invasive species


According to the BBC, a sea-lamprey pie made for the monarchs in England by chefs in the city of Gloucester was a Christmas tradition that dated back to the Middle Ages.

The custom stalled in the 19th century, but has been revived of late for special occasions.

This year, Gloucester chefs plan to cook up a lamprey pie for Queen Elizabeth II for her Diamond Jubilee in June - marking 60 years of her reign.

And this time around, the lampreys in the pie will come from the Great Lakes.

The Detroit Free Press reports the Great Lakes Fishery Commission's Marc Gaden will gladly make an official delivery of the lampreys while vacationing in England this May.

Here, the lampreys are an invasive species that continue to threaten the sport fishing industry. But that's not the case in England:

Although lamprey used to be abundant in the Severn River near Gloucester, the creatures are now endangered and protected.

"It would be like us making a pie out of piping plover," an endangered shorebird in Michigan, Gaden said.

Gaden already has shipped 2 pounds of slimy Lake Huron lamprey, frozen, to Gloucester, but he is vacationing in England and will put on a tie and officially present the fish to the mayor May 4.

The Free Press reports chefs will consult an old recipe for the occasion:

One traditional 15th-Century recipe calls for the creature to be cooked in a sauce of wine, vinegar, cinnamon and its own blood, then baked in a tall crust...

[Marc]Gaden said he doesn't plan to eat any.

The BBC and the Free Press both report that no one can predict whether the Queen will partake in a piece of lamprey pie, or simply quietly admire it.

The BBC has a video about the Gloucester tradition of lamprey pie baking.

For more on how the sea lamprey snuck into the Lakes, check out "The Earliest Invader," a piece David Sommerstein did for the Environment Report's Ten Threats to the Great Lakes series.

Asian carp leaping out of a river.

Last month, we spoke with Michigan Senator Debbie Stabenow (D) about plans about a permanent solution for keeping Asian Carp out of the Great Lakes.

“The Army Corps of Engineers is working on a plan to give us specific recommendations on how to separate the waters… The problem is they say they won’t have this done until 2015. And, so, what we’re trying to do is push them to get this done much quicker,” Stabenow explains.

Now, we hear about legislation introduced in Congress by Senator Stabenow and U.S. Rep. Dave Camp to get the U.S. Army Corps of Engineers to speed up their analysis.

More from the Associated Press:

Legislation introduced in Congress would force the U.S. Army Corps of Engineers to speed up a study of how to prevent Asian carp and other invasive species from reaching the Great Lakes.

The corps has identified 18 locations where fish and other organisms could migrate between the lakes and other watersheds, including an artificial linkage between Lake Michigan and the Mississippi River basin in the Chicago area.

Corps officials say they'll release their recommendations by late 2015.

Michigan's U.S. Sen. Debbie Stabenow and U.S. Rep. Dave Camp say that isn't soon enough. They're sponsoring bills to require the corps to submit a progress report within 90 days of the legislation's enactment and a full plan within 18 months.

Scientists say Asian carp could starve out native Great Lakes fish.

Photo courtesy of the Great Lakes NOBOB Team

Ships entering the Great Lakes can carry water from foreign ports. That water is held in their ballast tanks. It helps stabilize the ship.

Now, anytime you hear the term ballast water... do your eyes glaze over? Maybe you start thinking about what you’re going to make for dinner? Okay, so it’s not the sexiest topic. But it matters because sneaky little invasive species can hide in the ballast water... and catch a ride across the ocean.

“Invasive species, scientists think, are the worst problem facing the Great Lakes. They threaten the Great Lakes health, they threaten to crash the ecosystem, they threaten our economy.”

That’s Andy Buchsbaum. He directs the Great Lakes office of the National Wildlife Federation. He says when ships dump their ballast water in the Great Lakes, the invaders can get out.

“And if they find each other and fall in love, you have families of those critters and you actually have some real population problems like zebra mussels going wild in the Great Lakes.”

Zebra mussels have caused all kinds of havoc with Great Lakes ecosystems. The Environmental Protection Agency estimates 30 percent of the invasive species in the Great Lakes have come in through ballast water.

Captive Russian boars
Peter Payette

The Michigan Department of Natural Resources has filed its first legal action under an order that outlaws some breeds of exotic swine.

The Michigan DNR has filed a legal action in Cheboygan County against the Renegade Ranch Hunting Preserve for refusing entry to state inspectors and harboring prohibited breeds.

This is the first legal action taken by the Michigan DNR since the state started enforcing the order on April 1.

*Correction - An earlier version of this story incorrectly stated that the Michigan DNR is banning "some species of exotic swine." The MDNR is banning certain breeds not species.  It has been corrected above.

Update 5:20 p.m.

A Michigan Court of Appeal ruling today upholds a ban on exotic swine breeds. It was adopted in an effort to halt the spread of feral swine that are tearing up farms and woodlands.

Opponents of the state’s new ban on about 130 swine breeds said they are not giving up their fight as April 1 approaches.

That’s when the state Department of Natural Resources and Environment will start to enforce the ban.

Scott Everett represents breeders and hunting ranches that are regulated by the order. He predicted there will be unintended consequences once it takes effect.

“The DNR is using the invasive species act to define certain animals that are invasive species and you can’t just say it’s only those animals that are on the hunting preserve operations – it’s all the swine that the DNR  thinks are invasive species," said Everett.

He said it will also affect hundreds of boutique farms in Michigan that raise animals for specialty meats for high-end restaurants.

There are still other legal actions pending challenging how the order will be enforced, and whether the state is illegally seizing property.

10:10 a.m.

The Michigan Court of Appeals has upheld the order that outlaws raising and possessing some breeds of exotic swine.

Hunting ranch operators and breeders challenged the order by the state Department of Natural Resources and Environment.

The state will start enforcing the ban in less than a month.

The photo above shows a knotweed stand getting out of control in the Upper Peninsula/Photo by Vern Stephens.

Vern Stephens and Sue Tangora work for the Michigan Department of Natural Resources. They happen to be married to each other. And they have a common enemy.

“This is on my radar of being a 10 on a scale of one out of 10.”

That thing they hate? It’s a plant. An invasive plant called Japanese knotweed. It’s sometimes also called Mexican bamboo. I met up with Vern and Sue at a busy intersection in East Lansing... on a corner lot where Japanese knotweed is going hog wild.

“It looks like bamboo. It gets up to 10-12 feet tall. It’s like being in a jungle, the canopy is above your head, generally in a lot of the sites, you can’t touch the canopy it’s that high above you.”

Maybe you’re thinking... so what? It’s a plant. In fact, it’s been a popular landscape plant in Michigan for years. People like it because it grows fast, so you can use it as a privacy screen to keep out nosy neighbors.

But this plant is crafty. It’s native to Japan, where it’s one of the first plants that comes up after a volcanic eruption. So it can actually push through volcanic rock. The problem with that is... it can also break through the foundation of your home.

“We know in England, Japanese knotweed has been known to be a problem there and it’s to the point where people have trouble getting insurance for homes, some of their insurance rates are really inflated. You see pictures of it growing up a wall inside someone’s home.”

(One couple in the UK had to demolish their home after a knotweed invasion - you can read that article here)

And actually – the knotweed on this corner lot is already breaking through the sidewalk.


This post has been updated with more details and comments from AG's office. 

Shipping locks in Chicago-area waterways will not be closed while a lawsuit over how to keep Asian Carp out of the Great Lakes is pending. The U.S. Supreme Court ruled against the injunction Monday.

Jim Bahn / Flickr

The Associated Press Reports: New York State will not be imposing stricter regulations on ships potentially carrying invasive species into the Great Lakes.

In the past, ships carrying ballast water for stability have brought invasive species including quagga mussels, spiny water fleas and round gobys to the Great Lakes from Europe.

New York State controls access to the St. Lawrence Waterway, which is the gateway to the Great Lakes.

U.S. Coast Guard

TRAVERSE CITY, Mich. (AP) - The Obama administration plans to spend $51.5 million this year in its continuing battle to protect the Great Lakes from destructive Asian carp.

Federal officials announced their carp strategy for 2012 on Thursday. It includes first-time water sampling to determine whether bighead and silver carp have reached vulnerable sections of Lakes Michigan, Erie and Huron.

Other planned measures include stepped-up netting and trapping of Asian carp in the Illinois River. Also high-tech monitoring to determine if an electric barrier near Chicago is adequately blocking the carp's path to Lake Michigan.

Authorities also plan field tests of an acoustic underwater gun that could scare carp away and pheromones to lure them to places where they could be captured.

David Sommerstein / The Environment Report

TRAVERSE CITY, Mich. (AP) - Environmental groups say they may renew a legal battle if the federal government doesn't toughen proposed regulations of ship ballast water that has brought invasive species such as zebra mussels to the Great Lakes.

Groups have gone to court twice to force the U.S. Environmental Protection Agency to crack down on ballast water disposal. The agency now requires ships to exchange the water at sea. In November, EPA proposed requiring vessels to install equipment that would kill at least some organisms remaining in the tanks.

The rule is based on an international standard that shippers say is the best they can do with existing technology.

But environmental groups said Tuesday the rules aren't strong enough to prevent more species invasions and they may sue again unless EPA toughens them.

Rebecca Williams / Michigan Radio

Asian carp have been making their way up the Mississippi and Illinois Rivers toward the Great Lakes for decades. Bighead and silver carp are the species people are the most concerned about.

There’s been a lot of focus on keeping carp out of Lake Michigan.

But a new study finds carp might do well in Lake Erie and some of the rivers that feed the lake.

Patrick Kocovsky is a research fishery biologist with the U.S. Geological Survey. He says it’s believed Asian carp need specific conditions to make babies.

“What’s currently believed is Asian carp require some kind of flood event in a tributary.”

He says the carp need just the right temperature... a river that’s flowing fast enough and a stretch of river long enough to reproduce.

Kocovsky and his team studied the major tributaries of Lake Erie. They found that the Maumee River is highly suitable for Asian carp to lay eggs.

The researchers found the Sandusky and Grand Rivers to be moderately suitable for carp.

Patrick Kocovsky says if carp can get into Lake Erie, the western side of the lake is likely to be the most hospitable.


Michigan’s fight to control invasive species in the Great Lakes could be weakened by a bill passed by the U.S. House this week.

Michigan put a ballast water law into effect in 2007 to keep ships from releasing new invasive species into the Great Lakes.

But the standard would be lowered by a Coast Guard funding bill that’s on its way to the U.S. Senate.

Patty Birkholz is director of Michigan’s Office of the Great Lakes. She says the U.S. Army Corps of Engineers and the U.S. Coast Guard had plenty of time to come up with recommendations, but failed to do so.

Now, Birkholz  says, Michigan has the most to lose.

"We know the dangers that we're under with invasive species, both from water and land, and we have to protect ourselves even if the federal government won't standup to the invasive threat out there," Birkholz says.

Birkholz says no new invasive species have been found since Michigan tightened its ballast water standards.

The U.S. House bill also allows the SS Badger car ferry in Ludington to continue dumping coal ash into Lake Michigan. The operator says it can’t yet afford to convert to natural gas.

The U.S. House has approved a bill that would set a national policy for cleansing ship ballast water to kill invasive species while prohibiting states from imposing tougher requirements.

The measure that passed the Republican-controlled chamber Tuesday would adopt an international standard limiting the number of live organisms in ballast water. Vessel operators would have to install technology to comply.

The shipping industry says an existing patchwork of more than two dozen state and tribal policies is unworkable because vessels move constantly from one jurisdiction to another. New York rules scheduled to take effect in 2013 would be 100 times tougher than the House standards.

Environmentalists say the House measure isn't strong enough to prevent more invasive species from reaching the Great Lakes. They say they hope to derail it in the Democratic-controlled Senate.

US Supreme Court

Five Great Lakes states are waiting to find out if the U.S. Supreme Court will hear their case calling for more decisive measures to keep Asian carp from reaching the Great Lakes.

Michigan, Wisconsin, Ohio, Minnesota, and Pennsylvania filed the request this week.

The states want the U.S. Army Corps of Engineers to quickly wrap up its study of how to keep Asian carp from escaping the Mississippi River system through Chicago-area shipping canals. The corps is one of the main agencies responsible for the locks.

John Sellek is the spokesman for Michigan Attorney General Bill Schuette.

“What we really want is to have the Army Corps of Engineers speed up their study,” said Sellek.

“They are taking up to five years or longer to look at this and every minute that goes by could be another fish that’s getting through those canals in Chicago, so what we’re requesting is they speed that up to 18 months at the longest.”

The Great Lakes states also want the high court to order the corps to string nets across smaller waterways that could be escape points for the carp.

At the same time, Michigan and 17 states along the Great Lakes or the Mississippi want a total physical separation of the water systems.

user rkramer62 / Flickr

An invasive insect may wipe out the ash trees at Sleeping Bear Dunes National Lakeshore. The emerald ash borer has infested up to 90 percent of the ash trees on the lakeshore's mainland in the northwestern Lower Peninsula. The first case was discovered in June and the tree-killing pest has spread quickly.

Lakeshore officials are considering their options to try to control the ash borer, but things look bleak.

Photo by Lester Graham

We've been spending the past couple months going on fishing trips, and talking to people who fish for fun and for a living... to bring you stories about everything you never knew you wanted to know about fish and fishing in the Great Lakes.

Today, you can hear the result of our effort in a special one-hour documentary we're calling Swimming Upstream.

We'll tag along on a salmon fishing trip with Lester Graham, go on an Asian carp rodeo on the Illinois River, meet commercial fishers (both tribal and non-tribal), and go fishing with Dustin Dwyer as he gets into the mind of a fish.

We think of the Lakes today as a great place to play on the beach, to swim, to go fishing. But those huge, beautiful lakes are changing.

The changes are happening so fast that the agencies which manage fishing cannot keep up with them.

On average, a new foreign species gets into the Lakes every seven months. Each could be a threat to the lakes and the fish in the lakes. We explore the health and future of the Great Lakes, and hear stories about fish and the people who catch them.

Listen to it here:

Or tune in today at 1pm and 8pm on Michigan Radio to hear Swimming Upstream and let us know what you think.

Find out more about fish consumption advisories: in Michigan,  in Ohio, in Wisconsin, in New York, and in Illinois.

A federal appeals panel has rejected a request by five Great Lakes states for an immediate order to close shipping locks on Chicago-area waterways and take other steps to prevent Asian carp from invading Lake Michigan. 

The three-judge panel of the 7th U.S. Circuit Court of Appeals ruled Wednesday against the request by Michigan, Minnesota, Ohio, Pennsylvania and Wisconsin.  The states were appealing a decision by a federal district judge in Chicago last December. 

James Marvin Phelps / Flickr

Invasive species introduced into the Great Lakes by the shipping industry have caused enormous economic and ecological damage. Some estimates put the costs of invasive species in the Great Lakes at billions of dollars annually.

Quagga mussels, round gobies, and spiny waterfleas have spread all over the place in the Great Lakes, disrupting the food chain.

The question is, how do you get rid of these critters that can hide in the nooks and crannies of a ship's ballast tanks?

The critters get in when a ship pumps in ballast water in an overseas port. They hitch a ride across the Atlantic or Pacific and get dumped in U.S. waters.

Today the EPA requires ships to "swish and spit" before entering U.S. ports. That means international ships have to flush out their ballast tanks with salt water from the open ocean before coming in.

It's a sanitizing method that several states and environmental groups say is inadequate, and they're pushing the EPA to do more. But nobody knows what kinds of ballast water treatment systems will work AND will be cost-effective to shipping companies.

The Duluth News Tribune has a story today about an effort that is thought to be the first "major-scale test on the Great Lakes" of a ballast water treatment system.

It's being tested on a 1,000 ft. Great Lakes freighter. Freighters that stay in the Great Lakes don't bring the invasive species in, but they can help spread invasives from port to port around the region.

They Tribune reports the researchers treated 1.8 million gallons of ballast water in the ship with lye - a caustic chemical often used as an industrial cleaning agent. Before the ship reached it's destination port, they neutralized the treated water with carbon dioxide before releasing it.

One of the biggest challenges in combating invasive species in ballast tanks, is how best to sanitize such a large amount of water sitting in the complex maze of a ship's hull:

“The good news is that we were successful in delivering the biocide at this huge level for a 1,000-foot laker, then successfully delivered the neutralizer, all while the Indiana Harbor was on the job,” Phyllis Green, superintendent of Isle Royale National Park and the instigator behind the effort, told the News Tribune.

The Tribune reports that research into the real-world test is ongoing. Water samples from the ballast tanks will show whether the lye killed organisms "and whether the treated water was then successfully neutralized to prevent environmental harm."

Results of these tests should be available next month, the paper reports.

(courtesy of the Illins Department of Natural Resources)

State and federal wildlife officials say their latest search has turned up no Asian carp swimming in an Illinois lake close to Lake Michigan, though they admit they can’t say there are no carp in the lake. 

“We’re saying if there are fish there…they’re there in very low abundances," says Kevin Irons,  the head of the state of Illinois’ office of Nuisance Aquatic Life.   He says no Asian carp were found during a recent four day search of Lake Calumet.   Carp DNA was found in the lake recently.  


There is new evidence that Asian carp may have slipped past electric barriers in Chicago-area waterways. The barriers are meant to keep the fish from reaching the Great Lakes.

The news has launched a new wave of arguments over the threat posed by the invasive species.

The Army Corps of Engineers turned up nine positive tests for Asian carp DNA out of hundreds taken from Chicago-area waterways.

Federal officials say that’s not proof the invasive species is getting closer to Lake Michigan, or that it poses an imminent threat of infesting the Great Lakes.

The state of Michigan is suing the federal government to get the shipping locks shut down as an emergency precaution.

John Sellek is with the Michigan Attorney General’s office. He says there is a growing body of evidence that the threat exists.

“How many more warnings do we need at this point that that impending tragedy is coming? The time for studying is over. It’s time to take action.”

The state is appealing a judge’s refusal to close the Chicago shipping locks while the Army studies ways to permanently ensure Asian carp don’t become a Great Lakes problem.


Scientists have been testing the water in the channels and rivers above an electric barrier desiged to keep Asian carp out of the Great Lakes.

They've found DNA evidence of the carp in Lake Calumet in the past. Now they've found more.

From the Associated Press:

Scientists have turned up more genetic evidence of Asian carp above an electric barrier designed to keep them from invading the Great Lakes.

The U.S. Army Corps of Engineers this week reported that nine water samples taken in May and June from Chicago-area waterways contained DNA from silver carp, one of two Asian species threatening to enter the lakes after migrating northward in the Mississippi River and its tributaries.

Hundreds of other samples had no carp DNA. But environmentalists say the latest findings show the electric barrier isn't enough to protect the Great Lakes. They want to sever the link between the lakes and the Mississippi basin near Chicago.

The federal government's Asian carp program coordinator said Thursday there's no evidence the fish are getting through the barrier.

DNA evidence can be a sign that Asian carp are in the water, but not necessarily so. It could just be that Asian carp scales or mucus are in suspension in the water column in that area.

Though one researcher with the U.S. Geological Survey says you're much more likely to find the DNA evidence before you find any fish:

"These fish are remarkably cryptic. They are very sensitive to nets and boats. They are not caught by accident by guys with rods and reels."

By the time Asian carp make themselves known, they tend to be breeding and well-established, he said.

"It's typical for a species to putter along at a barely noticeable level for several generations... but when you get the density high enough, you are definitely going to start noticing them."

(photo by Peter Payette) / (courtesy of the Environment Report)

On July 8th, the Department of Natural Resources will follow through with a designation that wild hogs are an invasive species.    There are several thousand feral pigs believed to be running wild in Michigan, according to  Mary Detloff, a spokeswoman for the Michigan Department of Natural Resources.  

Jerde et al.

The Great Lakes and the Mississippi River basin are connected, but it's an artificial connection.

Around the turn of the last century canals and channels were dug that reversed the flow of water.

Waters that used to flow into Lake Michigan now flow into the Des Plaines River and eventually into the Mississippi.

The reversal was a way of separating Chicago's sewage from its drinking water supply.

And with more than 2 billion gallons of water a day flowing out of Lake Michigan, it's the largest diversion of Great Lakes water.

Undoing what was done around a hundred years ago has been considered crazy talk because of the expense involved, but some scientists are now embracing that idea.

In a new paper released in the Journal of Great Lakes Research, four lead scientists (Jerry Rasmussen, Henry Regier, Richard Sparks, and William Taylor) argue that the costs of permanent separation of the Great Lakes and Mississippi River Basin are worth it.

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.

Brown marmorated stink bug.
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 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.

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.

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.

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.

(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.

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: