By Howard Meyerson
Grand Rapids, Mich. – Federal and state agencies intend to spend $74.2 million over the next two years to keep Asian Carp out of the Great Lakes. New control techniques are being developed and a third electrical barrier is planned for the Chicago Sanitary and Ship Canal, according to federal officials.
“The U.S. Army Corps of Engineers is building the electrical barrier. It will be online by 2017,” said Mike Wiemer, co-chairman of the Asian Carp Regional Coordinating Committee, a multi-agency task force formed in 2009 that released the “2015 Asian Carp Control Strategy Framework” in June, calling for 48 different actions.
Among them is:
* Improved monitoring to assess Asian Carp behavior and population densities and further development of the technology;
* Using piscicides to target and kill carp without harming other species;
* Using chemical attractants to concentrate carp populations so they can be physically removed by commercial fisherman;
* Deployment of sound pressure waves using water guns to deter passage; and
* Development and deployment of carbon dioxide barriers to deter carp passage.
“The U.S. Geological Survey is working on the use of a CO2 device to keep the fish from working between the waterways,” said Weimer, a senior fisheries biologist with the U.S. Fish and Wildlife Service. “They are testing it now and are getting good results. We hope to implement that as soon as possible. And the Army Corp of Engineers is going forward with exploring construction of an aquatic invasive species lock that can be used at strategic locations.” Continue reading