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Fencing Out Aliens:

In 2002, the U.S. Army Corps of Engineers, working with other federal agencies, constructed an underwater electric fence across the Chicago Sanitary and Ship Canal to prevent aliens — in this case, Asian carp — from making their way into Lake Michigan. Five years later, it appears to be working, at least for now. The Washington Post reports :

The Corps is planning to replace the original barrier with a new, more powerful one capable of lasting at least 20 years, but that project is in limbo because of funding shortfalls and safety concerns.

Half of the new "fence," known as Barrier 2A, is completed, but it cannot be turned on because sparks have been seen jumping between barges that collided in the electrified area; such sparks could trigger an explosion or injure crew members. The Corps, contractors Smith-Root and the U.S. Coast Guard are trying to figure out how to solve that problem. In the meantime, the Coast Guard has barred barges from mooring or passing in the area of the old barrier.

The two halves of the new barrier would each consist of a 130-foot stretch of electrified steel rods running under the canal, with 220 feet in between each half.

The EPA has more here.

Jeek:
The Republicans have now forfeited the Asian Carp Vote for all time!
7.9.2007 9:27am
JB:
Can't we just overfish them? That seems to work for cod, salmon, and other species.
7.9.2007 10:03am
John Burgess (mail) (www):
Carp don't put up much of a fight, other than using their mass to head for the bottom. Nor do most Americans (those not of Eastern European or Asian descent) find them tasty.

Find a way to change either of those states and carp would be liable to overfishing. Otherwise, they're a self-protected species. Sort of like lampreys. Even Medieval recipes for 'lamprey pie' haven't done much to get them to the fishmongers' counters.
7.9.2007 11:32am
Triangle_Man:
If an electric fence is an effective barrier, I wonder if it might be possible to create a mobile version to drive the carp into a progressively smaller stretch of river.
7.9.2007 11:38am
Happyshooter:
Those things are going to kill all the fishing in the Great Lakes.

Our buffon government can't get the barrier built, which means they are coming fast.
7.9.2007 12:38pm
Alex from CA:
Those poor fish are being disenfranchised and deprived of their rights!
7.9.2007 12:53pm
rarango (mail):
john Burgess: try fishing carp on light tackle (fly rods or UL Spinning gear, 4 lb test). In shallow water, they are almost as good as bone fish.
7.9.2007 2:50pm
Constitutional Crisis (mail):
Way to compare Mexicans to invasive parasitic fish, ya dirtbag.
7.9.2007 4:14pm
whackjobbbb:
If those carp get into Lake Michigan... the terrorists win.


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Where's Cheney? He's good at killing off fish, I understand.
7.9.2007 4:15pm
gasman (mail):
Constitutional Crisis:
Why do you think it was Mexicans that were the unnamed comparison group?
You are the only one who brought up the comparison of Mexicans with invasive parasitic fish.
7.9.2007 4:56pm
Constitutional Crisis (mail):
Just a joke, dude. Although the title of the post "Fencing Out Aliens" is evocative of the ongoing debate about the southern border and immigration policy.
7.9.2007 7:01pm