Showing posts with label invasive species. Show all posts
Showing posts with label invasive species. Show all posts

Tuesday, July 13, 2010

If You Can't Beat 'em... Eat 'em?

That's exactly what Governor Quinn is proposing we do about our Asian Carp problem. These pesky bottom feeders, which are too bony and taste too fishy for our weak American palates, are apparently a delicacy in China. So our esteemed Governor has partnered with the downstate Big River Fisheries and brokered a deal to market this "wild grown" fish to upscale restaurants in China.

The state's initial investment into this innovative initiative is $2 million to upgrade Big River's two facilities, which are some of the only ones in this state already equipped to handle the processing of these massive fish. Projected benefits of this investment include: 60-180 new downstate jobs, a marked reduction of Asian carp in the Mississippi River, and a local product that China actually wants to import. Quinn said that an estimated 30 million pounds of carp will be exported in the first two years of this venture.

Since this unwelcome species was introduced to American waterways down south nearly 30 years ago, they have been migrating north, largely unchecked, destroying native ecosystems as they go. Currently, their continued push has brought them dangerously close to the Great Lakes. If these fish succeed in reaching Lake Michigan, the results could be devastating to nature and industry alike.

Tuesday, January 26, 2010

Asian Carp Video



Guess what, everybody? I finally figured out how to upload video content to my blog! Huzzah! This is a short clip showing just how gross and nasty these Asian carp can be, which I tried to include in a previous post but failed. So watch the video now, and remember to watch your head the next time you're out on the river-- yuck!

Tuesday, January 19, 2010

So Sue Us!

Oh, wait. They already did... the rest of the Midwest, that is. Michigan started it, slapping the State of Illinois with a lawsuit to stop the migration of the Asian Carp toward Lake Michigan by closing the locks on the Illinois Sanitary and Ship Canal. If you recall, this waterway was the site of a massive fish kill last month, an attempt by the Department of Natural Resources and U.S. Army Corps of Engineers to keep the dreaded fish from swimming past the electrical barriers (a device that emits underwater shock waves, designed to keep these fish downstream) while they were shut off for some routine maintenance.

Michigan's governor, Jennifer Granholm (who I actually like-- she was governor during my time in Ann Arbor) launched the initial suit against Illinois, while Indiana, Ohio, Minnesota, and even New York were quick to jump on her legal bandwagon. Our attorney general, Lisa Madigan (who I also like-- she lives in my neighborhood!) argued that the case was misdirected, because the Army Corps of Engineers, and not the State of Illinois, operates the locks on the canal. If Michigan wanted to sue somebody, it should be them.

Bloggers and reporters have been all over this issue since news of the lawsuit broke about three weeks ago; some claim that Daniel Burnham (the guy who, among other things, had some say over reversing the flow of the Chicago River) is spinning in his grave, while others suggest that Michigan should sue the carp themselves for trespassing. I have no desire to get snarky about the matter; we need to do everything we can to protect the Great Lakes, but crippling the state's shipping industry is not the answer! And for the record, when it comes to lawsuits pitting the environment against industry, industry wins out the vast majority of the time. We need another approach.

That's why I was so happy to hear today that the U.S. Supreme Court refused to hear the case, bumping it back down to the state courts. Something needs to be done, but we need scientists-- not lawyers-- calling the shots here. Hoever, this comes at the same time that biologists are saying that Asian Carp DNA (although not the fish themselves... yet) has in fact been found in Lake Michigan, which is a very scary prospect, indeed. Although Michigan was defeated in this round, they are not deterred; they plan on taking their case to Congress, and are lobbying President Obama to force Illinois to cut off an arterial waterway (although I can't be certain, I'm pretty sure that's not his job...) So we certainly haven't heard the last of this story, but the drama continues to unfold.

Friday, December 4, 2009

"Poison Fest"?

Last night, a murder spree of Biblical proportions took place in a six-mile stretch of the Chicago Sanitary and Ship Canal near Romeoville, which is about 40 miles southwest of the city. The killing was both premeditated and indiscriminate, and the resulting carnage is staggering. I'm talking about a decision by the Illinois Department of Natural Resources to dump 2,200 gallons of rotenone, a toxin that is lethal to-- as some expert on the WGN morning news said (in his best movie trailer narration voice)-- "anything with gills". This drastic measure was taken to prevent the Asian carp from continuing their journey from the Mississippi River into Lake Michigan, which, for the Great Lakes ecosystem (and the commercial fishing industry as well) is a "doomsday" destination.

The Asian carp in question is more accurately known as the Bighead carp; of the five known species of carp in this country, all of them came from Asia. This includes the common carp, which was brought over in the 1830s and is now considered to be a native species. The Bighead carp (along with the Silver carp) were deliberately imported from Eastern China in the 1960s and 70s by catfish farmers and wildlife experts to improve water quality and to control aquatic vegetation. The problem is, these huge fish (with voracious appetites) escaped their enclosures in the 1990s (likely after a flood), and entered a number of waterways in this country, namely the Mississippi River. They're bottom feeders that reproduce freely, and they eat such a ridiculous amount of plankton that it disrupts the entire food chain, established long ago by the many species native to these ecosystems. These carp can range anywhere from 50-100 pounds, and they have an especially disturbing habit of responding to boat traffic by leaping out of the water and slapping their huge, scaly bodies into boaters or fishermen or skiers; a number of people have been injured by these giant, flying fish!

This is just one of many failed attempts to control one biological nuisance by importing a species that is not native to the area, which in turn becomes an even bigger nuisance than the pests it was brought in to control! I'm not in favor of indiscriminate chemical controls, either (like those deployed last night), but I'm afraid I don't have a satisfactory solution to the problem at hand.

So what is rotenone, exactly? According to this article from Reuters, it is a "natural poison that prevents fish gills from absorbing oxygen." It goes on to say that it is "used as a broad-spectrum insecticide and pesticide, kills fish and freshwater snails but does not harm other animals. It dissipates within two days, though authorities plan to introduce a neutralizing agent to speed up the process." More specifically, it is a natural pesticide derived from the roots of tropical and subtropical plants and is used in organic gardening, on household plants, and as flea and tick control on pets. The fish and insects affected by this toxin die slowly, but stop eating almost immediately.

Other sources (which I can't verify, so I won't list here) suggest that it may contribute to mammary tumors and changes in blood composition in pets that accidentally inhale or ingest the stuff, and may possibly be linked to Parkinson's Disease in humans who have had chronic exposure. The sentence that bothered me the most in all of my readings was:
"There is considerable controversy over the use of rotenone to kill non-game fish in water body management areas. One study found that the practice has a substantially harmful effect on biodiversity, in which several populations of the native fish showed negligible signs of recovering stocks, while populations of all exotic species are up."

Invasive species are bad-- I get that-- but the killing of any living creature (an estimated 200,000 POUNDS of dead fish are expected to be recovered within the next couple of days!) on such an expansive scale just doesn't sit well with me, especially since early reports have turned up only one big, bad carp and scads of good, native fish. Surely there's a better way... right?