From the AP via How Appealing:

TRAVERSE CITY, Mich. (AP) — The U.S. Supreme Court on Tuesday refused to order immediate closure of shipping locks near Chicago to prevent Asian carp from infesting the Great Lakes.

The court rejected a request by Michigan for a preliminary injunction to close the locks temporarily while a long-term solution is sought to the threatened invasion by the ravenous fish. The one-sentence ruling didn’t explain the court’s reasoning.

Asian carp, primarily bighead and silver varieties, have been migrating up the Mississippi and Illinois rivers toward the Great Lakes for decades. They have swarmed waterways near Chicago leading to Lake Michigan.

Scientists fear that if they reach the lakes, they could disrupt the food chain and endanger the $7 billion fishery.

The biggest Asian carp can reach 4 feet in length and weigh 100 pounds while consuming up to 40 percent of their body weight daily in plankton, the foundation of the Great Lakes food web.

Many scientists say they could starve out popular species such as trout and salmon.

They also are spooked by passing motors and often hurtle from the water, colliding with boaters forcefully enough to break bones.

Officials poisoned a section of the canal in December after discovering genetic material that suggested at least some carp might have eluded an electric barrier on the Chicago Sanitary and Ship Canal and could be within six miles of Lake Michigan. If so, the only other obstacles between them and the lake are shipping locks and gates.

Last week, the U.S. Army Corps of Engineers said additional carp DNA – but no live fish – had been found in three different spots along the Chicago River within a mile of where it flows into Lake Michigan.

Michigan, joined by Minnesota, New York, Ohio and Wisconsin and the Canadian province of Ontario, asked the high court to order the locks closed as a stopgap measure while considering a permanent separation between Lake Michigan and the Mississippi River basin. Continue reading →

From SCOTUSblog:

The Supreme Court refused on Tuesday to order emergency measures sought by the state of Michigan to stop the migration of an invasive fish species, Asian carp, toward Lake Michigan from rivers and a sanitary canal in Illinois.  Without comment, the Court refused to issue a permanent injunction that would have closed waterway locks and required other temporary measures in reaction to the discovery of the carp upstream in Illinois rivers.  The Court’s order did not dispose of Michigan’s plea to reopen a decades-old decree to address the carp migration issue on its merits. That will come later in cases 1, 2 and 3 Original, Wisconsin, Michigan and New York v. Illinois.