Quantcast

Oil Spills Can Disrupt Entire Aquatic Food Web, New Study Shows

BP oil spill led to baby dolphin deaths and diseases along the Gulf Coast. Truth Wire

From dead fish to beaches covered in sludge, the immediate damage from an oil spill is easy to see.

But a new study, published this week in the journal Archives of Environmental Contamination and Toxicology (AECT), found that the damage caused by these spills are much wider in scope and can indirectly disrupt the entire aquatic food web.


The 2010 Deepwater Horizon oil spill, which released 134 million gallons of oil into the Gulf of Mexico, killed thousands of marine mammals and contaminated their habitats.

But researchers in the AECT study found that the mass mortalities also led to a dramatic spike in forage fish populations such as menhaden in the years after the blowout.

Menhaden are tiny fish that are prey to a wide range of marine predators such as larger fish, birds and cetaceans such as fin whales and dolphins. With many of their predators gone, these tiny fish were able to quickly multiply.

According to the study, "these releases from predation led to an increase of Gulf menhaden biomass in 2011 to 2.4 million t, or more than twice the average biomass of 1.1 million t for the decade prior to 2010."

"Our discovery suggests that the structure of food webs change after an oil spill, which may be much more damaging to fish and other aquatic fauna than the direct impacts of the spilled oil itself," explained lead researcher Jeffrey Short.

The new analysis "underscores the need to study not just those species obviously affected, but also the entire food web, during oil spill assessments," a press release for the study states.

"While the direct effects of oil spills on ecosystems have been well documented, this new study following the Deepwater Horizon blowout in 2011 provides the first indication that oil spills can alter the nature of entire aquatic food webs," said Peter S. Ross, editor-in-chief of AECT.

Sponsored
IKEA is working on a specially-designed, air-purifying curtain called the GUNRID. IKEA

Air pollution within the home causes 3.8 million deaths a year, according to the World Health Organization. A recent University of Colorado in Boulder study reported by The Guardian found that cooking a full Thanksgiving meal could raise levels of particulate matter 2.5 in the house higher than the levels averaged in New Delhi, the world's sixth most polluted city.

But soon, you will be able to shop for a solution in the same place you buy your budget roasting pans. IKEA is working on a specially-designed, air-purifying curtain called the GUNRID.

Read More Show Less
The first member of the giant tortoise species Chelonoidis phantasticus to be seen in more than 100 years. RODRIGO BUENDIA / AFP / Getty Images

A rare species of giant tortoise, feared extinct for more than 100 years, was sighted on the Galápagos island of Fernandina Sunday, the Ecuadorian government announced.

Read More Show Less
Sponsored
Elena Pueyo / Moment / Getty Images

By Adda Bjarnadottir, MS

Opinions on coffee vary greatly—some consider it healthy and energizing, while others claim it's addictive and harmful.

Read More Show Less
Morning fog over a boreal forest in Alaska. Alan Majchrowicz / Stockbyte / Getty Images

By Jennifer Skene and Shelley Vinyard

For most people, toilet paper only becomes an issue when it unexpectedly runs out. Otherwise, it's cheap and it's convenient, something we don't need to think twice about. But toilet paper's ubiquity and low sticker price belie a much, much higher cost: it is taking a dramatic and irreversible toll on the Canadian boreal forest, and our global climate. As a new report from NRDC and Stand.earth outlines, when you flush that toilet paper, chances are you are flushing away part of a majestic, old-growth tree ripped from the ground, and destined for the drain. This is why NRDC is calling on Procter & Gamble, the manufacturer of Charmin, to end this wasteful and destructive practice by changing the way it makes its toilet paper through solutions that other companies have already embraced.

Read More Show Less
Cycling advocates set up "ghost bikes," like this one in Brooklyn, in memory of bikers killed in traffic. Nick Gray / CC BY-SA

By John Rennie Short

As cities strive to improve the quality of life for their residents, many are working to promote walking and biking. Such policies make sense, since they can, in the long run, lead to less traffic, cleaner air and healthier people. But the results aren't all positive, especially in the short to medium term.

Read More Show Less