Pressure Mounts to Keep Asian Carp out of Great Lakes

Milwaukee Riverkeeper continues to demand immediate closure of navigational locks that separate Chicago rivers from Lake Michigan.  We have been working with environmental groups from across the nation to stop the invasive Asian Carp, which can grow to over 100 pounds and wreak havoc on our Great Lakes' ecosystem and area rivers. 

The Obama Administration recently pledged $78.5 million to address the problem.  However, as the article below indicates, measures short of closing the locks are still be considered.

[excerpted from the Green Bay Gazette]

Scientists are stepping up the quest for new poisons and other tools that could prevent Asian carp from gaining a foothold in the Great Lakes, Obama administration officials told a congressional panel Thursday.

U.S. Geological Survey experts are looking at short- and long-term methods of reining in the invasive fish amid rising fears they may have eluded electrical barriers on Chicago waterways and are poised to colonize Lake Michigan, said Leon Carl, the agency's Midwest executive.

"The pressure is on our scientists," Carl said, adding that money provided under the Obama administration's $78.5 million carp control plan would help researchers make progress. "I think we're going to do some really exciting research."

Nancy Sutley, head of the White House Council on Environmental Quality, said the studies and other proposals in the government plan have good prospects to succeed — despite complaints from many in the region that the strategy is inadequate because it doesn't close shipping locks that could open a carp pathway to the lake.

"The Great Lakes face perhaps their most serious threat from invasive species yet in the Asian carp," Sutley said during a Senate Water and Power Subcommittee hearing in Washington, D.C. "We think, however, there's a chance to stop this invasive species before it gets established."

The carp, the largest reaching 100 pounds and 4 feet long, have migrated up the Mississippi and Illinois rivers for decades and infested rivers and canals near Chicago that flow into Lake Michigan.

If a large population spreads across the Great Lakes, the plankton gobblers could unravel the food chain and starve out prey fish on which popular sport varieties such as salmon depend. Silver carp, one of the invasive species, sometimes spring from the water and collide with boaters.

Scientists say even if some carp reach Lake Michigan, as DNA evidence suggests already might have happened, it doesn't necessarily mean all is lost. The key is preventing them from reproducing in large numbers — a top goal of USGS researchers, Carl said.