OUR VIEWS: Better plan needed to stop carp

Oct 22, 2012

 

They're spectacular leaps by huge fish, some weighing up to 100 pounds.

These are Asian carp, brought into the United States as a management tool for aqua culture farms and sewer treatment facilities. But they've escaped from the confines of the ponds and have infested waterways throughout the Midwest, especially the Mississippi River basin.

Scientists and environmentalists are terrified of what will happen should Asian carp enter the Great Lakes. They predict that these voracious carp would decimate the food chain and have catastrophic effects on native fish populations.

In Lake Michigan, that means salmon and lake trout, perch, bass and walleye — and the billions of dollars these fish bring to our local economy each year.

Although there’s some worry of Asian carp appearing in Lake Erie, the most pressing threat comes from the Chicago River, which connects with the Illinois River and, eventually, the Mississippi.

The only thing keeping Asian carp at bay is an electronic barrier located on the Chicago River, 37 miles from the Windy City’s downtown. Only one Asian carp has been found beyond that barrier, in 2010.

But in the past year, Asian carp environmental DNA has been found in Chicago-area waters very close to Lake Michigan.

Scientists don’t know whether so-called environmental DNA, or “eDNA,” signals the presence of live fish or could have come from another source, such as bilge water from ships or feces from fish-eating birds. Still, government policy requires an intensive search whenever three consecutive rounds of sampling yield positive results.

An extensive search of the Chicago River was conducted over a 6-mile stretch of the Chicago River just last week. Commercial fishing crews placed nets in the water, and government employees used electronic stunning devices to catch fish in shallower waters.

Hopefully, those searches come up empty. But, regardless of the results, the fact is Asian carp are coming, and we need to do all we can to keep these devastating invaders at bay. One electronic barrier is not enough. There have been cases where the barrier has gone down due to power outages.

A plan is in place to speed up development to prevent migrations of Asian carp into the Great Lakes. That plan is scheduled for release in late 2015. That's not good enough. Too much is at stake.

This problem has been on the back burner for more than a decade, and now the problem is staring us square in the face.

If these destructive invaders are allowed to reach Lake Michigan, the lake as we know it — along with the Grand River and all other connecting waterways — will suffer irrevocable damage. We can't let that happen.

Our Views reflects the majority opinion of the members of the Grand Haven Tribune editorial board: Kevin Hook, Cheryl Welch, Matt DeYoung, Liz Stuck and Fred VandenBrand. What do you think? E-mail us a letter to the editor to news@grandhaventribune.com or log-in to our website and leave a comment below.

Comments

Vladtheimp

These are Asian carp, brought into the United States as a management tool for aqua culture farms and sewer treatment facilities. I don't understand how an alien species could have been brought into the U.S. without any approvals or controls. It seems they were brought into the U.S. in the 70's to assist local fish farms, but I haven't been able to find how that was achieved, given environmental sensitivities even in the 70's. I would really appreciate any information from folks who know how and why this species was introduced into the Great Lakes without any federal control. Thanks in advance for your help!

43°North

they were never 'introduced into the Great Lakes' Vlad. They were farmed down south, and escaped into the Mississippi river because of storm surge flooding. Don't know what you are smoking fella...

Vladtheimp

Sorry, I used the wrong word - I didn't mean "introduced" I was wondering how they got here - still wondering how they were "introduced" into the United States for a specific purpose without some control by the federal government. Thanks for drilling it down!

Wingmaster

The genie is out of the bottle! Have we ever been successful stopping a non native species from entering the Great Lakes? I'm for any kind of control we can put in place, just think what ever we do will be too little to late!

43°North

obviously the comments removed from this post weren't going the way someone wanted them to...all gone??

 

Post a Comment

Log in to your account to post comments here and on other stories, galleries and polls. Share your thoughts and reply to comments posted by others. Don't have an account on GrandHavenTribune.com? Create a new account today to get started.