Tag: biology

Heading Out on a BioBlitz

  • JP Anderson, Indiana Dunes National Lakeshore Park Ranger, at the start of National Geographic and the National Park Service's 2009 BioBlitz at The Indiana Dunes National Lakeshore. (Photo by Enrique Pulido)

The National Park Service has a slightly embarrassing problem. It manages some of the nation’s most
environmentally valuable land – but it doesn’t have a full account of plant and animal species that live in
the parks. One remedy is the BioBlitz. A BioBlitz is a kind of whirlwind count of all the species in a
specific place. The Park Service has been co-sponsoring BioBlitzes with National Geographic. We sent
Shawn Allee to their latest:

Transcript

The National Park Service has a slightly embarrassing problem. It manages some of the nation’s most
environmentally valuable land – but it doesn’t have a full account of plant and animal species that live in
the parks. One remedy is the BioBlitz. A BioBlitz is a kind of whirlwind count of all the species in a
specific place. The Park Service has been co-sponsoring BioBlitzes with National Geographic. We sent
Shawn Allee to their latest:

The Indiana Dunes National Lakeshore is spread along Lake Michigan’s southern shoreline.

During this BioBlitz, scientists and volunteers fan out in teams to search the sand dunes, woods, and
grassland around here.

At first, the mood’s high, but then it rains kinda hard.

We’re supposed to be counting species for 24 hours, but at first, we can’t even get out of our cars.

(ring of a phone)

“Hello? Yeah. We’re stuck in traffic, here. We came out here and I thought we were going
out in the wrong direction.”

I hitch a ride with Dr. Patrick Leacock. He’s a mycologist, a kind of mushroom expert.

I’m actually lucky to be on his BioBlitz team, because organizers from National Geographic and the National Park Service want people to count all the species
in the park.

And they mean everything – not just plants and animals that are a cinch to find.

Allee: “Are fungi something you feel that the average person doesn’t think about when it comes
to biodiversity?”

Leacock: “Yeah, there’s people, you tell them you study mushrooms, and they talk about their
athlete’s foot, or they think there’s only six different kinds or something like
that.”

Leacock says, in fact, the Indiana Dunes Lakeshore has at least 600 fungi species. He hopes the
BioBlitz team will add to that list.

Leacock: “Here we are.”

Allee: “I’m hunting mushrooms with three trained mycologists and there are six other volunteers on my team here. One of them is Zachary Benes – he’s just 9 years old. But, I gotta say, Dr. Leacock is pretty lucky
to have Zachary on the team – since he’s found the most mushrooms of anyone on the team.”

Benes: “Is it poisonous?”

Leacock: “Nope. A real mushroom.”

Tang: “Yeah.”

Allee: “Looks like you found another one, too. Where’d you find it?”

Benes: “Over there by the wood.”

Leacock: “This is collybia sub-sulphurea. Do you know what sulfur means?”

Benes: “No.”

Leacock: “It’s a kind of a yellow-orange color. So, this might be a new record for the dunes. So that’s a good one. Was it
just the one?”

Benes: “Yeah. Just the one.”

Leacock: “It’s in good shape.”

Along the trail, I chat with Yaya Tang. She’s one of the other mycologists on the team.

Tang says she’s glad to see BioBlitz volunteers search for elusive species of bats, bugs, and fungi.

“I feel like that’s an issue with biodiversity in general. Where people care about things that are cute or
that they see immediately. Like, there’s insects, too, that don’t get a lot of attention.”

Allee: “Dr. Leacock, we’re pretty much finished here. You got this container of many varieties
of fungi we’ve collected within an hour, would you have been able to get this many
yourself? If you had come out here on your own?”

Leacock: “No. The more people you have searching, that helps a lot. Different people will see
different things, too, I think. So we’ve 14 or 15 things right in my box. We have two that might be new
records for the dunes.”

The BioBlitz at The Indiana Dunes National Lakeshore lasts another 20 hours.

A few days later, Dr. Leacock writes me.

He tells me volunteers turned up at least one fungi specimen no one had ever seen in the Dunes park.

It’s a small success – enough that National Geographic, the Park Service, and other groups are
planning more BioBlitzes across the country.

For The Environment Report, I’m Shawn Allee.

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Co2 Crops Not Tops

  • Theories that crops, such as the corn in Illinois, will benefit from increases in CO2 might not be as good as predicted. (Photo by Scott Bauer, courtesy of the USDA Agricultural Research Service)

Carbon dioxide emissions from our cars and factories are the number one
cause of global warming. Scientists have long theorized that more of
the gas in the atmosphere could actually help farmers grow bigger
plants. But new research from America’s Breadbasket is challenging
that assumption. David Sommerstein reports:

Transcript

Carbon dioxide emissions from our cars and factories are the number one
cause of global warming. Scientists have long theorized that more of
the gas in the atmosphere could actually help farmers grow bigger
plants. But new research from America’s Breadbasket is challenging
that assumption. David Sommerstein reports:


Lin Warfel’s a fourth generation farmer in east-central Illinois. His
fields are flat and endless, the soil chunky and black and just about
the best in the world. An Interstate highway groans on one side of his
cornfield:


“In my career, early on, there was no Interstate past my farm.”


As traffic increased over the years, Warfel noticed a strange
phenomenon. The crops closer to the Interstate grew bigger than those
further away:


“They respond to the carbon dioxide. They can stay greener longer than
plants out into the field.”


OK… so, here’s a high school biology reminder: carbon dioxide, along
with water and sun, is an ingredient in photosynthesis, which makes
plants grow.


Increasing carbon dioxide in the atmosphere is also the biggest cause
of global warming. So scientists thought, huh, more carbon dioxide in
the atmosphere, bigger crops. They even coined a term: the “carbon
dioxide fertilization effect:”


“The effects of CO2 on crop yields are fairly well-understood.”


The Department of Energy’s Jeff Amthor has studied this stuff since the
1980s:


“We would expect that by the year 2050, that the increase in CO2 alone
would probably increase yields by about 10 to 15% in soybean, wheat and
rice relative to today’s yield, with nothing else changing.”


Other things are changing, like hotter temperatures and more drought.
But the predominant thinking has been that the increased carbon dioxide
will moderate those negative factors, maybe even outweigh them. A
recent study by the American Economic Review concluded U.S. agriculture
profits will grow by more than a billion dollars over the next century,
due to global warming. Most of this is based on experiments done in
controlled, greenhouse conditions, but new research done in real fields
is challenging the assumptions:


“Where you’re standing is what we refer to as our global change
research facility on the south farms of the University of Illinois.”


That’s biologist Steve Long. He runs what’s called the SoyFACE project
at the University of Illinois in Champaign-Urbana. Here, Long can
actually pipe carbon dioxide gas out to the fields, and grow real crops
in an atmosphere of the future.


Long strolls out to one of 16 test plots and stop at a white pipe
sticking out of the ground:


“This is one of the pipes where the carbon dioxide actually comes up
and then it will go out into the field here.”


The carbon dioxide pipes circle a plot about the size of a tennis
court. They release the gas over the crops. Computers monitor the air
to keep the concentrations steady:


“And the current atmospheric concentration of carbon dioxide is about
380 parts per million. We’re raising that to the level which is
expected for the year 2050, which is about 550 parts per million.”


Long has grown the crops of 2050 for 5 years now. His results
shocked him. The plants did grow bigger. They survived longer
into the fall, but the yields were 50% lower than expected. And
pests thrived. The Western corn rootworm, for example, laid
twice as many eggs:


“Japanese beetle, which eats quite a lot of the leaves of soybeans, do
twice as well under these elevated CO2 conditions. They live longer. They
produce many more young. The yield increases we’ve seen could start to be
counteracted by those increased pest problems.”


Long’s results found supporters and critics when published in
Science magazine last summer. Some researchers say extra CO2
could hurt agriculture more than it helps because weeds become more
aggressive.


The Department of Energy’s Jeff Amthor co-wrote a paper challenging the
interpretation of Long’s data. But he agrees more work needs to be
done in real-life conditions:


“The bigger questions that are now before us are the interactions of CO2 with
warming and change in precip, changes in weed communities, changes in
insect communities, changes in disease outbreak. There are a lot more
questions there than there are answers.”


Amthor says what’s at stake is our future food supply.


For The Environment Report, I’m David Sommerstein.

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Teachers Criticized for Evolution Lessons

  • Some teachers are struggling with teaching evolution because some disagree on religious grounds. (Photo by Elliot Jordan)

Science teachers in high schools and middle schools are on the front lines of the culture wars. Conservative Christians and others are confronting them about teaching evolution in the classroom. At the same time, teachers are learning about the growing body of evidence that supports the theory of evolution. The Great Lakes Radio Consortium’s Julie Grant reports:

Transcript

Science teachers in high schools and middle schools are on the front lines of the culture wars. Conservative Christians and others are confronting them about teaching evolution in the classroom. At the same time, teachers are learning about the growing body of evidence that supports the theory of evolution. The Great Lakes Radio Consortium’s Julie Grant reports:


Some science teachers got a chance to attend a major science conference recently. Researchers from around the world were in Akron, Ohio to present findings and learn about advances in evolutionary biology. The conference was organized by people studying the dramatic transition whales made when they moved from the land to the water.


It’s only been a few years since Ohio even allowed the concept of evolution into the state’s high school academic standards. Those standards are the basis for the state graduation test that students must pass to get a diploma.


Even though it’s part of the state curriculum, many science teachers get the brunt of complaints from students and parents who oppose teaching evolutionary theory.


THOMAS: “I did have a student come to me and literally say, ‘I cannot sit in this classroom and listen to what you’re talking about.’ And I said, ‘Why not?’ And she said, ‘Well, I’m a Christian, I can’t listen to this.’ I said, ‘Well, I’m a Christian too, so where’s the problem?’”


GRABERT: “Well, I’ve had a number whose fathers are ministers come in and tell me how I need to teach the class, and I have to talk about creationism and I just share with them what we have to teach and how the curriculum is.”


STONE: “There’s a point when you just sort of have to tell the kids, This is what you need to know to pass the test to get out of high school. So, sit down, listen, learn the facts you need to know. I’m not saying you have to believe what I say, but this is what the state says you need to know to get out of high school.”


These are teachers from rural, suburban, and city school districts but they are all dealing with this issue. They try to stay up to date on new scientific evidence to defend their classroom lessons. That’s part of the reason they’re at this science conference.


(Sound of lecture)


This day’s activities are geared toward schoolteachers. The world’s top researchers on whale evolution are explaining their latest findings. Ann Sowd teaches honors biology at Hoover High School in North Canton, Ohio.


“It’s important to be at workshops like this so that you can, as a high school teacher, be really accurate with your teachings and understand what the evidence for evolution is and why it’s really- what we do know about how organisms change over time. Because the worst thing that can happen is you’re inaccurate and then someone comes with the opposing argument and you don’t know what you’re talking about.”


The teachers are hearing from scientists from all kinds of disciplines from anatomy, to functional morphology, to geo-chemistry. The scientists are showing how their discoveries and analyses fit together and provide a picture of the evolution of the whale as it moved from land back to the ocean.


But one leading researcher says the schoolteachers need more than just new scientific research to defend their lessons in the classroom. Howard University anatomist Daryl Domning says students who question evolutionary evidence are often looking for answers that lie beyond the realm of science. But Domning says teachers often respond with the latest research and recent fossil discoveries.


“And then they’re amazed that it doesn’t convince them. Because even though they’re raising questions about scientific evidence, they’re really not passionate about the scientific evidence. They’re passionate about ‘what is the meaning of my existence?’ and until you get down to that level and surface those concerns and show that hey, evolution doesn’t mean there’s no meaning to your existence, on the contrary, it can mean all these things, it means there’s more meaning then you thought there was maybe, only then is there a way of breaking through this pattern of talking past each other, which is what we’ve been doing for thirty years here.”


Domning says teachers can help students and parents understand that accepting the evidence of evolutionary theory doesn’t have to undermine religious faith.
He encourages teachers to tell students they can believe both at the same time, to point them to places where they can get more information, and to quickly get back to the science lesson.


For the GLRC, I’m Julie Grant.

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BIOLOGISTS TRACK LYNX’S RETURN

  • Canada lynx are rare in the U.S. Their populations fluctuate following the population cycles of snowshoe hare, their main prey. Photo courtesy of the Gov't of NW Territories.

Some areas of the Great Lakes are again home to an elusive wild cat. Canada Lynx disappeared from the region about twenty years ago. Now, considered threatened, lynx are turning up in the Superior National Forest for the first time in decades. Biologists are trying to figure out why they’ve come back, and whether they’ll stay. The Great Lakes Radio Consortium’s Bob Kelleher reports:

Transcript

Some areas of the Great Lakes are again home to an elusive wild cat. Canada Lynx disappeared
from Minnesota about twenty years ago. Now, considered threatened lynx are turning up in the
Superior National Forest for the first time in decades. Biologists are trying to figure out why
they’ve come back, and whether they’ll stay. The Great Lakes Radio Consortium’s Bob Kelleher
reports:


Lynx have tufted ears, a stubby tail, and big snowshoe feet. They’re a northern forest cat,
about the size of a cocker spaniel. Lynx range across much of Canada and Alaska, but
historically they were found in the Great Lakes region as well. Lynx are loners and range a huge
territory. They seem to follow their favorite prey, snowshoe hare, and recently, Minnesota’s
Superior National Forest has been jumping with hares.


“It doesn’t matter where snowshoe hares are. If they’re there, that’s where cats are going to be.”


University of Minnesota Researcher, Chris Burdette, has one possible explanation for the return
of Canada Lynx.


“There’s a lot of snowshoe hares in this part of the area, and up to 90% of a lynx’s diet is
snowshoe hares.”


Hare populations boom and bust in about seven-year cycles. But in recent population booms, the
lynx were missing. By the mid-1990s, lynx were considered gone from Minnesota, until now.
Three years ago, the cats were spotted again in the region.


Burdette has just begun to count and track northeast Minnesota’s lynx. Two cats have been fitted
with radio collars. It’s not yet clear how many others are wandering the forest. And Burdette
says, lynx do wander.


“It’s very likely that the majority of these animals migrated from Canada. These animals innately
want to disperse long distances.”


Burdette was checking his traps recently, marching through dense balsam fir and the last
remnants of spring snow.


(walking through snow)


His lynx traps are chicken wire boxes, the size of a big dog house, with a bit of hare or beaver in
the back and a door on the front poised to slap shut. But on this day, there were no lynx to be
found.


“It seems like it’s been in there. We cover it up with some balsam, spruce, pine
boughs – whatever we have to sort of make it look more natural. So this one looks clear.”


Lynx were added to the list of threatened species three years ago. An environmental group sued
the U.S. Fish and Wildlife service, saying the agency’s recovery plans overlooked lynx
populations in the Western Great Lakes, Maine and the Southern Rockies.


Mike Leahy, Counsel for Defenders of Wildlife, says it’s clear there are lynx in the Great Lakes
Region.


“The Minnesota Department of Natural Resources had for a long time vehemently denied that
there could possibly be more than one or two lynx in the entire state, and, they found indeed,
there’s a resident population of lynx in Minnesota.”


Lynx aren’t entirely welcomed. Some residents worry that rules protecting the threatened species
might stop timber sales, or close roads and recreation trails. They remember the Pacific
Northwest, where logging was stopped for spotted owls. But that won’t happen for lynx,
according to Superior National Forest Biologist, Ed Lindquist.


“It’s certainly not a four-legged spotted owl. It really likes regenerating forest – dense
regenerating forest – that provides good snowshoe hare habitat.”


And regenerating forest is what you get after harvesting timber. New aspen growth attracts hares.
Lynx also need older growth nearby for shelter.


Chris Burdette’s study will help create a lynx recovery plan. But he says recovery – actually
getting the cat off federal protection – isn’t even on the horizon.


“No where near it. Very preliminary stages. We’re just in the data collection stage right now, so we
can put some kind of scientific thoughts into the process of managing this species.


There’s little known about the elusive cat or it’s prey. Understanding snowshoe hares will help
researchers understand the lynx.


“Are they going to be here in three years? Are they going to be here in five years, or whatever?
That’s a very open question.”


Burdette will trap lynx until bears begin raiding the bait in his box traps. Then he’ll radio track
collared lynx and monitor hare feeding areas for signs of lynx. The lynx study is funded for three
years, but it might take ten to begin understanding this rare cat.


For The Great Lakes Radio Consortium, I’m Bob Kelleher.

Biologists Launch Society to Save Sturgeon

Biologists from seven countries are banding together to protect a large, ancient fish. Earlier this month, scientists launched what they call the “World Sturgeon Conservation Society.” The Great Lakes Radio Consortium’s Patty Murray has more:

Transcript

Biologists from seven countries are banding together to protect a large,
ancient fish. Earlier this month/last month (March) scientists launched what they
call the “World Sturgeon Conservation Society.” The Great Lakes Radio
Consortium’s Patty Murray has more:


Sturgeon are among the oldest fishes in the world. They’ve been around
since the pre-historic era.


But modern pressures are testing the fish. That’s why sturgeon biologists
recently formed the “World Sturgeon Conservation Society.”


Ron Bruch is a sturgeon biologist with the Wisconsin Department of Natural
Resources.


He says North American sturgeon stocks are fairly healthy. But Bruch says
that’s not the case in the Caspian and Black seas where the fish often wind
up on the illegal caviar market.


“The stocks there are on track to collapse in the next 15-20 years because
of poaching, problems with habitat and pollution. There’s a real need in
the sturgeon community for international help to pull that situation out
before it’s beyond repair.”


Bruch says members of the World Sturgeon Conservation Society will share
research that can help reduce illegal sturgeon harvest. One idea is to
raise sturgeon on aquaculture farms to offset the need for black market
caviar.


For the Great Lakes Radio Consortium, I’m Patty Murray.

Species Diversity Remains in Remnant Wetlands

While wetlands have disappeared in great numbers over the last century in the Midwest, it seems that most of the wildlife relying on them have survived. The Great Lakes Radio Consortium’s Bill Wheelhouse reports:

Transcript

While wetlands have disappeared in great numbers over the last century in the Midwest, it seems
that most of the wildlife relying on them have survived. The Great Lakes Radio Consortium’s
Bill Wheelhouse reports:


Nearly 90 percent of the wetlands in the Midwest are gone. They have been replaced by farm
fields and development. A study in the February issue of Conservation Biology says despite the
change. Most of the native species have survived in the remaining wetlands. Co-author David
Jenkins is a biologist at the University of Illinois. He says the study of crustaceons shows more
than 90-percent of those species are surviving in isolated shallow ponds and puddles. Jenkins
says the wetlands range in size from an office cubicle to a football field. He says there is far
more biodiversity tucked away in the Midwest than previously thought, but says the remaining
wetlands must be protected.


“It’s kind of a catch 22, in that the species that have been still hanging on are less likely to be able
to hang on if we were to lose more wetlands.”


Some state legislatures are considering measures that might help protect these types of wetlands,
although discussions are still in the early stages. For the Great Lakes Radio Consortium, I’m Bill
Wheelhouse.

Virgin Shark Birth Sets Researchers in Motion

  • Biologists are looking at how a shark in a Great Lakes region aquarium gave "virgin birth" last year. Photo courtesy of Belle Isle Aquarium, Detroit.

A female shark in an aquarium in the Great Lakes region has apparently given virgin birth. Four shark eggs hatched last year and three of those babies are now growing normally. As the Great Lakes Radio Consortium’s Celeste Headlee reports, it may be some time before the cause can be determined, but the event is still a surprise for biologists:

Transcript

A female shark in an aquarium in the Great Lakes region has apparently given virgin birth. Four
shark eggs hatched last year and three of those babies are now growing normally. As the Great
Lakes Radio Consortium’s Celeste Headlee reports, it may be some time before the cause can be
determined, but the event is still a surprise for biologists:

Biologists have a technical term for virgin birth. It’s called parthenogenesis. Doug Sweet is the
Curator of Fishes at the Belle Isle Aquarium in Detroit. He says parthenogenesis is common in
invertebrates and some amphibians.

“Most vertebrate animals, the females will produce eggs even if the male is not around. And it’s
just a matter of… it’s a chemical trick, basically, to get that egg to develop into an individual
without a sperm activating it.”

But parthenogenesis has been totally unheard of for sharks, until now. Last year, the Henry
Doorly Zoo in Omaha, Nebraska, announced they thought a Bonnethead shark there had
reproduced by parthenogenesis. The baby lived less than 12 hours, though, and genetic tests were
inconclusive.

But when Doug Sweet saw the press release from the Henry Doorly Zoo about a possible virgin
birth, he thought he’d try an experiment. Sweet decided to incubate the eggs of his two female
bamboo sharks. Four of the eggs developed. Sweet says the sharks were acquired by the
aquarium before they had reached sexual maturity, and they have never been exposed to a male.
He says the likely conclusion is that these sharks are reproducing by parthenogenesis.

Two other explanations, though highly unlikely, are that the shark has both testicular and ovarian
tissue, and fertilized its own eggs or that sharks are capable of storing sperm for years and even
passing it down to their offspring. Sweet has sent small clippings from the sharks’ fins to the
Henry Doorly Genetics Lab. Testing has already begun, but Sweet says it could take more than a
year to get the results. In the meantime, Sweet says the facts remain the same: a female shark
has given virgin birth. If it is parthenogenesis, he says, it will have important implications for
biologists around the world.

“Parthenogenesis just hasn’t been considered to happen in sharks; it’s never been recorded. It may
be happening all the time out there, so this is kind of breaking news in the shark world.”

The two adult bamboo sharks and the offspring are currently on exhibit at the Belle Isle
Aquarium in Detroit.

For the Great Lakes Radio Consortium, I’m Celeste Headlee.

Threatened Snake Gets Hand in Recovery

  • The Lake Erie water snake is listed as threatened under the Endangered Species Act. The U.S. Fish and Wildlife Service is developing a recovery plan for the snake – and people who live near the snake are also giving it a hand in recovery. Photo courtesy U.S. Fish and Wildlife Service.

Many people are afraid of snakes. But along the shores of Lake Erie, residents are working to keep a threatened water snake in the neighborhood. The Great Lakes Radio Consortium’s Rebecca Williams has more:

Transcript

Many people are afraid of snakes. But along the shores of Lake Erie, residents are working to
keep a threatened water snake in the neighborhood. The Great Lakes Radio Consortium’s
Rebecca Williams has more:


The Lake Erie water snake was listed as threatened three years ago. The snakes are found only
on rocky limestone islands in the western basin. And they can grow up to five feet long.


Their numbers have dropped recently because people are building houses on their shoreline
habitat. And in the past, people have killed the snakes out of fear.


Megan Seymour is a wildlife biologist. She works for the U.S. Fish and Wildlife Service.
She says, over time, most people have stopped harassing the snakes. Some
landowners have even posted signs saying, “Water snakes welcome here.”


“I think the best tactic for me has been to kind of explain the biology of the snakes, explain how
they have their own personalities, sort of… The more people learn about the snakes, the more
interested they become, and the more they start seeing it as some kind of interesting animal
versus a gross snake.”


Seymour is writing the recovery plan for the snakes. She says most wildlife recoveries take many
years, but because the locals are showing concern, she thinks the snakes will recover more
quickly.


For the Great Lakes Radio Consortium, I’m Rebecca Williams.

Killing River to Stall Spread of Invasives?

Biologists are trying to prevent invasive species such as the Asian carp, from traveling between the Great Lakes and the Mississippi River basin. The latest plan proposed by some scientists is to remove all the oxygen from a section of the Chicago River. The Great Lakes Radio Consortium’s Annie MacDowell has more:

Transcript

Biologists are trying to prevent invasive species such as the Asian carp from traveling between
the Great Lakes and the Mississippi river basin. The latest plan proposed by some scientists is to
remove all the oxygen from a section of the Chicago river. The Great Lakes Radio Consortium’s
Annie Macdowell has more:


Scientists say killing part of the river would create a barrier no fish could swim through and live.
Removing the oxygen is against the Clean Water Act, but biologists think it might be worth it.


Jerry Rasmussen is a river biologist with the U.S. Fish and Wildlife Service. He says the
potential economic and ecological disaster from the invasive species justifies creating this dead
zone.


“The real problem has been reluctance of everyone, including myself, to take a measure like this
because of the implications of it and the precedents it sets, but the concern is significant enough
with these Asian Carp that a significant problem may require significant measures to stop it.”


Rasmussen says killing a section of the river buys engineers time to work on a long-term solution
to the invasives problem, such as building a second electric barrier. He says the river would be
shut down for a minimum of two years and then re-oxygenated so that living things could return.


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

Enviros Push to Ban Wood Preservatives

Some environmental groups and labor unions are pushing for an end to using certain wood preservatives in treated lumber. They’ve jointly filed a lawsuit in federal court to push the Environmental Protection Agency to stop the use of the preservatives because they contain toxic chemicals. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

Some environmental groups and labor unions are pushing for an end to using certain wood
preservatives in treated lumber. They’ve jointly filed a lawsuit in federal court to push the
Environmental Protection Agency to stop the use of the preservatives because they contain toxic
chemicals. The Great Lakes Radio Consortium’s Lester Graham reports:


The EPA acknowledges that some of the wood preservatives such as penta and creosote contain
chemicals that can cause cancer. But, the agency has long maintained that it cannot just ban the
wood preservatives used to treat lumber, utility poles and railroad ties. That’s because it says
there are no viable alternatives. Jay Feldman is with the environmental group “Beyond
Pesticides” which is one of the organizations suing the EPA. Feldman says the EPA position used to be true,
but not anymore:


“The alternatives are on line; they’re ready to go. It’s unnecessary for us to continue to dump
over a billion pounds of these wood preservatives into the environment on an annual basis.”


Feldman argues that recycled rubber, steel and plastic materials are available at about the same
cost. And he adds many power, telephone and cable lines can be put underground rather than on
creosote-treated utility poles. The Treated Wood Council indicates that its products are safe, but the industry is
beginning to offer different preservatives without the cancer-causing chemicals because of the
concerns.


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