Whose Nature Are We Talking About?

  • Several neighbors near Cook County Illinois' Bunker Hill Forest Preserve are concerned about the loss of trees. Bathsheba Burmin is third from the left. (Photo by Shawn Allee)

When somebody says a natural area, does everybody have the same thing in mind? Some might see a park with baseball fields or a golf course as a natural area. But natural area means what it looked like for hundreds or thousands of years before humans started changing the landscape. Sometimes, that natural landscape was changed so long ago, when it’s restored to the way it looked oringally, it’s not very familiar to the people who live there now. Shawn Allee talked with some people who disagree about the idea of restoring natural areas:

Transcript

When somebody says a natural area, dose everybody have the same thing in mind? Some might see a park with baseball fields or a golf course as a natural area. But natural area means what it looked like for hundreds or thousands of years before humans started changing the landscape. Sometimes, that natural landscape was changed so long ago, when it’s restored to the way it looked oringally, it’s not very familiar to the people who live there now. Shawn Allee talked with some people who disagree about the idea of restoring natural areas:

If you go to the Bunker Hill Forest Preserve just outside Chicago, you find picnic spaces, bike trails, and woods – acres of woods.

If it’s the wrong day, though, a security guard will turn you back from the woods.

Guard: “Closed off for a while? It’s closed off for a while. They’re doing a controlled burn – they’re burning that field over there.”

Man: “What are you doing exactly? Burning?”

Guard: “Controlled burn.”

Forest preserve workers in sooty, yellow fire suits are burning brush and trees.

They say soil tests show this land was once savanna – a kind of grassland with a few trees mixed in.

They’re trying to restore it to that original landscape.

Volunteers help out with this restoration, but a small number of people want to stop it.

“Everything they burned today is area they’ve cleared over the past two years. We’re opposed to cutting our urban forests.”

Bathsheba Burmin shows me the site – after it’s cooled.

She wants me to see what it takes to turn woods into savanna.

Burmin: “It’s a little muddy, so…”

Allee: “It’s hard not to notice.”

(sounds of walking through mud)

Allee: “This place is being actively transformed.”

Burmin: “Yes.”

Allee: “You can see brush piles moved around, trees have obviously been cut because you can see the stumps, and obviously they burned just today.”

Burmin: “What it does is tell the story of what the restructuring of an ecosystem looks like.”

Burmin and a few of her neighbors have protested the transformation of these woods into savanna.

Some don’t believe this was ever grassy savanna in the first place.

Burmin says, even if it was savanna – it’s not now; it’s woodland – and she regrets losing the trees.

Burmin: “If you’re not familiar with the site and you hear there’s an increase in grassland species you must be doing something wonderful. Nobody talked about what happened to all the woodland species. The reason you have an increase in grassland species, but that’s because you took out all the forest.”

Habitat restoration can be violent.

It can involve poisoning or burning unwanted plants or maybe killing animals like deer that graze on more desirable plants.

Wildlife managers use restoration techniques all the time, but on occasion critics like Burmin ask tough questions about it.

When that happens, people like Stephen Packard rush to its defense.

“Now we’re standing in a place where all the brush was cut last year.”

Packard heads the Chicago chapter of the Audobon Society.

He’s offered to show me some restored savanna, about ten miles north of that Bunker Hill spot.

It looks kinda familiar.

Allee: “There’re stumps and sticks everywhere.”

Packard: “Is this ugly or is it not ugly? Here’s my perspective on it. To me it’s like a bunch of broken eggshells after someone made an omelet. I think this is a beautiful thing to see the first stage of recovery. It is stumps, it is bare ground, but from doing this, I know certain plants will start to come up and keep developing.”

Packard says no one restores savanna because they like chopping trees.

It’s just that some plants need open space and light – like in a savanna. Dense woods create too much shade for them.

He says if we let some natural areas literally run wild, a few aggressive species take over, and the rare ones lose out.

“You lose millions of years of evolution of these thousands of species that may be important to the planet, so why not have some places where we can take care of them?”

Packard says some natural areas are so unhealthy, that for now, we need to protect some parts of nature from others.

And if you don’t buy that – you don’t buy restoration.

For The Environment Report, I’m Shawn Allee.

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Study: 1/4 of World’s Mammals at Risk

  • A study finds that 25% of all mammals are threatened with extinction (Photo courtesy of the US Fish and Wildlife Service)

A new survey shows that at least
one fourth of the world’s wild mammal
species are at risk of extinction. Julie
Grant reports that scientists find human
activities are largely to blame:

Transcript

A new survey shows that at least
one fourth of the world’s wild mammal
species are at risk of extinction. Julie
Grant reports that scientists find human
activities are largely to blame:

The mammal survey took five years, and 1,700 experts in
130 countries to complete. Their results are just being
published in the journal Science.

Jan Schipper of Conservation International is a lead author.
He says the assessment paints a bleak picture.

“It was in fact surprising to find out that 25% of all mammals,
to which we currently have sufficient information, are
threatened with extinction, meaning they are either critically
endangered, endangered, or vulnerable.”

Schipper says hotbeds for extinctions are in Southeast Asia,
Africa and Central and South America – and it is largely
driven by consumers.

For example, if we demand bananas in the middle of winter,
it drives growers to cut down native forests for banana
plantations – but without those native forests, many
mammals are left without a place to live.

For The Environment Report, I’m Julie Grant.

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Testing a Better Bug Spray

  • The USDA is testing a new bug spray to ward off mosquitos and other pests (Photo by Lester Graham)

Researchers are working on new chemicals
to keep mosquitoes from biting. The Environment
Report’s Mark Brush reports they might have found
a better alternative to DEET:

Transcript

Researchers are working on new chemicals
to keep mosquitoes from biting. The Environment
Report’s Mark Brush reports they might have found
a better alternative to DEET:

The EPA says DEET is safe to use on your skin. But the repellent’s smell and stickiness
turns some people off. And spraying DEET on your skin won’t protect you from all types
of mosquitoes.

So researchers are working on alternatives.

Uli Bernier is research chemist with the USDA. He says their research team is looking
for a compound that will work against some of the most dangerous mosquitoes.

“DEET works against a great variety of insects, but not against all of them. And in
particular some of the malaria transmitting mosquitoes will bite through DEET without
difficulty.”

Bernier says their research has turned up some chemicals that do a better job than DEET.
The chemicals keep mosquitoes from biting for up to three times longer. Bernier says their
next step will be to test the chemicals for possible human health effects and for their
effectiveness on other insects.

(mosquito buzzing sound)

For The Environment Report (sound of swat) – gotcha – I’m Mark Brush.

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Warmer World Brings Health Worries

  • The back of a female patient with a doctor who is using a stethoscope to listen to her lungs. (Photo courtesy of the National Cancer Institute)

Public health advocates say governments and
individuals should take more precautions as global
warming continues. Chuck Quirmbach has more:

Transcript

Public health advocates say governments and
individuals should take more precautions as global
warming continues. Chuck Quirmbach has more:

Most scientists say a warmer climate will bring some good things for public health, like
longer food growing seasons in parts of the world. But Dr. Georges Benjamin also
believes the forecasts of what bad things might happen.

“We know that climate change certainly could increase air pollution, leading to increases
in things like asthma, allergy and chronic obstructive pulmonary disease”

Benjamin heads the American Public Health Association. The group is issuing a
blueprint for health professionals and the public to combat climate change.

The effort includes calls for government to provide more shelter and health monitoring
during heatwaves, and recommendations for people to be more careful during high
temperatures and heavy rainfalls. The group will also urge Congress to consider health
issues when it debates legislation to curb global warming.

For The Environment Report, I’m Chuck Quirmbach.

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Turn Off the Lights on Saturday Night

  • Photograph of illuminated incandescent-replacement fluorescent bulb. (Source: Jdorwin at Wikimedia Commons)

On Saturday night from 8 to 9 the World Wildlife
Fund is asking you to turn off your lights for Earth Hour.
Lester Graham reports sitting in the dark is supposed to
make you think about how you contribute to global warming:

Transcript

On Saturday night from 8 to 9 the World Wildlife
Fund is asking you to turn off your lights for Earth Hour.
Lester Graham reports sitting in the dark is supposed to
make you think about how you contribute to global warming:

The World Wildlife Fund is organizing the Earth Hour. Some have questioned whether
what some might consider a “publicity stunt” will really make a difference. Joe Pouliot is
with the group.

“Well I wouldn’t characterize this as a stunt. Climate change, unfortunately, hasn’t been getting a huge amount of attention. But because of the activities of Earth Hour, people are really beginning to focus on the challenges of climate change.”

Earth Hour wants you to shut off your lights for an hour because lot of electricity comes
from coal-burning power plants. They put out a lot of carbon dioxide, a main
greenhouse gas. Pouliot says people, organizations and cities on six continents are
participating in Earth Hour, including the cities of Toronto, Altlanta, Chicago, Phoenix
and San Francisco.

For The Environment Report, this is Lester Graham.

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West Nile Virus Returns

West Nile Virus has swept the nation from east to west, but it’s hitting some areas
harder than others. Lester Graham reports:

Transcript

West Nile Virus has swept the nation from east to west, but it’s hitting some areas
harder than others. Lester Graham reports:


Nationwide this year, there have been 576 cases of West Nile Virus reported in humans this
year. The mosquito-borne disease has spread across the nation. Emily Zielinski-
Gutierrez, with the Centers for Disease Control, says some areas are worse than
others. There are West Nile Virus hotspots in the Dakotas and Nebraska, but it can
pop up anwhere… especially where there’s been a lot of rain or flooding:


“Basically, if you’re anywhere in the United States, you need to worry about a
mosquito bite that you get. If you’re in these states that have experienced and
communities that have experienced more intense activity, you need to be even that
much more concerned about protecting yourself from mosquito bites.”


She says look for the ingredient DEET in mosquito repellant. The CDC warns just
because you’ve not heard a lot about West Nile Virus in the news this year doesn’t mean it’s
not a problem in your area.


For the Environment Report, this is Lester Graham.

Related Links

New Virus in Mississippi River

Fish biologists are worried about a
virus from Europe that is killing fish in the
Mississippi River. Sandra Harris reports:

Transcript

Fish biologists are worried about a virus from Europe that is killing fish in the
Mississippi River. Sandra Harris reports:


Spring Viremia is killing carp in the Mississippi River. Biologists are concerned the
virus could spread to other smaller related fish, called cyprinids, that are used for bait. Ron Benjamin is
a fish biologist with the Wisconsin Department of Natural Resources:


“Right now, we’re not seeing that happen. We see the forest base is pretty stable out there. Like I say, it does affect other cyprinids but it’s to various degrees. And so, at least so far, we haven’t seen that impact.”


Benjamin says Spring Viremia was discovered in the Mississippi in 2002 when
antibodies of the virus were found in carp. It is not harmful to humans who eat the fish.
The virus is thought to have been brought to the United States in goldfish imported from
Europe.


For the Environment Report, I’m Sandra Harris.

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Study Links Plastic Ingredient to Prostate Cancer

New research shows that animals exposed to a chemical found in plastics are more likely to develop prostate cancer later in life. Scientists say their research is the first to find such a link.
The GLRC’s Mark Brush has more:

Transcript

New research shows that animals exposed to a chemical found in plastics are more likely
to develop prostate cancer later in life. Scientists say their research is the first to find
such a link. The GLRC’s Mark Brush has more:


The chemical is known as bisphenol A. And it’s used to make the hard plastic found in
everything from microwave cookware to baby bottles to CDs – just to name a few. The
researchers say that rats exposed to this chemical in their mother’s womb are more likely
to develop prostate cancer as adults. They say the rats were exposed to low doses of the
chemical, similar to the levels found in humans.


Gail Prins headed up the study published in the journal Cancer Research.


“I want to take a lot of caution. I’m not saying that I have evidence that this is causing
human cancers, I’m just saying it’s part of the body of evidence that these type of
chemicals and exposures may be a contributing factor.”


Prins says it’s difficult for people to avoid these chemicals because they’re in products
we use everyday. But she says plastic containers tend to release more chemicals when
they are heated.

For the GLRC, I’m Mark Brush.

Related Links

Chemicals Leak Into Microwave Popcorn

Scientists have found that microwave popcorn could be a source of a chemical that might cause cancer in humans. The GLRC’s Mark Brush has more:

Transcript

Scientists have found that microwave popcorn could be a source of a chemical that might
cause cancer in humans. The GLRC’s Mark Brush has more:


(sound of microwave popcorn)


Alright, I like microwave popcorn too, and I don’t like where this study is going, but the
Food and Drug Administration found that the grease-resistant coating inside microwave
popcorn bags can get into the popcorn oil. The coating is made with chemicals similar to
those found in non-stick pots and pans.


Tim Begley is a research chemist with the FDA. He was the lead author on a study
published in the journal Food Additives and Contaminants:


“A microwave popcorn bag is a very, very, very extreme situation, because of the heat
generated on a microwave popcorn bag.”


He’s talking about 400 degrees in just a minute or two. The chemicals used to make the
grease resistant coatings can break down into a suspected carcinogen known as PFOA,
but Begley stresses it is not known whether people are exposed to PFOA after eating a
bag of microwave popcorn. He says more study is needed.


For the GLRC, I’m Mark Brush.

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Migration Season Brings Bird Flu Worries

  • Julie Craves stands in the area where she sets up mist nets during migration to catch land birds. (Photo by Christina Shockley)

Researchers have been monitoring the spread of a potentially deadly strain of avian influenza overseas. Health officials worry the H5N1 strain could mutate into a form that could infect humans. Some researchers say the virus could make its way to the United States as early as this fall… by way of wild migratory birds. The GLRC’s Christina Shockley reports:

Transcript

Researchers have been monitoring the spread of a potentially deadly
strain of avian influenza overseas. Health officials worry the H5N1
strain could mutate into a form that could infect humans. Some
researchers say the virus could make its way to the United States as early
as this fall… by way of wild migratory birds. The GLRC’s Christina
Shockley reports:


Wild birds carry all sorts of influenza viruses. Most are of no threat to
people, but the H5N1 strain is different. When it gets into people… it’s
often fatal. Overseas the strain has killed whole farms of poultry such as
chicken and ducks… it’s also infected other types of animals, including
cats.


The H5N1 strain has not been found in the United States, but most
experts say it’s just a matter of time before it is. Some say infected
domestic poultry or smuggled pet birds will likely bring the virus to the
U.S. Others say the virus could come here by way of migrating birds…
that are on the move now.


Steve Schmitt is the lead veterinarian for Michigan’s Department of
Natural Resources. He says birds from Asia… that are possibly infected
with the H5N1 strain are on their way to Alaska right now. There, they
could mingle with birds that will later fly back to the United States.
Schmitt says there are four major flyways over the U.S.… the Pacific,
central, Mississippi, and Atlantic.


“There are birds that will winter in Asia and then come back and nest in
Alaska. If they bring the virus back with them, then they could transmit
that to birds that are in Alaska that come down any of these four major
flyways, and that of course is a big concern, moving it all over the
country.”


Schmitt says most birds that nest in Alaska use the Pacific flyway along
the Pacific coast… to migrate south to the U.S. and Mexico. He says
that means, if the virus were to come to the United States via migratory
birds, the pacific coast would probably be its first stop in the lower 48.
Schmitt says then, birds that use the other flyways could become
infected.


“Most of the migration is north-south, but you do have a few that will
move – jump over to another flyway, and when that happens, the
potential to move the virus to that new flyway happens. Once it’s in a
new flyway, that north-south movement would take over.”


Programs are underway an Alaska and throughout the United States to
test wild birds for various strains of avian influenza, including H5N1.
Experts say waterfowl and shore birds are the most likely carriers of the
dangerous strain, but some say land birds – such as migrating songbirds –
should be tested, too.


(Sound of birds)


Julie Craves studies land birds at the Rouge River Bird Observatory on
the University of Michigan’s Dearborn campus. She catches and bands
thousands of wild birds each year during their spring and fall migrations.


This year, Craves will participate in a study that hopes to eventually test
hundreds of thousands of birds across the U.S. and Latin America for
avian flu strains.


“It’s just a great opportunity with people handling birds already, we may
find out some very interesting things about which subtypes are present in
land birds, and if indeed this disease does come to North America, we
will have a head start on seeing what types of migratory pathways are
being used by birds.”


Craves says very little is known about how avian flu moves among land
birds, and experts say each time the virus is transmitted to a different
species it mutates, and each time it mutates, the chances are greater that
it will change into a form that’s easily passed among humans. That’s a
big concern, because such a mutation could lead to a quick spread of
human cases across the globe.


But some say that might never occur… they say the strain might be
unable to mutate into one that’s dangerous to humans.


Arnold Monto is a professor of epidemiology at the University of
Michigan. He says there will be a problem if the strain mutates, but it’s
unlikely people will get the virus from migrating birds.


“I doubt very much whether we’re even gong to see even a handful of
cases in the United States, should avian influenza arrive, and it probably
will, with the migratory birds coming down from Alaska, perhaps next
fall.”


Monto says most of the human transmissions overseas have been from
poultry being raised in the back yard, and not from wild birds. That
means visiting the ducks and geese in the park… and feeding songbirds
in the back yard… are not high-risk activities. Monto says people should
take basic precautions, such as washing hands, to avoid contracting any
sort of flu virus.


Many experts say, on the list of things to worry about, catching a deadly
form of avian influenza is no where near the top of the list of dangers.


For the GLRC, I’m Christina Shockley.

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