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Entries in barrier (3)

Friday
Dec092011

Asian Carp Could Be on Way to Mille Lacs Lake, Other Minnesota Fisheries

Asian carp DNA has been found above a key barrier on the Mississippi River in Minnesota. The good news is that no live fish have been found.

But if the exotic species are above Coon Rapids Dam, they could move into the Crow and Rum River systems and possibly even into Mille Lacs Lake.

“We believe that the risk is just too high to not assume that there are live fish upstream,” said Tim Schlagenhaft, Mississippi River manager for the Department of Natural Resources. “Consequently, we need to move forward.”

Read more here.

And in related news:

A federal report showing that cargo traffic on Chicago-area waterways has been flat or declining for 15 years was quickly embraced by those who support closing locks or installing barriers to keep invasive species like the Asian carp out of the Great Lakes.

Michigan officials, who have joined other states in a lawsuit to have some Chicago-area locks closed, pointed to the findings as evidence that the Great Lakes shipping industry would not be dramatically affected if barriers were erected.

"Those findings are in agreement with the study that we commissioned two years ago that found that canal traffic was not only declining but was a far less than significant portion of the Chicago economy," said John Sellek, a spokesman for the Michigan attorney general's office.

Thursday
May122011

Nitrogen Bubbles Might Keep Carp Out of Great Lakes

A couple of scientists have a good idea about how to keep Asian carp from entering the Great Lakes through canals that connect to the Mississippi River basin. But so far, no one seems to be interested.

“The best part is it's completely reversible and environmentally friendly,” says Dr. Dave Chesney, a chemistry professor at Michigan Tech.  “You take nitrogen out of the air next to the river, you bubble it through the water and it goes right back into the air."

To find out more about bubbling nitrogen as a barrier, go here.

Friday
Jan142011

Michigan Continues Fight to Keep Carp Out of Great Lakes

 

 

 

Michigan has renewed its efforts to keep Asian Carp out of the Great Lakes and potentially devastating a billion-dollar-sport fishery.

If carp are denied entry into the Great Lakes --- and, sadly, I don't think that they will be--- it will be despite the feds, not because of them. Alongside Illinois, they have put up barriers against the efforts of Michigan and other Great Lakes states, instead of against the carp, to keep them from migrating from the Mississippi River basin and into Lake Michigan through a manmade connection.

Already carp DNA has been found in mulitiple places above the electric barrier and a live carp was found above it as well. In response, the Obama administration appointed a carp czar and initiated a five-year study.

As a result, Michigan Attorney General Bill Schuette announced that he will keep the pressure on to stop carp from entering the Great Lakes through Lake Michigan. In a press release provided me by Rick Balabon of the Michigan Steelhead and Salmon Fishermen's Association, Schuette said:

Continued