Tennessee Coal Disaster Threatens Endangered Species

December 26, 2008

On December 22, a forty-acre man-made pond containing millions of gallons of toxic coal ash collapsed in Tennessee, causing a disaster that environmentalists believe could be 30 times larger in scope than the Exxon Valdez oil spill of 1989. That in itself was one of the world's largest oil spills, so the devastation of this recent event may not be fully realized for many months to come. Greenpeace is already calling for a criminal investigation.

One of the worst hit areas was Tennessee's Emory River, which is very close to the source of the waste— a coal-fired Kingston power plant. Dead fish immediately began washing ashore, as documented in the below.

The coal ash spill may be one more nail in the coffin for species already hurt by human activities in the area. Due to known mercury contamination, The Department of Environment and Conservation in Tennessee has issued past precautionary fish consumption advisories for all known fish at Emory River. This river and surrounding regions are home to countless fish, including:

striped bass
black bass
brook trout
multiple catfish
spotted gar
river carpsucker
Northern pike
Cherokee bass
orange-spotted sunfish
white and black crappie
green sunfish
warmouth
redbreast
flier
bluegill
and many more.

Of particular concern now are two already endangered colorful species within the ecosystem affected by the spill: the turquoise shiner and the purple bean mussel.

The turquoise shiner, also called the spotfin chub (Erimonax monachus), was once widespread in waters throughout five states, but now is restricted to just six very small populations. River impoundment, deforestation and pollution from agricultural practices had already been documented as threats to the glimmering fish. Population counts at the river are now unknown.

(Credit: The Virtual Aquarium; VA Fish and Wildlife Service)
Turquoise

The purple bean mussel (Villosa perpurpurea) has suffered tremendously at the hands of humans in past years. In 1998, 156 of the small mussels died as a result of a Clinch River chemical spill. This was the largest kill ever of an endangered species since the Endangered Species Act came into being. Purple bean mussels, which get their name from a purple coloration located on the inside of their shells, are critical members of their ecosystems, living in close contact with tiny fish known as darters and sculpin that spend most of their time on stream and river bottoms. The current population status of purple bean mussels at Emory River also remains unknown.

(Credit: VA Department of Game and Inland Fisheries)
The image shows a male purple bean mussel, a female and 6-month-old juveniles.
Purplebean_2

The extent of the possible damage to this once pristine corridor of the American South is almost too immense to contemplate. We will likely be hearing about the impacts related to this disaster for years to come.

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