Invasive Species or Delectable Green?

  • Garlic mustard looks like any average weed, but because it's an exotic species in the Midwest, it doesn't have any natural predators. That means it can push out native plant species and disrupt ecosystems in Great Lakes states. (Photo by Corbin Sullivan)

Of all the non-native plants and animals that have invaded the Great Lakes region, garlic mustard is one of the most prolific. The leafy green plant is an invasive species that can be found in people’s backyards, in wetlands, even growing through cracks in concrete. Invasive species can hurt natural areas by displacing native plants. So to get rid of garlic mustard, people are dumping it in landfills or killing it with herbicide. But a nature group in Michigan has found a better way to deal with it – by eating it. The Great Lakes Radio Consortium’s Erin Toner attended a benefit dinner where garlic mustard was featured in every single recipe. Toner produced this audio postcard:

Transcript

Of all the non-native plants and animals that have invaded the
Great Lakes region, garlic mustard is one of the most prolific. The
leafy green plant is an invasive species that can be found in people’s
backyards, in wetlands, even growing through cracks in concrete.
Invasive species can hurt natural areas by displacing native plants.
So to get rid of garlic mustard, people are dumping it in landfills or
killing it with herbicide. But a nature group in Michigan has found
a better way to deal with it – by eating it. The Great Lakes Radio
Consortium’s Erin Toner attended a benefit dinner where garlic mustard
was featured in every single recipe. Toner produced this audio postcard:


“Hi, I’m Jeremy Emmi. I’m the executive director of the Michigan Nature Association. There are a lot of invasive species out there that people don’t know about. Most people have invasive species in their backyard or their woodlot or their farm and they really don’t know they’re there. Garlic mustard is actually pretty simple to deal with, although very labor intensive.


“And the way we deal with it is pulling it, and that’s really the best way. You can use herbicide, but because it grows in such pristine habitats a lot of the time you don’t want to use herbicide because you don’t want to kill the native plants that are around it. So you’re in a catch 22. So really the best way is just to pull it.”


“Hi, I’m Natalie Kent. I’m the GIS technician and development associate for the Michigan Nature Association. I was helping out at one of MNA’s workdays and we were removing garlic mustard and I was working with my coworker Sherri. And we were coming back home and we were talking and she said she had had garlic mustard in salad the weekend before. And I said “Oh, you can eat it.” And she said “Oh yeah, it’s edible, you can have it fresh in salads, you can cook it like spinach.” And then the first thought that popped into my head was, if we can eat it, why are we throwing it away?


“…It looks different, depending on when you see it. In early spring, it’s in the form of a basil rosette and it sort of looks similar to a violet leaf, similar in the shape. But to me, I always tell people it looks like Pac Man.”


“My name is Ruth and I am eating something called Jade Soup, which I think is essentially a broth with lots of boiled garlic mustard leaves in it and actually it’s very good. It kind of tastes like a spinach soup, kind of, but it tastes good and mild and not at all overwhelming which you might think it would be. And also the garlic pesto bread is absolutely fabulous.”


“I’m Cynthia and I was born in Detroit, Michigan. Oh, I think it’s great. It has a slight zing and zip to it. It’s refreshing. It’s the kind of thing that would cleanse the palette after a heavy meal. It’s really an enjoyable plant.”


I’m Clifford Welch, and I’m a retired professor at Michigan State University and my retirement’s devoted to ecological restoration. I spend now almost 70 percent of my time on invasive species. The invasive vegetation is a huge, huge problem. What I have is a bunch of dishes that have garlic mustard in it. This is what I really need to taste, here’s the garlic mustard right here, and I’ve never eaten it before and I’m anxious to see what this tastes like.


(sound of chewing)


“It has a mustardy taste to it. It needs something on it, though, badly.”


“I’m Mary, and I was about to try – this is a cheese ball with garlic mustard. It’s actually good, it adds a, I don’t want to say peppery flavor, but I guess a garlic flavor to the cheese. It is good. So if somebody’s willing to take the time to harvest it, you can add it to things and I guess it’s supposed to be really healthy based on the literature. It has a lot of Vitamin A and Vitamin C in it. We’re all trying to eat healthier these days.”


HOST TAG: The voices of people trying foods made with mustard garlic: an invasive species that naturalists are removing from the wild and eating, rather than throwing it away. Our audio postcard was produced by the GLRC’s Erin Toner.

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The Challenge of Managing Fragmented Forests

In the Great Lakes states, many of the original forests were cut down. They were cleared for homesteading, farming, and for the wood that fueled the age of steam. But over the past several decades, some of the forests have been growing back. Many of the new forests are confined to small patches or woodlots surrounded by farm fields. These woodlots are small havens for animals. But some foresters, biologists, and environmental groups are concerned that those forests are simply too small and too fragmented. The Great Lakes Radio Consortium’s Cristina Rumbaitis-del Rio prepared this report:

Transcript

In the Great Lakes States, many of the original forests were cut down. They were cleared for
homesteading, farming, and for the wood that fueled the age of steam. But over the past several
decades, some of the forests have been growing back. Many of the new forests are confined to
small patches or woodlots surrounded by farm fields. These woodlots are small havens for many
animals. But some foresters, biologists, and environmental groups are concerned that those
forests are simply too small and too fragmented. The Great Lakes Radio Consortium’s Cristina
Rumbaitis(rum-bite-us)-del rio (del-rhee-o) prepared this report:


(Natural sounds – walking through leaves underneath) & Thomas Grubb talking:
“This little woodlot is large enough to house one pair of downy woodpeckers and one pair of
white breasted nuthatches.”


Thomas Grubb is a Biology Professor at Ohio State University. Instead of lecturing to a classroom
today, he’s strolling through a small, private woodlot next to a cornfield in central Ohio. This is
one of the study sites where he looks at how forest fragmentation affects woodland bird species.


He says just as in many areas of the Midwest, Ohio’s forests are highly fragmented because
instead of having the forest concentrated in one big area, the forests are carved up into small
patches, scattered throughout a largely agricultural landscape. While 90% of Ohio was covered
with forest before European settlement, now less than a third of the state is considered forested.
And according to Grubb, this part of Ohio has even less forest.


“This plot is about 3% forested and that’s not much forest. This landscape is probably as little
forested as any you’re likely to find.”


Grubb and his students are working with woodlot owners to see if the size of a woodlot affects
the number of birds living there and their survival. He says bird survival is better in larger
woodlots than in smaller ones.


“One of the things we think is happening in these small woodlots, these permanent resident birds
that are there all winter- they can’t get out of the wind, and so they have tremendously high
metabolic rates trying to stay warm.”


Smaller woodlots may be colder than larger ones because there’s fewer trees to block the wind.
Smaller woodlots also have less food for birds, and in the winter birds may starve trying to get
enough food to stay warm.


(Natural sounds of leaves and birds)


“Oh that’s a Carolina Wren.”


Forestry officials, scientists, and environmental groups agree forest fragmentation is one of the
most serious problems facing Ohio’s forests. Fragmentation is a problem for a number of reasons
beyond the fact that it represents a loss of forest habitat. According to Ohio State University
Ecologist, Ralph Boerner, the smaller a forest patch is, the fewer number of species that can live
there.


“The smaller a forest patch, the less diverse it is. And you particularly lose species that need
large areas in which to gather food.”


Boerner says smaller patches may also have a harder time recovering from disturbances – like an
insect outbreak or a tornado.


“We also believe there is a link between how diverse an ecosystem is and how stable it is in the face of disturbnace, so when you lose diversity there’s the potential to lose stability, lose the ability to bounce back
from disturbance.”


Breaking up the forest into patches also isolates animal and bird species that can’t or won’t cross
agricultural fields to get from one forest patch to another, and that means less genetic diversity
because they can’t mate with animals outside of their forest patch. So some woodlots are just too
small for certain species to survive.


Fragmentation also makes managing forest land more difficult. Most of Ohio’s forested land is
privately owned. Ohio Division of Forestry official, Tom Berger, says this makes managing
almost an impossible task.


Well, you’ll have 10 people and they’ll have 10 different views on how to manage it or what’s
valuable to them and they all have that right.”


Division of Forestry officials can give landowners advice, but they can’t tell a landowner what
their priorities should be. Berger says this often means neighboring patches of forest are managed
for completely different interests. Berger wishes he had more tools at his disposal to get land
owners to manage their land collectively.


“I wish we could put together some programs or some incentives, monies available through the
state or federal government that would really encourage landowners to work together to form
blocks or units that would be managed in the same way.”


Managing isn’t the only challenge. Berger says keeping the land at least partially forested is
becoming a problem as people choose to build homes in woodlots, particularly in areas near
cities.


“Not only is the woods scattered that we have fragmented, but a lot of them continue to
disappear too, especially in the urbanized areas in Columbus and around the state.”


Ohio State University Biologist, Thomas Grubb, says there are may reasons for protecting
woodlots, but his favorite reason is because it’s a pocket of nature in a sea of developed land.


“This is worth preserving just because it’s like it is and we ought to just leave it alone. This enriches our lives.”


The average woodlot size in Ohio is 20 acres, and it changes hands frequently – every seven years on average. The small size and the quick turnover make it nearly impossible for the state to
encourage owners to establish any kind of useful management practices. That means there’s little
to be done to help keep the forests from further deterioration.


For the Great Lakes Radio Consortium, I’m Cristina Rumbaitis-del Rio.

Struggling Farmers Turn to Logging

In some states in the Great Lakes region, it’s been a bad year for fruit trees. Some orchard owners are facing a devastating year. They’re trying to find some other source to bring in some money. One way farmers are choosing might hurt the environment and future income for the farmers. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

In some states in the Great Lakes region, it’s been a bad year for fruit
trees. Some orchard owners are facing a devastating year. They’re
trying to find some other source to bring in some money. One way
farmers are choosing might hurt the environment and future income
for the farmers. The Great Lakes Radio Consortium’s Lester Graham
reports:


Tart cherries are legendary in northwestern Michigan. There are cherry
festivals, cherry streets, and even some of the businesses are named in
honor of the surrounding cherry orchards.


But this year, the tart cherry crop was nearly wiped out.


(sounds of coffee shop)


On a recent Sunday morning at Barb’s Bakery in Northport, Michigan
the locals and the tourists gather for coffee and pastry. Paul Scott is
having a cup of coffee and looking through the newspaper. He’s a cherry
farmer who lives on the peninsula between Lake Michigan and Grand
Traverse Bay. He explains what happened this year to the cherry
trees…


“In early April, we had four or five days of exceptionally warm
weather. It got into the mid-80s and it pushed the vegetative growth of
the trees way past of where they should have been for that time of the
year. Subsequently, we had two devastating freezes, back-to-back, two
nights in a row.”


Compared to last year’s bumper crop, the tart cherry trees will only
produce about three-percent of the crop. Sweet cherry trees will do a
little better… with about 15 to 25-percent of the crop surviving. Scott
says farmers who still have to make their farm payments and survive
are looking for other ways to bring in some cash…

“And,
the first thing that — in a year like this — what your people do
is go look for an opportunity to sell timber if they really are jammed
and they have to have something, that’s what they’ll do.”


(truck sounds)


That’s exactly what Jim Von Holt thought about doing. Von Holt is a
fourth generation cherry farmer. As we drive on the bumpy dirt road
through his orchard, it’s hard to find a single cherry on the trees. We’re
headed to a 20-acre stand of timber, a small hardwood forest at the
back of his property…


“Maple’s predominant. Ash would be second. There’s
some cherry, beech, and a little poplin here. The maple’s what’s worth
the most.”


Von Holt says the trees here are high quality hardwoods. That could
mean some pretty good money…


“This year with absolutely, essentially no crop to sell, if
you wanted to bring the money in, this would be a good year to bring the
money in. So, yeah, it’s a money issue. I’ve always kind of looked at this
up here on this particular farm as this is just a little bit of an ace in the
hole. If times get tough — and times are tough — or get as bad as they are
this year, this was something we could come into and say ‘Now is the
time to go ahead and do this.'”


Von Holt hired a forester to help him determine which trees should be
cut now and which ones should be left standing to continue growing for
a future harvest and future income. The longer they grow, the more
valuable the trees can become.


Not everyone turns to a forester to help. The cherry farmers sometimes
just let the timber-buyer decide.


Rick Moore is the forester for the Grand Traverse and Leelanau
Conservation District. He says he encourages landowners to at least get
bids from more than one timber-buyer before agreeing to allow logging.


“Right now there are timber buyers who aware of the plight of
the cherry farmer. And there are people up here who are not so
reputable who are knocking on doors.”


And Moore says some of those loggers will take every tree that can be
harvested… especially the good maples… even if those trees should be
left standing for future harvests years down the road.


On top of that… timber-buyers are giving farmers much less for their
hardwood timber right now. Some hardwood prices have dropped to
nearly half of what they were just a few months ago. Timber buyers who
are cutting and buying trees now and then hold them until prices
rebound, could make a lot of money and leave the farmers with a lot
less income.


Jim Von Holt says that’s why he’s not cutting right now. By using a
forester to help ensure his timber stand will be around for future
selective cuts… he’s thinking about long-term income and the health of
the forest…


“So it has to be handled right. And, I’ve just watched too
many people, too many landowners in the area really take a bath on
letting just a logger come in and say ‘Hey, you know you need to cut this
place. All the 18-inch lumber needs to come out of here.’ And that’s
wrong. That’s just wrong.”


But, some of his neighbors are more worried about getting some quick
cash in a year when the tart cherry crop won’t bring in any money.
Some cherry farmers feel they just don’t have a choice.


For the Great Lakes Radio Consortium, this is Lester Graham.