invasive species

Environment
4:11 pm
Mon May 23, 2011

Stepping up the fight against Asian Carp

Asian carp at the Shedd Aquarium in Chicago
flickr Kate Gardiner

Federal and state officials have a new plan for dealing with the threat of Asian Carp invading Lake Michigan.    There are fears that the carp may destroy the Great Lakes fishing industry. 

The plan includes stepping up tracking of the invasive fish species and contracting with Illinois fishermen to catch the carp before they can reach Lake Michigan.

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Environment
11:11 am
Thu April 28, 2011

A predator for the crop-damaging invasive stink bug?

The native ranges of Brown marmorated stink bugs are found in China, Japan, Korea and Taiwan. But they hitched a ride to the U.S. and are enjoying some tasty crops here.
PSU Dept. of Entomology

The invasive skunk of the insect world has been found in four counties in Michigan.

Here are the counties where the Brown marmorated stink bug has been found:

  • Berrien
  • Eaton
  • Genesee
  • Ingham

If the bug feels threatened, or if you squish it, this stink bug... stinks.

But the damage it can do to crops is what has officials in Michigan worried.

The PSU Department of Entomology says the Brown marmorated stink bug damages fruit and vegetable crops by sucking plant fluids through its beak.

A piece in lansingnoise.com estimated the damage it could do:

The U.S. Department of Agriculture late last year looked at the potential damage to crops. Topping the list was the country's $2.2 billion apple industry. Michigan's share is $115 million worth, or 590 million pounds of apples harvested each year.

"I have these growers telling me that they fear this might be the worst pest in a generation for orchards," said Denise Donohue, executive director of the Michigan Apple Committee, which represents the state's apple industry.

The bug has proven it can resist pesticides, so what's to be done?

Sabri Ben-Achour filed a report for NPR on how some researchers are looking into using foreign wasps to fight the bug:

Can wasps squash the stink bug plague?

Trissolcus wasps are from China, Japan and Korea. The same place where the invasive stink bug came from. The wasps are natural enemies of the Brown marmorated stink bug, so researchers want to know if they can release them in the U.S. without harming other native stink bugs that are beneficial.

The researchers say it will take them three years to find out. In the meantime, some farmers will continue to try to fight the bug with pesticides - Ben-Achour reports some farmers are asking the EPA to relax pesticide regulations.

Environment
12:15 pm
Tue April 26, 2011

Salmon fishery on the rocks

The Chinook salmon was initially introduced to the Great Lakes in the 1870s. Michigan, New York and Wisconsin reintroduced the Chinook salmon to the Great Lakes in 1966.
Photo courtesy of USFWS

There’s a decision looming for Lake Huron that would have been unthinkable 10 years ago. The state must decide whether it should keep putting chinook salmon in the lake. The fish has been the driving force behind sport fishing in the Great Lakes. But the salmon’s future in the Upper Lakes is now questionable.

It’s hard to overstate how drastically salmon transformed the Great Lakes after they were introduced more than 40 years ago.

Ed Retherford is a charter boat captain on Lake Huron. He says in the old days on a weekend in Rockport he’d see cars with boat trailers backed up for a mile or two waiting to launch. But that’s all gone now.

“You’d be lucky, except maybe for the brown trout festival, you’d be lucky to see twenty boats there on a weekend. It just decimated that area. You can imagine the economics involved.”

Chinook or king salmon practically disappeared from Lake Huron about seven years ago. Most of the charter boats are gone now because the kinds of fish that remain are just not as exciting to catch as salmon.

State officials figure little towns like Rockport lose upwards of a million dollars in tourism business every year without the fishery.

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Environment
12:00 pm
Thu March 24, 2011

Rebranding the Great Lakes Seaway

The Dutch-flagged, Dane-piloted Avonborg was carrying 75 wind turbine blades to Burns Harbor, Indiana, on Lake Michigan, on the opening day of the St. Lawrence Seaway.
Photo by David Sommerstein

Another sure sign of spring: the Great Lakes shipping season kicked off this week.

Millions of tons of cargo travel by boat on the Great Lakes every year– freighters from the Atlantic Ocean that enter the Lakes by way of the St. Lawrence Seaway. The first freighter of the 53rd Seaway season eased through the locks in Montreal on Tuesday. David Sommerstein visited Montreal for the opening ceremonies.  He found out that Seaway officials are trying to rebrand the Seaway:

The first freighter rumbling into the St. Lambert Lock was the Dutch-flagged "Avonborg."  It was loaded up with wind turbine parts.

David spoke with Terry Johnson, the U.S. chief of the St. Lawrence Seaway:

"Wind turbines have been increasingly coming in and it’s nice to be able to see something that is visual. This is good."

The windmill parts bound for Indiana aren’t just a good photo opp. They’re the perfect image the Seaway wants to project these days – that it’s the greenest, cheapest way to transport goods. Shipping is far more fuel efficient than trucking.

Ross Fletcher of BBC Chartering contracted this ship.

"Those 75 blades represent 75 truckloads that aren’t going to travel between Montreal and the U.S. Midwest, so we’re taking 75 truckloads off the highways."

The Seaway’s been trying to reinvent itself since it was built in the 1950s.

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Economy
11:05 am
Mon March 21, 2011

Invasive insect still biting local budgets

The invasive Emerald Ash Borer was first found in the U.S. in June of 2002. Since its arrival, the bug has wiped out millions of ash trees in Michigan alone.
USDA Forest Service

The emerald ash borer is native to eastern Russia, northern China, Japan, and Korea. It turned up in Michigan in June of 2002, most likely from wood used in packing materials in international cargo ships.

Since its arrival, the bug has led to the death of tens of millions of ash trees.

Removing these trees can be expensive and while some cities have seen the financial bite come and go, others are still feeling it.

Eric Dresden writes in the Saginaw News that the city is unsure how it will pay for the removal of hundreds of dead ash trees. From the Saginaw News:

Of the 6,000 ash trees lining the city’s streets, Simeon Martin expects thousands could be dead by the end of this year.

The cause: an emerald ash borer infestation brewing for at least nine years.

“When spring comes out, that will be the tell-tale time,” said Martin, chief foreman of the city’s streets division.

Last year, the city found 400 dead trees, and this year could be a lot worse, he said. Those trees were removed, and the city is continuing to take down infested ashes, Martin said. This year, he said, the infestation is expected to grow faster than crews can take down the trees.

Dresden reports the city has no money set aside for the removal of dead and dying trees, and when the trees are removed, no new trees are being planted because the city doesn't have the budget to maintain them.

Environment
2:58 pm
Thu February 24, 2011

Beekeepers' favorite invasive

Spotted knapweed, or star thistle, is a favorite of bees. Some beekeepers say star thistle honey puts Northern Michigan on the map.
(Photo by Flickr user JanetandPhil)

Researchers from Michigan State University are trying to control an invasive plant called spotted knapweed. They’ve released two foreign beetles that eat the plant on small plots of state land.

Knapweed spreads a carpet of purple flowers over old farm fields and alongside roads in mid-summer.

But as The Environment Report's Bob Allen discovered, beekeepers rely on those flowers for making honey.

Spotted knapweed tends to dominate any landscape where it takes hold. Its roots send out a chemical substance that kills nearby plants.

But researchers in several states think they’ve found a way to keep it in check. They’ve released two species of tiny European weevils.

One attacks knapweed’s roots, the other eats its seeds.

Doug Landis is a bug specialist at Michigan State University. He says in some test plots the bugs have knocked knapweed back as much as 80%.

“These insects don’t eliminate knapweed. But they can reduce its density to the point where it becomes a more manageable part of the plant community.”

Knapweed is found in every county in Michigan but especially in sandy soils. And land managers want to get rid of it because it crowds out native wildflowers and grasses that supply food and shelter to a wide variety of insects, birds and other wildlife.

But beekeepers say the plant has a lot of value for them. They even have a more poetic name for it... star thistle. And they say it produces a light, mild, pleasant tasting honey that puts northern Michigan on the map.

“It’s one of the best honeys in the country.”

Kirk Jones runs Sleeping Bear Apiary in Benzie County.

He says his star thistle honey is in demand in stores and restaurants across the country.
And it’s the only source of surplus nectar available for his bees late in the season.

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Science
12:07 pm
Fri February 18, 2011

US House rejects Michigan lawmaker's request to hold up money for Chicago canal

Michigan congressman Dave Camp had hoped he could cut off federal funding to reopen the Chicago Sanitary Canal.  The canal could be the main path of Asian Carp may take from the Mississippi River watershed to Lake Michigan.   The Associated Press reports last night's vote wasn't close: 

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Environment
4:24 pm
Fri February 4, 2011

Invasive brown marmorated stink bugs found in Michigan

The Brown marmorated stink bug. Spook it and it might put its stink on you, but the real worry is what it could do to crops in the state.
David Lance USDA APHIS

The Michigan Department of Agriculture has confirmed the presence of invasive brown marmorated stink bugs (BMSB) in two Michigan counties. The bugs were discovered by students from Michigan State University.

Jennifer Holton is with the Michigan Department of Agriculture. She says the bugs can do damage to the types of fruits and vegetables grown in Michigan. The damage makes them difficult to sell. 

And what is does is... a little bit of character distortion on the fruit, what they refer to as cat facing, and that makes the fruit, or the vegetable, if there may be one, unmarketable for the fresh market.

You can find more information about identifying BMSB at the Michigan Department of Agriculture website.

Holton also suggested never moving firewood and to contact your local Michigan State University extension office if you think you found a brown marmorated stink bug.

-Bridget Bodnar, Michigan Radio Newsroom

Environment
4:19 pm
Fri January 14, 2011

Playing matchmaker for sea lampreys

The mouth of a lamprey. It uses suction, teeth, and a razor sharp tongue to attach itself to its prey.
Photo by U.S. Fish and Wildlife Service

Sea lampreys are invasive parasites found in every one of the Great Lakes. It’s a fish with a round mouth like a suction cup. It latches onto big fish like trout and salmon... and kills them by drinking their blood.

It costs fisheries managers in the U.S. and Canada 20 million dollars a year to control the lamprey.

There’s one secret weapon in development that could eventually save them money... pheromones. Those are odors that male lampreys release to attract the lady lampreys.

I called Nick Johnson with the Michigan lamprey research team to find out how the team's third and final year of testing these pheromones is going.

You could call him a lamprey matchmaker.

"Pheromones are typically species specific, so they should have minimal impact to other species, they're highly potent, effective at very low concentrations. So once they're developed they could be applied relatively cheaply and with little environmental impact."

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Environment
10:49 am
Thu January 6, 2011

New Great Lakes leadership

The view from the Empire Bluff hiking trail.
Photo by Rebecca Williams

Governor Rick Snyder picked outgoing Republican state Senator Patty Birkholtz to lead the Office of the Great Lakes. As you might guess, the director of this office oversees all things Great Lakes. Birkholtz will advise the governor and make policy recommendations on everything from Asian carp to water use.

Birkholtz says protecting the Great Lakes will lead to a stronger economy.

“When we have a healthy Great Lakes system we have more jobs here in this state as well as regionally, and if we don’t have a healthy Great Lakes system it’s a detriment to not only the jobs situation but also businesses locating here."

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Environment
5:01 pm
Thu December 16, 2010

More cash to battle Asian Carp

Silver carp are sensitive to vibrations and often jump when a motorboat passes by.
USFWS

The Obama Administration announced it will dedicate more resources to keep Asian Carp out of the Great Lakes.

Today, a coordinated group of state and federal agencies released the 2011 Asian Carp Control Strategy Framework.

In it the group calls for increased monitoring and further study on the pathways carp can use to get into the Lakes.

The Detroit Free Press reports the framework calls for:

$47 million worth of new projects... to combat Asian carp and prevent their spread to the Great Lakes. The new work includes a new laboratory in Wisconsin that will do increased DNA sampling for Asian carp around the lakes, aiming to take 120 samples per week.

The additional money is expected to come from money that was originally allocated from other Great Lakes clean-up projects.

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Asian Carp
6:58 am
Wed December 15, 2010

New law bans importation of bighead carp into U.S.

Asian Carp threaten the Great Lakes' ecosystem
Kate.Gardner/Flickr

There's a new federal law that bans bringing bighead carp into the U.S. The bighead carp is among the Asian carp species that threatens the ecosystem of the Great Lakes.

President Obama signed the bill known as  The Asian Carp Prevention and Control Act yesterday. The Associated Press reports that the measure:

...adds bighead carp to a list of wildlife that cannot be imported or taken across state lines. The only exceptions would be for scientific, medical or educational purposes and would require a permit. Bighead and silver carp have infested waterways in the Chicago area. Authorities are trying to prevent them from getting into the Great Lakes, where they would compete with native fish for food.

The bill was written by Michigan Democratic Senator Carl Levin and sponsored by Michigan's other Democratic Senator Debbie Stabenow.

Environment
10:02 am
Fri December 10, 2010

Michigan steps up the war on wild boar

Rural Michigan is fighting a war with feral swine and wild boars.   The problem is getting worse.   Now, the state is about to take a major step up declaring them an "invasive species"


The Associated Press reports:


Michigan's fight against feral swine and wild boar is escalating.  Department of Natural Resources and Environment Director Rebecca Humphries announced Friday she signed an order declaring the swine an invasive species in Michigan.

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Invasive Species
11:02 am
Thu December 9, 2010

Sooper Yooper

Yeah, that's a wetsuit under his flannel shirt.
Painting by Mark Heckman, courtesy of Thunder Bay Press.

With 180 invaders already in the Great Lakes, it might take a superhero to keep them out.  Luckily, we have one: Sooper Yooper!   A new children's book written by Mark Newman and illustrated by the late Mark Heckman, features Billy Cooper, an ex-Navy Seal who lives in the U.P. with his scuba-diving bulldog, Mighty Mac.  I spoke with Mark Heckman's wife, Diane, and author Mark Newman about the book and Mark Heckman's legacy.

Top 3 Things to Know about Sooper Yooper:

  1. A dive in icy Lake Superior to catch a sea lamprey is not for the faint of heart.  Please leave this to the professionals.
  2. Billy Cooper is not a shapeshifter, nor does he have x-ray vision or invisibility.  Instead, he's super smart.
  3. Having trouble getting legislation passed in Congress?  No problem for Sooper Yooper.  He must have some mighty good lobbying skills.
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Environment
5:19 pm
Fri December 3, 2010

Congress bans an Asian carp that is already here

They're banned, but they're already here. Current distribution of the Bighead Carp in the U.S.
USGS

Update December 3rd 5:13 pm:

Marc Gaden of the Great Lakes Fishery Commission says "as far as I know, no one thinks there are any Asian Carp in Lake Erie." He says Lake Erie is colored red in the USGS map above because two Bighead carp were found in commercial fishman's nets several years ago. They colored the entire Lake red based on these two incidents.

December 1st 5:27 pm:

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Have Vines, Will Travel
10:30 am
Tue October 19, 2010

The Kudzu of the North

If you've ever lived in the south, you know kudzu. It's an invasive plant that grows like crazy. Covers highway signs and telephone poles and anything that doesn't run fast enough.

There's a plant in Michigan that's getting a little crazy too. It's not kudzu-crazy yet, but experts say we need to get a handle on it.

It has a memorable name: dog-strangling vine.

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Pigs in our space
11:41 am
Wed September 22, 2010

This little piggy went wild

The Wild Boar is an ancestor of the domestic pig. They're not native to the U.S.
Photo by Richard Bartz Creative Commons

Peter Payette from Interlochen Public Radio filed a report on wild pigs with the Environment Report this week.

Pigs and boars can escape from farms and game ranches and cause problems in an ecosystem. The problem is especially bad in southern states.

Check out this video about the problem in Texas:

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Environment
11:03 am
Fri August 27, 2010

Throwing money at the Asian Carp problem

Asian Carp caught in Lake Calumet. The first one caught in the Great Lakes system.
USFWS

The Associated Press reports that The Charles Stewart Mott Foundation is giving $500,000 to the Great Lakes Commission to help it find ways to stop the invasive Asian carp from entering the Great Lakes.

The fish started make their way up the Mississippi River system more than ten years ago after they escaped from fish farm ponds in the south. They were imported to control parasites in the ponds. 

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