Bubble Barrier Tweaked for Asian Carp

  • Scientists are always looking for a new deterrent for the Asian Carp. (Photo courtesy of the U.S. Fish and Wildlife Service)

Scientists across the region are expanding their arsenal of technology to fight invasive species. One research team hopes to use sound and bubbles to keep an invasive fish out of the Great Lakes. The Great Lakes Radio Consortium’s Shawn Allee has more:

Transcript

Scientists across the region are expanding their arsenal of technology to fight invasive species. One research team hopes to use sound and bubbles to keep an invasive fish out of the Great Lakes. The Great Lakes Radio Consortium’s Shawn Allee has more:


For years, biologists worried Asian Carp could enter Lake Michigan through a canal near Chicago. The Army Corps of Engineers is building an electric barrier at the canal to block the carp’s progress.


But researchers at Illinois-Indiana Sea Grant are devising a back-up plan. Researcher Mark Pegg says new devices could shoo fish away with bubbles and sound.


“The bubbles themselves are causing a lot of turbulence in the water that the fish don’t like. On top of that, they’re emitting a really loud noise, at least to the fish anyway, so that’s sort of a one-two punch.”


Pegg says the combination of bubbles and sound works in another way too. Bubbles actually amplify underwater noise, so sound travels further. The Sea Grant team will continue testing the devices. In the meantime though, even if it works, the project might hit a roadblock: the existing barrier program has no extra money for the system.


For the GLRC, I’m Shawn Allee.

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