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Fish Kills Worry Gulf Scientists, Fishers, Environmentalists

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opednews.com Headlined to H2 8/27/10

Reprinted from IPS

Dead fish wash up at Port Fourchon, Louisiana.
Credit:Erika Blumenfeld/IPS

Ocean Springs, Mississippi - Another massive fish kill, this time in Louisiana, has alarmed scientists, fishers and environmentalists who believe they are caused by oil and dispersants.

On Aug. 22, St. Bernard Parish authorities reported a huge fish kill at the mouth of the Mississippi River Gulf Outlet.

"By our estimates there were thousands - and I'm talking about 5,000 to 15,000 - dead fish," St. Bernard Parish President Craig Taffaro told reporters. "Different species were found dead, including crabs, sting rays, eel, drum, speckled trout, red fish, you name it, included in that kill."

The next day, a thick, orange substance with tar balls and a "strong diesel smell" was discovered around Grassy Island, near the fish kill, according to a news release.

Taffaro admitted that there was oil in the area, but cautioned against assuming it was the cause of the fish kill.

Dr. Ed Cake, a biological oceanographer, as well as a marine and oyster biologist, has "great concern" about this fish kill, and many others in recent weeks, which he feels are likely directly related to the BP oil disaster.

"As a scientist, my belief is that this fish kill is 75 percent likely due to hypoxic conditions, not enough oxygen in the water to sustain life," Dr. Cake said. "Because it was both bottom dwelling fish and crab, and other fish from the middle of the water column, whatever caused this covered the entire water column. That gives me great concern. The scientist in me says there was some other triggering mechanism."

Dr. Cake believes the "triggering mechanism" is likely oil and toxic dispersants from the BP oil disaster.

Recent weeks have seen other huge fish kills. One occurred in Mississippi from Long Beach to Pass Christian, and another at Cat Island. The kill earlier this week in East St. Bernard Parish is of note, because taken in the context of the other two, all of these areas share the same body of water that which comprises both of the Mississippi and Chandeleur Sounds.

On Aug. 18, a team from Georgia Sea Grant and the University of Georgia released a report that estimates that 70 to 79 percent of the oil that gushed from the well "has not been recovered and remains a threat to the ecosystem."

Nevertheless, regarding the St. Bernard Parish fish kill, the head fisheries biologist for the state of Louisiana, Randy Pausina, blamed it solely on hypoxic conditions caused by extreme heat mixed with nutrient-rich waters.

But Dr. Cake, along with commercial fishermen and Gulf Coast environmentalists, are drawing direct parallels to BP's oil disaster and the use of toxic dispersants as the likely cause of the increased numbers of fish kills they are witnessing.

"There are several parallels to the spill," Dr. Cake added. "We have evidence from fisherman operating in the VOO [Vessels of Opportunity] fleet and fishermen in the area who observed the spraying of dispersants by both aircraft and vessels in the immediate vicinity of the fish kills. Therein lies one triggering mechanism."

He said another factor is that dispersed oil "provides nutrients for phytoplankton, and this may have triggered a bloom of plankton, otherwise known as a red tide, and you would then have a fish kill from the red tide organisms. I understand that the phytoplankton out there is causing fish kills, but still the triggering mechanism is the presence of the oil and dispersants."

"A fish kill from a red tide, as I've observed, causes fish to come to the surface to be in distress, flopping around, and slowly they die, and new ones come up. This was not observed in any of these kills. All we had was a massive amount of dead fish coming to the surface," he said.

Two commercial fishermen in Mississippi who worked in BP's VOO programme, James Miller and Mark Stewart, recently told IPS they were eyewitnesses to BP spraying dispersants via airplane and from boats into areas of the Mississippi Sound, as well as outside the barrier islands.

"Right now there's barely any shrimp out there to catch," David Wallis, a fisherman from Biloxi, told IPS. "We should be overloaded with shrimp right now. That's not normal. I won't eat any seafood that comes out of these waters, because it's not safe."

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DAHR JAMAIL He is author of the book Beyond the Green Zone: Dispatches from an Unembedded Journalist in Occupied Iraq. Jamail's work has been featured on National Public Radio, the Guardian, The Nation, and The Progressive. He has received many (more...)
 

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Nalco Statement on EPA Dispersant Test ResultsNalc... by dottykalm on Saturday, Aug 28, 2010 at 9:01:50 AM