The quest for a perfectly manIcured lawn has driven some lawn care companies to create a grass resistant to weed killer. Some worry, however, that they've created an invasive species. (Photo by Philipp Pilz)
An environmental watchdog group is hoping to block federal approval of a new genetically modified type of grass. The group says the grass poses a threat to natural areas. The Great Lakes Radio Consortium’s Erin Toner reports:
Transcript
An environmental watchdog group is hoping to block fedral approval of a new genetically
modified type of grass. The group says the grass poses a threat to natural areas. The Great
Lakes Radio Consortium’s Erin Toner reports:
Two companies – Scotts and Monsanto – want the government’s approval to commercialize a type of
creeping bentgrass. The grass would mainly be planted on lawns and golf courses because it’s
resistant to Roundup, a popular weed killer. But critics of the bio-engineered grass say it
needs more testing. For one thing, they say, genes from the grass can spread and strengthen
non-native plants.
Joe Mendelson is with the International Center for Technology Assessment.
“The end result is you’re going to create a grass that is invasive, that will take over natural
areas like our grasslands and or forest areas, and we won’t be able to control it. That’s going
to have a very negative impact on a number of sensitive ecosystems.”
The U.S. Forest Service has also weighed in, saying the grass has the potential to have a
negative effect on all of the country’s grasslands and natural forests. Scotts has said the
bio-engineered grass poses no threat to natural areas.
For the Great Lakes Radio Consortium, I’m Erin Toner.
Scientists have known for years that streamside forests help stop certain pollutants from entering the waterway. But new research published in the Proceedings of the National Academy of Sciences shows that those forests have added benefits. The Great Lakes Radio Consortium’s Chris Lehman reports:
Transcript
Scientists have known for years that streamside forests help stop
certain pollutants from entering the waterway. But new research
published in the Proceedings of the National Academy of Sciences
shows that those forests have added benefits. The Great Lakes Radio
Consortium’s Chris Lehman reports:
Steams that flow through forests tend to be wider and slower than those
that flow through meadows or urban areas. Scientists say that creates
an environment that can actually help clean up a polluted waterway.
Bernard Sweeney is the director of the Stroud Water Research Center in
Pennsylvania. He says their research points to a direct relationship
between woods and water.
“You put a forest along a small stream, it creates a more natural and
wider stream channel; that in turn provides more habitat, more
available ecosystem which in turn enables a stream to do more work for
us like processing nitrogen and organic matter.”
Sweeney says government programs that offer incentives to create
natural streamside buffers should do more to specifically encourage
reforestation. He says grass buffers don’t have the same cleansing
effect on waterways.
For the Great Lakes Radio Consortium, I’m Chris Lehman.
Although a well-manicured lawn offers certain benefits... not everyone thinks it's worth the effort. (Photo by Ed Herrmann)
Some people still prefer a more natural look. (Photo by Ed
Herrmann)
One of the great rituals in suburban America is mowing the lawn. A manicured lawn seems to say that the house is well cared for, that it belongs to the neighborhood. Great Lakes Radio Consortium commentator Ed Herrmann wonders whether this obsession for the perfect lawn is worth the effort:
Transcript
One of the great rituals in suburban America is mowing the lawn. A
manicured lawn seems to say that the house is well cared for, that it belongs
to the neighborhood. Great Lakes Radio Consortium commentator Ed
Herrmann wonders whether this obsession with the perfect lawn is worth the
effort:
(sound of evening insects)
It’s a late summer evening and at last I can go outside and enjoy the
sounds of the neighborhood. There’s a little breeze, the air is cooler. The
chorus of insects is soothing, gentle but insistent, an ancient throbbing
resonance. Much better than during the day…
(roar of lawn machines)
Summer days in the suburbs are the time of assault, when people attack their
lawns with powerful weapons from the chemical and manufacturing
industries. Anyone who uses the words “quiet” and “suburbs” in the same
sentence has never been to a suburb, at least not in summer.
It takes a lot of noise to maintain a lawn. Besides the mower, you’ve got edgers, trimmers,
leaf blowers, weed whackers, core aerators, little tractors, big tractors, slitting
machines. I don’t know whatever happened to rakes and hand clippers. One
thing’s for sure. This quest for lawn perfection wouldn’t be possible without
the industrial revolution.
(machines stop)
So where did we get the idea that a house should be surrounded by a field of
uniform grass kept at the same height?
Well, with apologies to the Queen, I’m afraid we must blame the British. It
seems that, along with our language, our imperial ambitions and our
ambivalent morals, America also gets its notion of what a lawn should look
like from the English. Of course, the estates of the English aristocracy were
tended by a staff of gardeners. England also has a milder climate, and the
grass that looks so nice there doesn’t do as well in North America. In the
1930’s the USDA came up with a blend of imported grasses that would
tolerate our climate. Since these grasses are not native, they need help, and
that calls for fertilizers, pesticides and lots of extra water. Since normal
people can’t afford gardeners who trim by hand, that means lawn machines.
American industry to the rescue.
(mower starts up, fades under next sentence)
A quick Google tells me that today we have 40 million lawn mowers in use.
Each emits 11 times the pollution of a new car, and lawn mowers contribute
five percent of the nation’s air pollution. Plus more than 70 million pounds of
pesticides are used each year and over half of our residential water is used
for landscaping. Don’t you love those automatic sprinklers that come on in the
rain? Add to that all the time that people spend mowing and edging. Of
course the two billion dollar lawn care industry is thrilled about all this
enthusiasm, but I gotta ask, “Is it worth it?”
Call me old fashioned, but I actually prefer the looks of a meadow with mixed
wildflowers and grasses to the lawn that looks like a pool table. My own lawn
is somewhere between. It’s mowed, but it’s what you might call multicultural.
There are at least five different kinds of grass with different colors and
thicknesses, plus clover, dandelions, mushrooms, a few pinecones, and a
rabbit hole or two. There’s also some kind of nasty weed with thorns, but even
that has nice purple flowers if it gets big enough.
Clover, by the way, used to be added to grass seed because it adds nitrogen to
the soil. Now we just buy a bag of nitrogen fertilizer, so who needs clover?
And what’s wrong with
dandelions? You can eat them, some people even make wine out of them,
they have happy yellow flowers; yet to most people they indicate your yard is
out of control. So I’m down on my hands and knees pulling dandelions. I’m
not sure why, but I hope it keeps the neighbors happy.
One thing I won’t give in to, though, is the chemical spraying trucks, painted
green of course, that roll through the neighborhood.
I can only hold my breath. (sound of trucks and mowers) Try not to listen. And
wait for the evening. (evening insects)
(air conditioner starts up)
Although, with all these air conditioners, even the night’s not too quiet.
But that’s another story.
Host tag: “Ed Herrmann is an outdoor enthusiast living in the
suburbs of Detroit.”
Reporter David Hammond's yard. He has the vague notion that not bagging grass clippings is more environmentally friendly. (Photo by David Hammond)
Most of Hammond's neighbors prefer to bag clippings, leaving a perfectly manicured turf. (Photo by David Hammond)
At one point or another, most of us have had to do yard work. If it was one of your chores as a kid, you probably developed a strong aversion to it, but as some of us get older, get married, and move to the suburbs, something interesting happens. Taking care of the yard becomes important, but is there an environmental impact? As part of an ongoing series, called “Your Choice; Your Planet,” the Great Lakes Radio Consortium’s David Hammond takes a closer look at his own back yard:
Transcript
At one point or another, most of us have had to do yard work. If it was one of your chores as a kid,
you probably developed a strong aversion to it. But as we get older, get married, and move to the
suburbs, something interesting happens. Taking care of the yard becomes important. But is there
an environmental impact? As part of an ongoing series, called “Your Choice; Your Planet,” the
Great Lakes Radio Consortium’s David Hammond examines his own backyard.
To bag or not to bag? That is the question. Well, at least that’s my question… on most Saturdays
say about 10am.
(lawnmower sound up far away distance)
That’s when the men of my neighborhood head outside for their weekly call to arms. It’s yard day.
And once the first mower starts, like fruit flies to a banana, everyone heads outside to do their
mowing, edging, and weeding. It’s a procession that lasts all weekend.
(lawnmower sound up close distance, up and under)
This is a new neighborhood… only a couple of years old. Everybody has put in new landscaping,
and everybody spends a lot of time taking care of their lawns. Brian Van Netta is one of my
neighbors.
“It’s the showpiece of the house. It’s the first thing that people see when they drive by and it sets the tone for the rest of the house.”
Around here, that means bagging your lawn clippings. You know the routine. Mow a couple of
strips across the yard. Stop the mower. Take the grass bag and dump it into the compost bag.
Put the grass bag back on the mower. Mow a couple more strips then dump again. Then repeat
all afternoon.
I think it’s lunacy… a waste of the weekend. Something keeping me from solving really important
issues like: Does my beer taste great or is it less filling? I’ve also have a vague notion that not
bagging is better environmentally, but I can’t back it up with facts. So I decide to investigate.
(lawnmower sound out)
First stop – Wade Martingdale. He’s a neighbor who’s worked in the landscape business. Around
here, his word carries weight. Unfortunately for me, he recommends bagging.
“If you have a real full turf grass, you know, real thick and full, that when you cut your grass, the
grass clippings are so thick that actually strangles out your grass, its doesn’t let the water get to the
roots, the air, and then what water does get to the roots, it won’t dry so it can promote disease.”
He also says bagging makes a yard look better… usually as he’s looking at my yard.
“You can’t really tell from a distance, but you can tell up close. Just like your grass has a lot of
clumps in it…” (pause… laughter)
I was getting worried. If bagging was really the best environmental and the best neighborly thing to
do, I might actually have to start. No sense getting kicked out of poker night on account of some
grass clippings, but as I looked down my street at all the 30-gallon bags waiting to be picked up, I wondered where all that waste was going.
(sound of trucks picking up waste – up and under)
Canton Waste Recycling handles all of the recycling pickups in my town. Each week, they pick up
yard waste from nearly 20,000 homes, and then haul it to a regional processing center. There it’s
turned into compost and sold to landscapers and fertilizer companies. The only caveat is that the
yard waste collected from the neighborhoods can’t have any debris in it. If there are stumps or
rocks or concrete in the compost bags, then an entire truckload can be wasted. When that
happens, it gets sent to the landfill.
(begin fading truck sound)
So assuming that folks in my neighborhood are not sneaking any dead cats into their yard waste…
bagging seems like a decent bet environmentally. Sure, there is energy used to pick up and
process the yard waste, but the program employs a dozen local people. I had to give it thumbs up.
(truck sound out)
But now, my worry had turned to panic. I could see the rest of my summer out in front of me. No
more pool. No more picnics. No more Sea Breezes at high tea. No, what I saw was a sweat-stained, fat guy lugging 30-gallon compost bags to the curb. That was going to be my summer.
Hell, it was going to be the rest of my summers.
My last hope was The Huron River Watershed Council. They’re a local environmental group and
have developed a lawn care tip sheet. As I read through it, I started to feel the ol’ fun quotient
starting to rise. That’s because the tip sheet recommended not bagging your clippings. That is, if
you mulched them well when you cut them. Laura Rubin is the Executive Director.
“By leaving them there, they are sort of leaching those nutrients right back into the soil. So when
you mulch them, and you leave them, they just naturally put those nutrients back into the ground
and that’s what the soil needs.”
Rubin says that those added nutrients would allow me to save money because I wouldn’t have to
buy as much fertilizer. I also wouldn’t have to buy the composting bags. Rubin added that she’s
not against community compost programs. Just that leaving the clippings was a simpler
alternative.
“Community-wide composting programs are great and if you have a good one, you can’t go wrong.
It’s just changing the waste stream to a different area, but I don’t want to stress that there’s sort of
a ‘good way’ and a ‘bad way.’ If you send it to a composting program, you are still recycling and composting
that up rather than bagging it, and sending it to the landfill is the worst.”
So in the great bagging debate, it seems that both sides can claim the environmental high ground.
As long as I mulch my lawn clippings well, I can continue not bagging in good conscience. And for
the hardy souls who do bag? You’re good too. In fact, next Saturday, as I watch you schlepping
all those bags to the curb, I’ll tip a glass to you.
For the Great Lakes Radio Consortium, I’m David Hammond.
Researchers are looking at ethanol from corn as an environmentally-friendly way to power fuel cells. However, some studies show corn-based ethanol takes more energy to produce than the fuel provides. (Photo by Lester Graham)
Researchers are looking at ways to use corn-based ethanol as a way to power hydrogen fuel cells. It would appear to be an environmentally friendly way to get into the hydrogen fuel economy. However, ethanol might not be as environmentally friendly as its proponents claim. Backed by the farm lobby and ag industries such as Archer Daniels Midland, ethanol has plenty of political support. But some researchers say corn-based ethanol is a boondoggle. The Great Lakes Radio Consortium’s Mary Stucky reports:
Transcript
Researchers are looking at ways to use corn-based ethanol as a way to power hydrogen fuel cells.
It would appear to be an environmentally friendly way to get into the hydrogen fuel economy.
However, ethanol might not be as environmentally friendly as its proponents claim. Back by the
farm lobby and ag industry such as Archer Daniels Midland, ethanol has plenty of political
support. But some researchers say corn-based ethanol is a boondoggle. The Great Lakes Radio
Consortium’s Mary Stucky reports…
This reactor is in a laboratory at the University of Minnesota ticking as it converts ethanol into
hydrogen. Researchers here envision thousands of these inexpensive reactors in communities
across America using ethanol to create hydrogen, which would then be used in fuel cells to
generate electricity.
Lanny Schmidt, a Professor of Chemical Engineering, directs the team that created the reactor.
“We’re not claiming our process is the cure-all for the energy crisis or anything like that. But it’s
a potential step along the way. It makes a suggestion of a possible way to go.”
Hydrogen is usually extracted from fossil fuels in dirtier and more costly refineries.
Schmidt says it’s much better to make hydrogen from ethanol.
“It right now looks like probably the most promising liquid non-toxic energy carrier we can think
of if you want renewable fuels.”
Not so fast, says David Pimentel, an agricultural scientist at Cornell University. For years,
Pimentel has warned about what he calls the cost and efficiency and boondoggle of ethanol.
Pimentel says ethanol is a losing proposition.
“It takes 30-percent more energy, including oil and natural gas, primary those two resources to
produce ethanol. That means importing both oil and natural gas because we do not have a
sufficient amount of either one.”
Pimentel says most research on ethanol fails to account for all the energy needed to make the fuel,
such as energy used to make the tractors and irrigate crops. Adding insult to injury, says
Pimentel, ethanol relies on huge government subsidies going to farmers and agri-business.
“If ethanol is such a great fuel source, why are we subsidizing it with 2-billion dollars annually?
There’s big money, as you well know, and there’s politics involved. And the big money is leaking
some of that 2-billion dollars in subsidies to the politicians and good science, sound science,
cannot compete with big money and politics.”
Pimentel also points to environmental damage of growing corn – soil erosion, water pollution
from nitrogen fertilizer and air pollution associated with facilities that make ethanol. But
Pimentel has his detractors.
David Morris runs the Institute for Local Self Reliance in Minneapolis. Morris is not a scientist,
but he commissioned a study on ethanol. He says Pimentel relies on out-of-date figures and fails
to account for the fact that ethanol production is getting more efficient.
Morris’ findings – a gallon of ethanol contains more than twice the energy needed to produce it.
As for subsidies…
“There’s no doubt that if we did not provide a subsidy for ethanol it would not be competitive
with gasoline. But what we need to understand is that we also subsidize gasoline, and if you took
the percentage of the Pentagon budget, which is spent directly on maintaining access to Middle-
Eastern oil, and impose that at the pump, it would add 25- to 50-cents a gallon. At that point,
ethanol is competitive, under the assumption that you will not need a large military budget to
protect our access to Iowa corn.”
But more efficient than making ethanol from corn might be grass, or even weeds. David Morris
says that’s because you don’t have fertilize or irrigate those kinds of plants, the way you do corn.
“So if we’re talking about ethanol as a primary fuel to truly displace gasoline, we have to talk
about a more abundant feedstock. So instead of the corn kernel, it become the corn stock, or it
becomes fast-growing grasses, or it becomes trees, or sawdust or organic garbage. And then
you’re really talking about a carbohydrate economy.”
Pimentel scoffs at that idea.
“You’ve got the grind that material up, and then to release the sugars, you’ve got to use an acid,
and the yield is not as high. In fact, it would be 60-percent more energy using wood or grass
materials.”
While scientists and policy people debate whether ethanol is efficient or not, Lanny Schmidt and
his team soldier on in the lab undeterred in their efforts to use ethanol for fuel. Schmidt
understands some of Pimentels’s concerns, but he thinks scientists will find an answer, so ethanol
can be used efficiency enough to help power the new hydrogen economy.
For the Great Lakes Radio Consortium, I’m Mary Stucky in Minneapolis, Minnesota.
Long known for their expanses of shorn grass and highly manicured grounds, some golf course owners are taking a second look at their landscaping practices and striving to become more environmentally friendly. In the process, however, they seem to have made a few enemies. Great Lakes Radio Consortium commentator Julia King explains:
Transcript
Long known for their expanses of shorn grass and highly manicured grounds,
some golf course owners are taking a second look at their landscaping practices and striving to become more environmentally friendly. In the process, however, they seem to have made a few enemies. Great Lakes Radio Consortium commentator Julia King explains:
In a nutshell, here’s the story: Golf Course Goes Green, Neighbors See Red.
Golf course owner Tony Krebs recently saw the environmental “light” and decided to reduce his use of pesticides, gasoline, and water. He wants to mow less, grow wildflowers, re-introduce native grasses and attract wildlife. The neighbors – instead of cheering – have filed formal complaints with the city.
Golf courses have long been havens for precision landscaping, places where the great outdoors are shaped into forms… well, unfamiliar to Mother Nature. So to some residents around golf courses, a new, more natural landscape looks suspiciously like neglect. But it’s not.
For a little over a decade, the Audubon Society has been helping to “green” golf courses with their Audubon Cooperative Sanctuary Program. While any course can become a member and receive environmental tips and guidelines, members earn certification by completing projects in specified areas. Out of an estimated 20,000 golf courses in the U.S., a select 2,300 have achieved certification.
In other words, the movement towards greater sustainability in the golf world is still young. And old standards of beauty die hard. According to an Audubon source, it’s not uncommon for bordering property owners to balk at a golf course’s naturalization. Just as one man’s treasure is another’s trash, apparently one man’s “wildflower” is another man’s “weed.”
But this is more than a beauty-in-the-eye-of-the-beholder tale. Health officials have linked weed killers to everything from childhood leukemia, to gender malformation in frogs. Yet here we have well-to-do citizens banding together to fight for such chemicals.
“We live in a community,” one concerned resident said. “We have to be accountable to one another.” But he was talking about standards of property upkeep, not about public safety or about the delicate ecosystem we share.
He’s right, though, we are accountable to one another. And not only to one another, but to those who come long after we’re gone. There is a price to be paid for that so-called “perfect” landscape, and it’s a price we will all have to pay. It’s time for responsible citizens not only to tolerate sustainability, but to demand it.
Host Tag: Julia King lives and writes in Goshen, Indiana. She comes to us by way of the Great Lakes Radio Consortium.
A herbicide is being found lingering in grass clippings and causing compost to damage gardens. The Great Lakes Radio Consortium’s Lester Graham reports:
Great Lakes residents use more than two million tires a year, and many of them end up in a landfill. But one Illinois school has found an unusual way to use some of those tires. The Great Lakes Radio Consortium’s Chris Lehman has more:
Transcript
Great Lakes residents use more than two million tires a year, and many of them end up in a landfill. But one Illinois school has found an unusual way to use some of those tires. And they’re saving on hospital costs as well. The Great Lakes Radio Consortium’s Chris Lehman has more.
(natural sound football practice, fade under quickly)
From beer cans to soda bottles, there are plenty of items that can be recycled at a typical football game. But at the 31-thousand seat Huskie Stadium at Northern Illinois University in DeKalb, Illinois, what is perhaps the largest recycling effort is in the field itself. More than 18-thousand ground-up tires are underneath the new surface of the playing field . . .mixed with sand; they provide a soft but durable base for all types of athletic events. The fake grass on top is similar to Astroturf, but project manager Norm Jenkins says this surface is better. He says the most important advantage is safety.
“It’s well documented over the last few years since these fields have been installed that the injury frequency goes way down in terms of ankle and knee injuries on this surface as opposed to the old Astroturf carpet. So it really simulates grass in that way. The other big advantage to this in our judgment is the appearance. Because really, as you sit in the stands at a Huskie football game–and even from the sidelines when you stand on that stuff–you’re convinced that the surface is grass. It looks, it appears just like a pristine grass playing surface”
The artificial turf at NIU is a brand called Field Turf. Jim Petrucelli is Vice-President of Turf USA, a Pittsburgh-based distributor of Field Turf. He says the scrap tires for the product are first washed with a high-pressure cleaning system similar to a car wash. But the tires aren’t run through grinder blades. That process is called ambient grinding because it takes place at room temperature. It tends to produce longer, rougher particles.
Instead, Petrucelli says the company cryogenically freezes the tires to temperatures below negative 80 degrees Fahrenheit.
“And then they drop them onto a hammer-mill. And the hammer-mill shatters them into pieces. And those pieces tend to have much flatter sides on them . . . that works much better in our system to prevent the rubber from migrating through the sand that it’s mixed with.”
Field Turf is used at several universities in the Great Lakes region, including the University of Cincinnati, Bucknell University in Pennsylvania, and at a University of Michigan field house. It’s also in use at dozens of high schools and public recreation facilities across the region, and has been installed in places as far away as Botswana and New Zealand.
Petrucelli says that at more than eight dollars a square foot, Field Turf is the Cadillac of artificial turf products. At Northern Illinois University, nearly one-third of the cost of installing the Field Turf was recovered through a variety of money-saving measures. The largest of these was a 200-thousand dollar grant from the Illinois Department of Commerce and Community Affairs. The money was awarded to the school for its use of the tires, which came from a salvage yard near Chicago. Robert Albanese is NIU’s Associate Vice President of Finance and Facilities.
“Every time you purchase a new tire there’s a fee that goes along with it. It goes to this fund for recycling the tires. And this process will only work, is if we use those recycled materials on the other end. And this is probably one of the bigger uses for recycled rubber that we’ve seen in the state of Illinois.”
NIU Director of Recycling Mary Crocker says the use of old tires in the Field Turf project wasn’t just about saving money.
“We’re interested in keeping the tires out the landfills. So this is probably the most comprehensive recycling program that you can find, where virtually everything has to do with recycling.”
(More football sound under)
The old Astroturf, which was removed to make way for the Field Turf, was also recycled. The university sold it for use as a soccer field overseas, earning an additional 29 thousand dollars for the school. For the Great Lakes Radio Consortium, I’m Chris Lehman.
In a narrow swath of
grass in a roadside ditch, a mallard hen nests her second brood of the
season, a rare event for these ducks. Her first ducklings were killed
by a predator.
Researchers Tina Yerkes
and John Simpson track the mallard hens by radio transmitters. They've
found many of the ducks are killed by agricultural pursuits such as
mowing. Lawnmowers can kill hens that
are nesting in grass.
John Simpson 'candles' an
egg, looking at the silhouette of the developing duckling to see how
near it is to hatching.
In the last decade or so, ducks in the Great Lakes region have not been reproducing as well as they have in the past. The number of ducklings hatching out and surviving to adults has dropped by about 25 percent. Researchers are trying to figure out why this is happening and what can be done about it. The Great Lakes Radio Consortium’s Lester Graham went into the field with researchers and has this report:
Transcript
In the last decade of so, ducks in the Great Lakes region have not been reproducing as well as they have in the past. The number of ducklings hatching out and surviving to adults has dropped by about twenty-five percent. Researchers are trying to figure out why this is happening, and what can be done about it. The Great Lakes Radio Consortium’s Lester Graham went into the field with researchers and has this report.
(sound of quack, quack overhead / cross fade to truck doors and engine startup/ bed of gravel sounds)
Mallard ducks are the most common duck found throughout the Great Lakes states. You’ll see them on farm ponds, college lagoons, and even in big city parks. But recently the mallard’s population hasn’t been growing as fast. The duck’s rate of reproduction has been falling off in the region since the mid-1980’s. Researchers with the sportsman’s conservation group, Ducks Unlimited, are involved in a three year study of mallards to find out why the ducks are not surviving in as great of numbers.
Tina Yerkes heads up the project. In a truck with something that looks like a TV antenna on top, fellow researcher John Simpson and she are in northwest Ohio, near Lake Erie, headed out to find some of the mallard hens. Tiny transmitters were surgically implanted in the ducks earlier this year and the antenna tracks the signals.
“So, this is the whole gizmo setup here. Everyday these guys go out and they track the birds. Each bird has a unique beep, if you will, uhm, a frequency. And that’s basically how we figure out what they’re doing. We started with 57 and you’re down to 38?
JS: Thirty-eight, roughly. And, eleven? JS: Twelve. Twelve have actually been killed, either by predators or farming operations on this site.”
(Truck sound under)
As the truck gets close to the last sighting of one of the mallard hens they’re tracking. John Simpson flips on the tracker and turns the antenna.
(beep beep sound)
He’s pulled over along a fairly busy road, and starts looking around in the roadside grass.
“So, she’s actually nesting in the ditch?”
“Yeah. I’m not entirely sure where her nest is here, so we’ve got to be careful.”
(sound of grass rustling)
It’s hard to believe a duck could find a place for a nest here. Most of the roadside is mowed except for a little strip of grass where we’re looking. She’s one lucky duck. A mower would kill her and destroy her nest.
“There she is right there. See her sitting on her nest?”
The mallard hen is three feet away and she’s still hard to see. John
Simpson has to flush her so that he can take a look at the eggs in the nest.
(Sound of flapping wings)
“There she goes.”
“She’s got a pile of eggs too. That’s her second nest.”
“That’s her second nest?”
“Yeah. She had a pile in her first nest.”
“Twelve eggs? Is that right?”
“Eleven.”
“Eleven?”
“Yep.”
(Ambience remains under)
The duck lost her first brood to a predator. Since she had nested close to a subdivision, it could have been a dog or cat. But the researchers say in this case it was probably a wild predator, maybe a raccoon.
“And, once we’re finished, we’ll just cover the nest so the predators don’t see it and we leave.”
It’s very rare that a mallard hen tries twice to raise a brood, But in this area the ducks are adopting a lot of unusual behaviors. Since there’s almost no grassland to nest in, hens have nested in hay fields where they’re usually killed at mowing time. One hen made a nest in a large flowerpot. At our next stop we found a duck in the backyard of a mobile home, and her eggs had just hatched.
(Peep, peep, peep of the ducklings)
The owner mowed around the duck’s nest, giving the mother and her eggs a chance to survive. Now that they’ve hatched, they’ll head to the water nearby. Tina Yerkes says development pressures have hurt the ducks here.
“In Ohio, we’re looking at pretty bad brood survival which tells us that probably we need to alter the landscape by putting wetlands back—by restoring wetlands and managed marshes for the broods. And then, probably also coupling that with some grassland habitat, ’cause as you can see, there’s not a lot of grassland habitat for them to nest in here. We need to improve that.”
The Ducks Unlimited researchers are getting some indications about what kinds of things are hurting the ducks ability to reproduce. Besides the loss of wetlands the researchers are finding that farming practices such as frequently mowing ditches and urban sprawl taking up grasslands are all contributing to a high mortality rate among ducklings and sitting hens. But the researchers haven’t collected enough information yet to make any solid conclusions. It’ll be two more years and many more sites before the Ducks Unlimited researchers have enough hard data.
Robert Payne is the Curator of Birds at the University of Michigan Museum of Zoology. He says while to researchers it might seem pretty clear that people are causing the lower rates of production in the duck population. Information like the Ducks Unlimited group is gathering will be helpful.
“Well, it seems to be common sense: the more people, the more development you have, the fewer places there are going to be for birds. But the people in our society who make the decisions like to have some data out there. (They) Like to know how many ducks, how much land, and so on. Otherwise, these people can’t really figure how much land the really should set aside for the ducks. No data, no well informed decisions.”
(sounds of birds and bullfrogs)
But some people might find data that are supposed to help ducks gathered by a group that’s chiefly supported by people who kill ducks for sport might be a bit of a conflict, or at least very self-serving. Ducks Unlimited researcher Tina Yerkes says there’s a larger purpose here than merely making hunters happy.
“The purpose is not necessarily to create more ducks to shoot, but the purpose is to alter and affect the landscape in a positive way for all the species that need the landscape. So, we’re trying to take a step back and determine what the wildlife needs and help put it back on the ground for the wildlife.”
Predictions are that the human population around the Great Lakes will steadily increase for the foreseeable future, and if the researchers’ early indications hold, it’ll likely affect the duck population even more. This study, when it’s complete, might give policy makers the information they need to find a balance between the needs of people and the needs of wildlife as the conflict between the two grows in the Great Lakes region.
For the Great Lakes Radio Consortium, this is Lester Graham.
Mallards are the most common duck in the Great Lakes region, but their numbers have been declining during the last few years. The Great Lakes Radio Consortium’s Lester Graham reports:
Transcript
Mallards are the most common duck in the Great Lakes region, but their numbers have been declining during the last few years. The Great Lakes Radio Consortium’s
Lester Graham reports.
The sportsmen’s conservation group, Ducks Unlimited is involved in a three year study, trying to learn why mallard duck populations are not increasing in the same numbers they once were. Tina Yerkes is a research biologist with the organization. She says starting in the mid-1950’s mallard flocks were growing at a pretty rapid rate.
“In the Great Lakes area, after the mid-80’s until now the production ratio has dropped and it’s dropped pretty sharply. And that for us is a warning bell, if you will, that something is going on in this area that’s causing birds not to do well.”
Yerkes and a team of biologists in Michigan, Wisconsin, and Ohio are tracking mallard hens and their broods. Early indications are that loss of habitat is beginning to affect the duck populations in the region. For the Great Lakes Radio Consortium, this is Lester Graham.
The quest for a perfectly manIcured lawn has driven some lawn care companies to create a grass resistant to weed killer. Some worry, however, that they've created an invasive species. (Photo by Philipp Pilz)
