long into the future. The findings are particularly troubling in light of past studies indicating that the combination of heavy metal pollution and warmer temperatures is especially deadly for oysters—a fact that doesn’t bode well in an age of warming seas.

It’s yet another piece of bad news for Louisiana’s oystermen, who are still struggling to recover from the double whammy of Katrina and the BP spill, and faced with consumers afraid to eat the oysters they do manage to harvest. For many, particularly in the African-American, Cajun, and Croatian communities, oyster fishing is a tradition stretching back generations; for them, the long-term effects of the spill threaten to put an end to a way of life with a proud heritage. It’s also bad news for the state’s economy, which reaped around $300 million from oyster sales in good years before the spill. And of course, it’s bad news for lovers of the region’s iconic sandwich, the oyster po’boy.

One bright spot amidst the often-bleak Gulf Coast news comes in the form of the RESTORE Act, which has been slowly winding its way through Congress over the past year. If enacted, it would deliver much-needed funds—80 percent of BP’s Clean Water Act fines—to coastal communities and coastal restoration projects; fingers crossed that the bad news about ongoing ecosystem and social impacts will have a silver lining in the form of greater impetus for the act’s passage.

 

Correction: The original version of this article stated that the elements were identified according to the light that they radiated rather than their mass. Thanks to a commenter who pointed out the error, it has been corrected.

 

WE CAME UP SHORT.

We just wrapped up a shorter-than-normal, urgent-as-ever fundraising drive and we came up about $45,000 short of our $300,000 goal.

That means we're going to have upwards of $350,000, maybe more, to raise in online donations between now and June 30, when our fiscal year ends and we have to get to break-even. And even though there's zero cushion to miss the mark, we won't be all that in your face about our fundraising again until June.

So we urgently need this specific ask, what you're reading right now, to start bringing in more donations than it ever has. The reality, for these next few months and next few years, is that we have to start finding ways to grow our online supporter base in a big way—and we're optimistic we can keep making real headway by being real with you about this.

Because the bottom line: Corporations and powerful people with deep pockets will never sustain the type of journalism Mother Jones exists to do. The only investors who won’t let independent, investigative journalism down are the people who actually care about its future—you.

And we hope you might consider pitching in before moving on to whatever it is you're about to do next. We really need to see if we'll be able to raise more with this real estate on a daily basis than we have been, so we're hoping to see a promising start.

payment methods

WE CAME UP SHORT.

We just wrapped up a shorter-than-normal, urgent-as-ever fundraising drive and we came up about $45,000 short of our $300,000 goal.

That means we're going to have upwards of $350,000, maybe more, to raise in online donations between now and June 30, when our fiscal year ends and we have to get to break-even. And even though there's zero cushion to miss the mark, we won't be all that in your face about our fundraising again until June.

So we urgently need this specific ask, what you're reading right now, to start bringing in more donations than it ever has. The reality, for these next few months and next few years, is that we have to start finding ways to grow our online supporter base in a big way—and we're optimistic we can keep making real headway by being real with you about this.

Because the bottom line: Corporations and powerful people with deep pockets will never sustain the type of journalism Mother Jones exists to do. The only investors who won’t let independent, investigative journalism down are the people who actually care about its future—you.

And we hope you might consider pitching in before moving on to whatever it is you're about to do next. We really need to see if we'll be able to raise more with this real estate on a daily basis than we have been, so we're hoping to see a promising start.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate