Trout Used as the ‘Canary’ in a Stream

  • Natural resources workers wade in the Vermillion River, 30 minutes south of Minneapolis. They're sending mild shocks through the water to capture trout and measure them. (Photo by Stephanie Hemphill)

Suburban growth typically degrades
the quality of rivers and lakes. But
developers are finding ways to protect
water quality even as they build housing
developments and malls. Stephanie Hemphill
reports on a stream in a major metropolitan
area that still has trophy-sized native
trout in it – and how people are working
together to protect the trout:

Transcript

Suburban growth typically degrades
the quality of rivers and lakes. But
developers are finding ways to protect
water quality even as they build housing
developments and malls. Stephanie Hemphill
reports on a stream in a major metropolitan
area that still has trophy-sized native
trout in it – and how people are working
together to protect the trout:

A half dozen people in waders stand nearly waist-deep in a bend of
the Vermillion River. They’re getting ready to send electric shocks
through the water.

(sound of gas motor starting)

They’re looking for trout.

They’re stunning the fish so they can catch them in nets. When they
have about ten fish of all sizes in their bucket, they pull their boat to
the side to count and measure them.

“You can see on the one he’s pulling out right now, it’s a male, it’s got
that big hook jaw on the front. 532. These are millimeters; that’s
about 21 inches. ”

Brian Nerbonne is a trout habitat specialist with the Minnesota
Department of Natural Resources, and today he’s a happy man. He’s
collecting a healthy batch of trout on this river just thirty minutes from
downtown Minneapolis. He figures the big ones they’re finding are
about six years old.

“Fish grow really fast in the Vermillion: you saw when we were
shocking there’s a lot of a other fish, suckers, creek chubs, and things
like that they can eat, they grow a lot faster eating those other fish
than if they were just eating bugs.”

Biologists regard trout as a kind of canary in the coal mine. These
trout are healthy, and that’s a sign that this river is healthy for all
kinds of animals, including people.

As you walk along the stream, you can see schools and houses and
roads literally a stone’s throw from the river. Typically, development
like this threatens the trout, because it produces warm, dirty storm
water runoff.

Twenty years ago, a local sportsmen’s group asked the state to
designate parts of the Vermillion River as a trout stream. That would
mean local governments would have to do more to protect the water
quality, and not all of them were happy with the idea.

State planner Michele Hanson had the task of coaxing local officials
to get on board.

She did that by doing what the DNR is doing today – shocking the
river to show local officials there was something there worth
protecting.

“Once everyone believed us that it’s trout stream, then we went out
and met with every community along the river, of the section that we
were going to designate as trout stream, to tell them what it would
mean to them, what changes might happen.”

It would mean every town, every township and county that the river
flowed through would have to make some changes in the way they
developed.

Now, in some sections of the river, builders must leave a buffer to
protect the stream, as much as 150-feet wide.

Also, they need to avoid increasing the amount of runoff. Rainwater
that sheets off roads and driveways and rushes directly into the river
is too warm for the trout.

Builders are learning how to get the water to soak into the ground
instead. They can build narrower streets and shorter driveways.
They can build rain gardens and other landscaping that holds the
runoff long enough that it can soak in.

The state is also building structures in the river to provide better
hiding places and spawning grounds for the trout.

(sound of counting fish)

It’s all aimed at holding onto a rare treasure – a healthy trout stream in
a major metropolitan area.

For The Environment Report, I’m Stephanie Hemphill.

Related Links

Ethanol Puts Strain on Immigrant Farming

  • Jenny Chang at a farmers' market with her produce. (Photo by Joel Grostephan)

Demand for corn-based ethanol is growing and that’s made farmland more valuable. This
year, American farmers planted 14 million acres more corn than they did last year. Some
small immigrant farmers believe that’s why they’re having a hard time finding land to rent
to grow fresh fruits and vegetables. Joel Grostephan reports:

Transcript

Demand for corn-based ethanol is growing and that’s made farmland more valuable. This
year, American farmers planted 14 million acres more corn than they did last year. Some
small immigrant farmers believe that’s why they’re having a hard time finding land to rent
to grow fresh fruits and vegetables. Joel Grostephan reports:


Jenny Chang doesn’t want to change the government’s policy on ethanol subsidies. She
just wants some good land to raise her vegetables that she sells at the farmer’s market.
When planting time came around this year, she was still looking for a plot to rent. Chang is
Hmong and she came from Laos more than 20 years ago with few job skills. For
the last 7 years, she’s made part of her income from farming on land she rents. In the
past, finding land to rent wasn’t that hard. But, Chang says through her daughter who
interprets for her, this year was different:


“She said that this year, we couldn’t find land, that’s why we got stuck with this bad area.
She’s really sad.”


With corn selling for double what it did last year, land values are going up. That means
rent is going up. And the 300 Hmong farmers in this area are having a hard time finding
land they can afford.


Kent Olson is an economics professor at the University of Minnesota. He says he thinks
land scarcity is due to higher demand for ethanol:


“Your ethanol may have started the ball rolling, and created higher prices for corn, which
pushed corn onto other land from other crops but that’s pushed soybean prices up. So we
are seeing higher rent from a couple different directions.”


In theory, ethanol from corn is supposed to be good for the environment. It burns cleaner
and means less reliance on foreign oil.


But… conventional corn farmers rely on fossil fuel-based fertilizers and chemical
pesticides. By the time their diesel-powered tractors plant the corn, combines harvest it,
trucks transport it and ethanol distillery plants cook it, the energy gain from corn ethanol
is marginal.


The Hmong farm differently. Most don’t use fossil fuel-based fertilizers or pesticides.
Instead, they do a lot of hand weeding, and put in long days. Jenny Chang fertilizes her
tomatoes with chicken manure. Chang’s daughter, who is also named Jenny Chang, says
many older Hmong farmers are suspicious of chemicals:


“They like gardening the way they used to back in old Laos. They don’t really know what
insecticides and pesticides are, or how to use it so that’s why they just don’t use it. And a lot of
people are afraid of cancer, so they just like to grow things organically because they eat it
themselves.”


And researchers say growing food this way seems more environmentally friendly than
growing corn for ethanol.


Bill Moseley is a professor at Macalester College in St. Paul. He studies the
environmental effects of agriculture:


“Conventional corn production is displacing, in this particular case, a form of
agriculture that is more environmentally sound in terms of it’s using fewer fossil
fuel imports, and it’s producing crops for the local market, it’s particularly ironic in
this instance.”


Government officials don’t think increased corn production for ethanol is the problem.
Perry Aasness works with the U.S. Department of Agriculture’s Farm Service Agency. When he learned the Hmong farmers were having a hard time finding land to rent, his
agency helped them. But Aasness believes corn production for ethanol is NOT the cause
of the land shortage:


“Well, at least in Minnesota I think it’s very, very minimal. I think the real issue that I
have seen in Minnesota is that the Hmong farmers, the Hmong community is primarily
based in the Twin Cities metro area. They have to go further out to get land — a lot
of it I think is just due to urban sprawl.”


For many people in the Minneapolis-St. Paul area, the Hmong are the face of agriculture
at farmers markets. But since no government agency keeps track of their numbers, it’s
hard to know if their tradition of raising crops on small plots of rented land is going well,
or if ethanol and high corn prices are actually putting their small businesses in danger of.


For the Environment report, I’m Joel Grostephan.

Related Links

Car Sharing Gets Profitable

  • Through car sharing programs, users rent cars on an hourly basis. (Photo courtesy of Zipcar)

There’s nothing unusual about renting a car by the day.
It’s commonplace at airports nationwide, but for most Americans,
renting a car by the hour is a strange notion. Renting a car by the hour
is often called “car sharing.” Car sharing is good for the environment
because its users only get the car when they need the car. They usually
take buses and bikes to get around. Car sharing has caught on in a few big
cities on the east and west coasts. That’s largely due to the efforts of a pair
of private companies, Zipcar and Flexcar. Now those firms are poised to
expand their operations. The Great Lakes Radio Consortium’s Todd Melby
has this report:

Transcript

There’s nothing unusual about renting a car by the day. It’s
commonplace at airports nationwide, but for most Americans, renting a
car by the hour is a strange notion. Renting a car by the hour is often
called “car sharing.” Car sharing is good for the environment because its
users only get the car when they need the car. They usually take buses
and bikes to get around. Car sharing has caught on in a few big cities on
the east and west coasts. That’s largely due to the efforts of a pair of
private companies, Zipcar and Flexcar. Now, those firms are poised to
expand their operations. The Great Lakes Radio Consortium’s Todd
Melby has this report:


For the past six months, a nonprofit called the Neighborhood Energy
Consortium has had the Minneapolis/St. Paul car sharing market to itself.
The non-profit group has raised about $450,000 to buy 12 cars. Those
energy-efficient hybrids have attracted about 140 people to join the
HourCar program. That’s Hour with an “H.”


(Sound of bus stop and rumble of passing truck)


On this Saturday morning, Mary Solac is shivering at a bus stop, waiting
for a ride to go pick up her HourCar. Despite the obvious inconvenience,
she says it’s worth it.


“You don’t have to worry about insurance. You don’t have to worry
about gas. It’s like okay, I’m paying what I’m paying and I don’t have to
worry about fixing the blasted car either.”


After a short bus ride, Solac does have to worry about more mundane car
concerns… such as scraping the ice and snow off the window.


(Sound of ice/snow scraping on the windshield)


To date, Solac’s only choice for renting a car by the hour has been
HourCar. That’s about to change.


The nation’s largest car sharing company — Zipcar of Boston — is
invading HourCar’s Minneapolis turf. Nearly 50,000 people now take
turns driving about 500 Zipcars, mostly in Boston, New York and
Washington, D.C.


Scott Griffith is the CEO of Zipcar.


“Over the last several years, we’ve really focused on those cities and getting
them past profitability, past the break even point, to prove that at the
metro market level, that we can make money in this business.”


That track record enticed a venture capital firm to invest $10 million in
Zipcar.


Another big new company is also getting an influx of cash. The nation’s
second-largest car sharing company — Flexcar of Seattle — is about half
as big as Zipcar. It too has a new investor: AOL Founder Stephen Case.
He rented a Flexcar, liked it and bought the company.


In Chicago, Flexcar has paired with a local nonprofit to put 47 cars on
the street.


Zipcar, meanwhile, is also trying to get into Chicago. It wants
government agencies in the Windy City to commit to using its cars
before entering the market. The company hopes that happens sometime
this year.


Business professor Alfred Marcus at the University of Minnesota says it’s
not unusual for emerging businesses to seek government help like this.


“To get this sector going, to stimulate it, it makes sense for their to be
some public involvement, but you would hope this could take off on its
own. I think this is transitional – these public and private partnerships,
and that’s very typical when industries start.”


In Minneapolis/St. Paul, the University of Minnesota is guaranteeing
Zipcar a $1,500 per month per vehicle subsidy, but once Zipcar meets the
$1,500 minimum, that subsidy goes away. Zipcar says it expects to do
just that in three months.


At the moment, Zipcar is growing fast. It had revenues of about $15
million in 2005. CEO Griffith says it expects to double that this year, but
Alfred Marcus with the University of Minnesota says over the long-term,
Zipcar faces big hurdles.


Zipcar has only had success in large, densely-populated cities. Its target
market is young people without cars who are highly price sensitive, and
then there’s the question of where to keep the cars. They have to be
conveniently located to the people who might want to use them.


Marcus says that if these start-ups continue to grow, someday they might
be gobbled up by bigger companies.


“The ultimate aim of Flexcars or Zipcars may be to build up a fringe
business, get it going and have a rental car company buy them or have even
have a conventional automobile company by them.”


But the car-sharing company owners say they have other plans. Zipcar
boss Scott Griffith says he’s working on a 10-year plan to make Zipcar an
international company. Flexcar owner Stephen Case says he bought that
firm “to build it” and not to “flip it.”


For the GLRC, I’m Todd Melby.

Related Links

Ten Threats: Farmers Wasting Water?

  • A farm in Manistee County, Michigan using an irrigation system. (Photo courtesy of Michigan Land Use Institute)

In the Great Lakes region, farmers are one of the biggest users of water. They
pump water from underground aquifers or from lakes and streams to irrigate their
crops or water livestock. Agriculture has been criticized for its large withdrawals
of water. Farmers say they want to be recognized in a Great Lakes water use
agreement as efficient water users, but as Erin Toner reports… it’s unclear
whether that’s true:

Transcript

The series, Ten Threats to the Great Lakes is now looking at the threat of water withdrawals from the Great Lakes. Our guide through the series is Lester Graham. He says a lot of businesses and homes use water from the basin, but one group says its use is especially efficient.


In the Great Lakes region, farmers are one of the biggest users of water. They
pump water from underground aquifers or from lakes and streams to irrigate their
crops or water livestock. Agriculture has been criticized for its large withdrawals
of water. Farmers say they want to be recognized in a Great Lakes water use
agreement as efficient water users, but as Erin Toner reports… it’s unclear
whether that’s true:


Scott Piggott is the sixth generation to grow up on his dad’s cattle farm in a small
town in central Michigan. He says not everything on the farm is perfect, but he
says he grew up knowing that you have to do things right to protect the
environment.


“If we don’t begin to stand up and say, look, this is what we’re doing to protect
the environment, I think more people will continue to say, hey, they’re not telling
us what they’re doing, they must be doing something wrong.”


Piggott also works for the Michigan Farm Bureau. He says his goal is to make
sure every farm in his state is doing everything it can to protect the environment,
including conserving water they use for irrigation.


But Piggott and the farm bureau oppose broad regulations for large water users,
such as farmers. That’s proposed in a draft of a Great Lakes regional water use
agreement. Piggott argues the agreement should treat farmers differently because
the water they use goes right back into the ground.


Piggott said in a Farm Bureau press release that, “95 percent of the water that
touches a farm field seeps into the soil providing aquifer recharge.”


Later, he qualified his statement.


“It is estimated that 95 percent of the water that touches an open, pervious space
seeps into the soils and a portion of that, which I would infer that, it does provide
aquifer recharge, but necessarily does all 95 percent of it go towards aquifer
recharge. I think that might be debated. The quote could probably be stronger in
a given direction, but I stand by it.”


Piggott says his information is based on Environmental Protection Agency
estimates. But is his 95 percent figure true?


Jon Bartholic is with Michigan State University. He’s done research on water
use on farms. He says of all the water that falls on a farm – that’s rainfall and
irrigation – about 70 percent of it evaporates.


“So the remaining part, 30, 40 percent depending where you are. It might be
almost 0 percent, if you’ve got clay soil and it’s all run off, is there to potentially
to go back and recharge the aquifer.”


Bartholic’s estimate is that 30 to 40 percent potentially flows back into the Great
Lakes basin and its aquifers – that’s nowhere near 95 percent. Bartholic says farmers
do consume water.


“Clearly, farmers are being very conscientious about their water use, but, yes, if
you use water for crops and have economic value, there is some consumptive
usage of that water.”


Other water experts in the region say the issue is complicated. A lot of factors
effect how much water used to irrigate crops actually gets back to the aquifer.
Although one expert says at best the 95-percent estimate is “theoretically
possible” if conditions were perfect.


Conditions are rarely perfect.


Mark Muller is director of the Environment and Agriculture Program with the
Institute of Agriculture and Trade Policy in Minneapolis. Muller says it’s
generally agreed that right now there’s plenty of groundwater in the Great Lakes
region, but he says there is still reason for concern. That’s because in other areas of the
country, aquifers thought to be plentiful have gone dry.


Muller says managing Great Lakes water resources is important for the close to
40-million people who rely on the basin for their drinking water. He says
managing that water correctly is also crucial to sustaining the region’s farming
industry.


“Industry and agriculture is going to look at the Great Lakes basin as a place
where they should set up shop. So, I think we should realize that we have a very
valuable resource that’s only going to become more valuable in future years.”


Muller adds that public opinion is very important to shaping the Great Lakes
regional water use agreement. He says any misleading information, from any of
the stakeholders, is just not helpful. That’s why the farm bureau’s claim that 95-
percent of the water used for irrigation recharges the aquifers is more important than
just an optimistic viewpoint. It’s seen by some as a public relations spin.


For the GLRC, I’m Erin Toner.

Related Links

Cormorant-Killing Policy Ruffles Feathers

  • Cormorant populations have risen exponentially from their previously dismal numbers. (Photo courtesy of the NOAA)

Across the Great Lakes region, the recovery of the cormorant
is booming. But some anglers and resort owners think the cormorants are eating too many of the fish that people like to eat. In some areas, wildlife managers have resorted to killing cormorants on popular fishing lakes. In one case, critics say there’s not enough evidence to justify the killing. The Great Lakes Radio Consortium’s Stephanie Hemphill reports:

Transcript

Across the Great Lakes region the recovery of the cormorant is booming. But some anglers and resort owners think the cormorants are eating too many of the fish that people like to eat. In some areas, wildlife managers have resorted to killing cormorants on popular fishing lakes. In one case, critics say there’s not enough evidence to justify the killing. The Great Lakes Radio Consortium’s Stephanie Hemphill reports:


Larry Jacobson is the third generation in his family to run the Hiawatha Beach Resort on Leech Lake, about two hundred miles north of Minneapolis. Three years ago, on fishing opener weekend, all of his twenty-one cabins were full. This year, he had no guests. Jacobson says the word has spread that fishing is down on Leech Lake. He blames the cormorants. The birds nest on a small island in the south end of the lake. Eight years ago, there were fifty nests; last year, there were two thousand five hundred.


“The cormorants eat about a pound fish a day. The way the population was just exploding out there, you could see writing was on the wall, that this was really going to make dramatic impact.”


Jacobson says his guests are still catching big walleye, but the smaller, pan-sized walleye are getting hard to find.


There are several reasons why the walleye population might be down, but Jacobson and other business owners blame it on the cormorants, and they’ve asked the Department of Natural Resources to do something about the birds.


“Leech needs to be maintained as high quality fishery. There’s such an economic impact to the area from walleyes, that if you don’t maintain it that way, everyone’s going to be suffering.”


(Sound of boat motor)


Resource officials are responding to the resort owners’ concerns. The Leech Lake Band of Ojibwe owns the island. John Ringle is wildlife manager for the tribe.


“Okay we’re headed right at Little Pelican Island right now.”


Little Pelican Island is about three acres of sand and scruffy shrubs. Hundreds of cormorants cover the shore. Ringle says they fish out here in the open waters of Leech Lake.


“They’re omnivorous so they’re eating all sorts of different varieties of fish. Right now they’re probably eating large numbers of perch.”


Ringle is working with state and federal agencies to reduce the number of cormorants nesting here, eating fish, and crowding out other birds, such as the endangered common tern.


Normally, cormorants are a federally protected bird, just like eagles. That’s because they were almost wiped out by the insecticide DDT before it was banned in 1973. But a new rule allows resource officials to harass and even kill cormorants where they’re damaging other wildlife.


This summer, workers are sitting in hunting blinds on Little Pelican Island, shooting cormorants. They use air rifles to make as little noise as possible, so the other cormorants aren’t spooked away.


So far, they’ve killed more than two thousand birds. They plan to leave about five hundred nesting pairs alive. Ringle says nobody’s happy about shooting cormorants, but he says he thinks it’s necessary.


RINGLE: “My philosophy is that as mankind utilizes the resource, we have to manage them, we’re not in finite supply.”


HEMPHILL: “Do you think we know enough to manage them?”


RINGLE: “Not really. I think the public is demanding action prior to any conclusive study being conducted.”


And that’s a big problem for Francie Cuthbert. She’s a professor and cormorant researcher at the University of Minnesota. Cuthbert says the agencies that want to cut down the cormorant population skipped an important part of the management process: finding out what’s actually happening on Leech Lake.


“They’re really being driven by complaints from citizens and resort owners who are concerned about local economics, and who just don’t like the birds; they’re afraid of the numbers. If we responded to all natural resources conflicts this way, we’d be in a state of chaos.”


Cuthbert says even with the cormorants’ dramatic comeback since the days of DDT, there still aren’t as many as there were a hundred years ago. She says rather than kill cormorants, wildlife officials should try to boost the number of fish.


The state of Minnesota is working on that. It’s stocking Leech Lake with walleye for the first time this year. Conservation officials are studying some of the birds they killed to find out what they’re eating. And the state is also limiting what size of walleye anglers can catch so the fish can recover.


That makes resort owners like Larry Jacobson nervous, because he says a lot of anglers don’t like the limits. But at least he’s glad someone’s doing something.


“The fishery is a business, there’s no question about that. If you want to sustain our economy in this area, you’ve got to manage the lake.”


Workers will continue shooting cormorants occasionally through the summer. And the control effort could continue. Experts say it’ll take several years for the fish to recover enough to draw anglers back to the lake.


For the GLRC, I’m Stephanie Hemphill.

Related Links

Greenways to Garner Green for City?

  • Proposals to build greenways in Detroit are raising interest, hopes, and concerns. (Photo by Val Head)

Many cities looking to revitalize their urban centers
have turned to greenways to spur economic development. Greenways are pedestrian or bike paths that typically run between parks, museums, or shopping districts. The Great Lakes Radio Consortium’s Sarah Hulett reports on hopes that greenways will breathe new life into one of America’s most blighted urban landscapes:

Transcript

Many cities looking to reviatlize their urban centers have turned to greenways to spur economic development. Greenways are pedestrian or bike paths that typically run between parks, museums, or shopping districts. The Great Lakes Radio Consortium’s Sarah Hulett reports on hopes that greenways will breathe new life into one of America’s most blighted urban landscapes:


This abandoned rail line twenty-five feet below street level might not be many peoples’ first choice for a walk or a bike ride. But Tom Woiwode thinks soon it might be. Woiwode is the director of the GreenWays Initiative for all of Southeast Michigan. When he takes a look down this former Grand Trunk Western Rairoad line in Detroit, he doesn’t see the fast food wrappers, tires, and crashed and rusting shopping carts. He sees trees and grass and benches. And more importantly, he sees people, and places for people to spend their money.


“So maybe a bike repair shop, restaurants, some opportunities for music venues and those sorts of things, so people can ride their bike on down to the riverfront and along the way either stay here for lunch, or along the way stop and rest and enjoy the ambiance, or take their food and go on down to the riverfront where they can enjoy the extraordinary natural resources of the river as well.”


We’re standing near the city’s sprawling open-air produce market. It’s one of the most popular draws for people from inside and outside the city limits. When it’s complete, the greenway will link the market to Detroit’s greatest natural asset: the Detroit River. Greenways are a new redevelopment concept in Detroit. But elsewhere, Woiwode says, they’ve proven a well-tested urban redevelopment tool.


“In fact, back in the late 90’s, the mayors of Pittsburgh and Denver – two municipalities that are roughly similar in size to Detroit – both characterized their greenways programs as the most important economic development programs they had within the city.”


Minneapolis is another city that’s had success with greenways. In fact, backers of the greenway plan in downtown Detroit say they were inspired by a similar project there. Last month, Minneapolis completed the second phase of what will eventually be a five-mile greenway along an abandoned rail line much like the one in Detroit. It’s called the Midtown Greenway. And it’ll eventually link the Chain of Lakes to the Mississippi River thruogh neighborhoods on the city’s south side.


Eric Hart is a Minneapolis Midtown Greenway Coalition board member. He says even the greenway’s most avid supporters joked that people might continue to use it as a dumping ground for abandoned shopping carts like they did when it was just a trench.


“Since then, since it was done in 2000, there’s been a lot of interest in the development community to put high-density residential structures right along the edge of the greenway. And it’s viewed more like a park now.”


Since the first phase was completed in 2000, one affordable housing development and a 72-unit market-rate loft project have been completed. And five more housing developments – mostly condos – are in the planning stages. Hart says people use the greenway for recreation and for commuting by bicycle to their jobs.


Colin Hubbell is a developer in Detroit. He says he’s all for greenways, as long as they’re not competing for dollars with more pressing needs in a city like Detroit: good schools, for example. Or safe neighborhoods. Hubbell says the question needs to be asked: If you build it, will they come?


“I’m not sure. I’m not sure, if, given the perception problem that we have as a city, how many people on bikes are going to go down in an old railroad right away, I’m not sure even if that’s the right thing to do, given the fact that – I mean, we have a street system. And just because there’s a greenway doesn’t mean if somebody’s on Rollerblades or a bicycle that they’re not going to stay on a greenway.”


Hubbell says Detroit already has a lot of streets and not much traffic – leaving plenty of room for bicyclists. Hubbell says it might be cheaper to paint some bike lanes, and put up signs. But he says connecting the city’s cultural and educational institutions, the river, and commercial districts with greenways is a good idea – as long as they’re running through areas where people will use them.


Kelli Kavanaugh says that’s exactly what’s happening with greenway plans in the city. Kavanaugh is with the Greater Corktown Economic Development Corporation in southwest Detroit.


“You can’t just stick a greenway in the middle of a barren, abandoned neighborhood and expect use. But when you put one into a growing neighborhood, a stabilizing neighborhood, it really works as another piece of the quality of life puzzle to kind of support existing residents, but also attract new residents to the area. It’s another amenity.”


Greenway backers say for a city struggling just to maintain its population, Detroit can only benefit from safe, pleasant places to walk and bike. And if other cities are any indication, they say greenways should also help bring another kind of green into Detroit.


For the Great Lakes Radio Consortium, I’m Sarah Hulett.

Related Links

Reducing Ground Level Ozone Pollution

  • Russ Adams mows his lawn with an electric lawnmower. He does so to reduce local air pollution such as ozone. (Photo by Christina Shockley)

Summer can be a perfect time for barbeques, weekend trips, and yard work. But those very things contribute to a summertime health hazard. The Great Lakes Radio Consortium’s Christina Shockley reports:

Transcript

Summer can be a perfect time for barbeques, weekend trips, and yard
work. But those very things contribute to a summertime health hazard. The
Great Lakes Radio Consortium’s Christina Shockley reports:


(sound of gasoline-powered lawn mower)


This time of year, it takes just a short walk along pretty much any residential
street to find someone mowing their lawn.


(crossfade, gas-powered lawn mower sound out, electric mower sound up)


But if you walk past the Minneapolis home of Russ Adams, you might take a
second look.


“My neighbors came over… they were a little bashful ’cause they
weren’t sure how to pose the question. But they wanted to know what I was
doing in my yard and what that machine was. They thought it was some kind of
new-fangled mulcher or something.”


That mulcher is actually an electric lawnmower. The mower is a sleek red and
black. It’s about the same size as a gasoline mower. There’s no cord running
to it. It runs on a battery. There’s a plug on the back of the main unit
that’s used to charge it.


(sound of garage door opening)


“Okay, so this is the garage. Just plug it in
right here, and really it doesn’t take long for it to juice up. And you just
leave it plugged in, and as soon as it’s fully charged it stops drawing on the
electricity, so it’s energy-efficient even in the recharging mode.”


Adams says the main reason he uses the electric mower is that it’s just one way
he can help improve air quality in his city. And as small a step as that
seems, emissions from small engines such as lawnmowers do cause air quality
problems.


Rebecca Helgesen is with the Minnesota Pollution Control Agency. She says one
major summertime problem is ozone. Helgesen says human activity creates the
ingredients in ozone.


“Certainly motor vehicle exhaust and chemical solvents are major
sources. Also, industrial emissions and gasoline vapors.”


The chemicals stew and combine with hot, humid conditions to increase ground
level ozone.


“When the air is stagnant – not moving very much, and it’s hot and
sunny, that’s when you see the chemical reaction that creates ozone.


Helgesen says the Environmental Protection Agency forecasts ozone, so people
will know ahead of time when not to mow their lawns or to stay indoors. The
forecast is called an Air Quality Index. It uses color codes. On a “yellow”
day, the air is dangerous for sensitive people. On a “red” day, everyone is
encouraged to limit outdoor activity. Ground level ozone can cause lung
damage. Helgesen says breathing ozone isn’t good for anyone, especially those
with asthma.


“You’re coughing more, you may find you have some tightness in your
chest, or uncomfortable. You may find that you’re tired more easily.. all of
those mean that there has been some compromising of your lungs.”


Ozone levels start to fall in the evening as people stop driving, as the sun
sets and the air cools. Helgesen says the Minnesota Pollution Control Agency
encourages people to wait to pump gas, drive, and mow their lawns until 7 or 8
at night.


Getting people to do these things is where the organization, Clean Air
Minnesota, comes in. Its members include an unusual mix of business groups,
environmental groups and others.


Bill Droessler is the group’s program director. He says Minneapolis-St. Paul doesn’t
have a big ozone problem, like some other cities… yet. Clean Air Minnesota wants to keep it that
way. If levels go up, the federal government could impose restrictive – and
costly – regulations. Droessler says his group holds on-site training programs
at participating businesses to get people to take action.


“Postpone landscaping things, use of internal combustion engines as late as
possible on those days. Avoiding backyard recreational fires.”


He says even using newer gas cans that don’t let vapors escape as easily helps
reduce ozone. Droessler says he hopes people will take the time to make just one change to
help reduce ozone levels.


Russ Adams sees his electric mower as his one small action. He concedes that
the electric mower does use electricity. But while coal-burning power plants
do pollute, his electric mower is better for air quality than a gas-powered
mower.


“My argument is that if everybody had an electric mower, then we’d be cutting
down on the air quality problem. Wouldn’t solve it, but we’d be making a good dent.
I mean, I talk to my friends all the time about how fun it is to use this
mower.”


Shockley: “So I press it down… and pull back…”
Adams: “There you go.”
Shockley: “Oh, it’s very easy!”


(sound of electric mower)


Adams: “Now what I want you to do, is do this part of the yard in the back. I’ll go in and
have some tea, maybe some orange juice, and then we can tackle the front yard
after you’re done back here.”


Shockley: “Okay, that sounds great.” (laughter)


For the Great Lakes Radio Consortium, I’m Christina Shockley.


(mower noise fades out)

Related Links

Semen Quality Harmed by Farm Chemicals?

A new study shows that fertile men in more rural areas have lower sperm counts and less vigorous sperm than men in urban centers. It’s the first study that shows that semen quality differs significantly between regions of the United States. As the Great Lakes Radio Consortium’s Annie MacDowell reports, agricultural chemicals may be to blame:

Transcript

A new study shows that fertile men in more rural areas have lower sperm
counts and less vigorous sperm than men in urban centers. It’s the first
study that shows that semen quality differs significantly between
regions of the United States. As the Great Lakes Radio Consortium’s Annie
MacDowell reports, agricultural chemicals may be to blame:


Researchers studied couples at prenatal care clinics in Missouri, Minneapolis, Los Angeles, and New York.


Men from the rural area of Missouri had counts and quality that were up to 58 percent lower than men from any of the urban centers.


Dr. Shanna Swan, the researcher who headed the project, says the results were
unexpected.


“I would have hypothesized that the larger, denser, probably more polluted
urban centers would have lower semen quality, so, this was a surprise.”


Swan says it’s highly unlikely the differences in the findings are due to experimental error or chance, due to strict controls.


She says environmental factors, such as agricultural chemical exposures, are the best explanation for the inconsistencies.


But she adds that right now, it’s only a hypothesis.


The team is now testing subjects’ urine for pesticide levels and comparing them with semen quality.


The researchers hope to be out with this study in the next six months.


For the Great Lakes Radio Consortium, I’m Annie MacDowell.

Endangered Mussel Rides to Renewal

  • Biologists release bass, gills laced with Higgin's Eye Pearly Mussel larvae, into the Mississippi River. Photo courtesy of the Minnesota Department of Natural Resources.

Up and down the Mississippi River, people once collected tons of mussels for the pearl button industry. Factories stamped out pearl buttons from the shells, sometimes wiping out 50,000 tons of mussels annually in the early part of the last century. In recent years, the biggest threat to local mussel species has come from the zebra mussel. That invasive species came to North America in the ballast water of ships and has since disrupted many local ecosystems. Today, there’s a new effort underway to bring back local species like the Higgin’s Eye Pearly Mussel, and it’s in an unlikely place. The Great Lakes Radio Consortium’s Todd Melby has this report:

Transcript

Up and down the Mississippi River, people once collected tons of mussels for
the pearl button industry. Factories stamped out pearl buttons from the shells,
sometimes wiping out 50,000 tons of mussels annually in the early part of
the last century. In recent years, the biggest threat to local mussel species
has come from the zebra mussel. That invasive species came to North America in
the ballast water of ships and has since disrupted many local ecosystems. Today,
there’s a new effort underway to bring back local species like the Higgin’s
Eye Pearly Mussel. And it’s in an unlikely place. The Great Lakes Radio Consortium’s
Todd Melby has this report:


Urban areas like Minneapolis-Saint Paul might seem like an unusual
location to boost the population of an endangered species.


But it’s here, below a busy bridge that spans the Mississippi River, that
biologists are searching for a safe place for their project. Divers have
just come up from the bottom of the river with a few mussel specimens.


“Well, we’ve got Big Toe, Maple Leaf, Three Ridge. Good enough I think.”


That’s Mike Davis rattling off the names of mussel species. Davis is
a biologist with the Minnesota Department of Natural Resources. The fact that
some mussels live in this part of the river makes Davis think that this
might be a good spot for the Higgin’s Eye. The Higgin’s Eye, which has an olive-
colored shell, has been languishing on the Endangered Species List since
1976.


Just two decades ago, this part of the river suffered from sewage runoff. The river is cleaner now and some mussels have returned. But not the Higgin’s Eye. And that has Roger Gordon worried. He’s a biologist with the U.S. Fish and Wildlife Service.


“They function as the kidneys of the river, more or less. They siphon everything that
goes through the river. They are a very good indicator species if we have a problem in the environment. They are usually the first species to get hit hard and disappear.”


For the past decade or so, it’s been the zebra mussel that’s been hitting the Higgin’s Eye. But the zebra mussel hasn’t made it to this part of the river. That’s why biologists are on a small flotilla of boats on this morning with 800 large-mouth bass. The bass and the Higgin’s Eye have a strong connection. Attached to the gills of those bass are thousands of Higgin’s Eye larvae.


“Right now, we’re counting fish in the cage. We have a known number of fish, 25 in
this case, that we’re going to place in these cages. And hopefully over the next several weeks, they’ll drop off and we’ll have clams in the river.”


Melby: “You’re putting them in the bucket?”


“Right now we’re putting them in a bucket and placing them in the cage over the
side of the boat.”


(sound of buckets banging and water sloshing)


The bass are put in cages so they don’t swim somewhere that’s not a good home for the Higgin’s Eye. In the wild, adult females mussels shoot embryos at unsuspecting fish swimming overhead.


“The larvae have a chemo-receptor in them. When they touch flesh, they actually shut. It’s a one-shot deal. If that fish clamps on a fin or an eyeball or a lip, it’s a no-go. He’s not going to develop. But if he’s lucky, and he just happens to be going through a gill arch of a fish and it’s the right fish, the right species of fish and the right size fish, it
will shut on that gill.”


But the Higgin’s Eye population is too low to leave to chance.


(Bubbling sounds of fish hatchery)


So Gordon and his colleagues bumped up the number of mussel larvae
per fish here at a federal fish hatchery in Genoa, Wisconsin. Instead of just a
few larvae per fish, the bass dropped into the Mississippi have several dozen
larvae attached to their gills.


That prep work took place inside the “Clam Shack,” which is really
just a metal pole barn that biologists built themselves.


“We didn’t have any money to do this. We scraped up and saved up at the end
of the year. We had seven or eight-thousand dollars. The hatchery guys just got together and built this little building.”


Since beginning their work two years ago, they’ve added approximately
12,000 mussel-rich fish to rivers in Wisconsin, Illinois, Iowa and Minnesota.


“We’re probably going to have to build another little building
like this. But we’ll scrape along and do what we can.”


Back on the river, Mike Davis of the Minnesota DNR calls the return
of the Higgin’s Eye historic. But with the zebra mussel closing in on native
mussel species like the Higgin’s Eye, he’s also a bit wistful.


“The former dead zone of the Mississippi may become
one of the last refuges for the Mississippi’s mussel species.”


In September, divers return to that same spot to check on the Higgin’s
Eye. They hope to find thousands of young clams nestled safely in their new
home. For the Great Lakes Radio Consortium, I’m Todd Melby.

City Ignites Green Space

Many cities create parks to try to incorporate green space into theirurban landscapes. But maintaining them can be expensive and laborintensive. Now, one city has created a unique solution–addingnaturalbeauty while saving money. The Great Lakes Radio Consortium’s Tasya Rosenfeld has the story: