Interview: Helping Honeybees

  • Honey bees pollinate a wide variety of crops throughout the growing season. (Photo courtesy of Scott Bauer, USDA Agricultural Research Service)

Honeybees are in trouble. They’ve been pestered by invasive mites. There are concerns about how agricultural chemicals might be affecting bees. And in recent years there’s been growing concern about the disappearance of honeybees. It’s called Colony Collapse Disorder. Lester Graham talked with Christy Hemenway with Gold Star Honeybees, based in Bath, Maine. Gold Star manufactures bee hives for beekeepers.

Transcript

Honeybees are in trouble. They’ve been pestered by invasive mites. There are concerns about how agricultural chemicals might be affecting bees. And in recent years there’s been growing concern about the disappearance of honeybees. It’s called Colony Collapse Disorder. Lester Graham talked with Christy Hemenway with Gold Star Honeybees, based in Bath, Maine. Gold Star manufactures bee hives for beekeepers.

Lester Graham: Beekeepers expect to lose about fifteen percent of their bees over the winter, but for the past four years a survey by the USDA and the Apiary Inspectors of America has found that winter die-off has been about thirty percent. What’s going on here?

Christy Hemenway: Good question. One of the trickiest things about the Colony Collapse Disorder that most people have heard something about…is it’s difficult to study because it’s primary symptom is that the bees simply disappear from the hive. So there’s not a lot left behind to take to the lab and look at the details. So its primary symptom being that they disappear then the question would be why? and where are they going? That leaves us looking at conditions that bees are being raised in, and what are we doing to them, and with them, and it has left a lot of people scratching their heads, you might say. I think that a shift in the way we look at bees and possibly in the way we farm. If we were to begin farming in a way that supported bees it would begin to eliminate a lot of these things that are sort of dog-piling because it’s just a lot to ask a small insect to carry. And if we could do one less thing wrong, or one thing a little less wrong, then I think that we could really start to turn the tide.

Graham: When you say change farming, what do you mean by that?

Hemenway: Well the idea of industrial agriculture, or mono-cropping, where we’re growing, for instance, if you want to pick on a pretty large target, the California almond groves–it’s about 700-thousand acres of nothing but almonds. It creates an interesting situation. First off, you have to understand that almond trees bloom for just about 22 days out of the year. So if you’re a bee living in the middle of 700-thousand acres of almond trees, what do you plan to eat for the other three hundred and forty-some days of the year? So we’ve created the migratory pollination situation by having to bring bees in to these trees because there’s no way for them to be supported for the rest of the year. So if you’re farm is diverse and has things that bloom throughout the course of the bee season, when you’ve got warm enough weather, then you’re gonna find that your bees have got something to do, and something to eat, something to forage on all year round instead of for twenty two days which means you’ve gotta get ‘em out of there after that twenty-two days.

Graham: Short of keeping bees, is there anything else we can do that can help this situation?

Hemenway: Buy raw local honey from a local beekeper, maybe at a farmer’s market. That’s a great beginning. Another thing is: let your dandelions stand. Dandelions are fantastic–

Graham: Really?

Hemenway: Oh yeah, that’s great bee food, and it’s also some of the earliest food of the season. So don’t run out there with the lawnmower or the weed killer at the first sign of a dandelion, let that stuff go. Because it’s just natural, easy food, you don’t have to plant things for bees, the stuff that comes up all on it’s own is great stuff. So if you’re in any situation where you can let a lawn go a little more towards a meadow instead of a sculpted, barren, green bee-desert, do that. It’s really a wonderful thing to watch happen, first of all, and it’s just good for bees, to let them have that natural forage.

Graham: I’d love you to talk to my neighbors, that would be great.

Hemenway: Why, are they mowing down their dandelions?

Graham: Well they’re frowning at mine, let’s put it that way.

Hemenway: Oh, shame on them.

Graham: Christy Hemenway is with Gold Star Honeybees, thanks very much for talking with us.

Hemenway: You bet, thank you.

Related Links

Native Pollinators in Trouble

  • Jeffrey Pettis says while honeybees are a concern because they pollinate crops, the wild plants that rely on native pollinators can be in trouble as well. (Photo courtesy of the US Fish and Wildlife Service)

Honeybees have been dying by the millions because of colony collapse disorder. But government officials say it’s not just the bees that are in trouble. Lester Graham reports.

Transcript

Honeybees have been dying by the millions because of colony collapse disorder. But government officials say it’s not just the bees that are in trouble. Lester Graham reports.

Jeffrey Pettis heads up the USDA’s bee lab in Beltsville, Maryland. He says there’s a lot of concern about honey bees because they pollinate crops. But he’s also really concerned about wild native bees, butterflies, bats that pollinate plants in the wild.

“The wild plants that rely on native pollinators can be in trouble as well. So, there’s certainly should be concern for all pollinators in addition to honeybees, which I like to think of as a major agricultural pollinator.”

Pettis says habitat destruction is hitting nature’s wild pollinators hard, but bats are also dying because of white-nose syndrome, a fungus that’s spreading, killing bats by the millions.

For The Environment Report, I’m Lester Graham.

Related Links

Mapping Underground Rivers

  • DNR hydrologist Jeff Green consults a high-resolution topographic map to figure out which sinkhole is ahead of him. The trees and grass that grow up around the sinkhole form a buffer, allowing water to soak into the soil and filtering any pollutants before it reaches the aquifer.(Photo courtesy of Stephanie Hemphill)

Spring in the north is a time of melting snow and running water. It’s the best time of year for people who study underground water flows. Those underground rivers are important, especially where surface water easily drains into bedrock. It can quickly carry pollution long distances. Hydrologists try to map these underground rivers to help protect fragile ecosystems. As Stephanie Hemphill reports, the first step in making these maps is a process called dye tracing.

Transcript

Spring in the north is a time of melting snow and running water. It’s the best time of year for people who study underground water flows. Those underground rivers are important, especially where surface water easily drains into bedrock. It can quickly carry pollution long distances. Hydrologists try to map these underground rivers to help protect fragile ecosystems. As Stephanie Hemphill reports, the first step in making these maps is a process called dye tracing.

When the snow is melting in the woods and fields, Jeff Green wants to know where it’s going.

“We’re going to hike back to two springs.”

Green is a hydrologist with the Minnesota Department of Natural Resources, and an expert in the limestone geology of Southeast Minnesota.

Green climbs a fence and splashes through a stream that’s flooding a pasture. The stream is bordered by a natural wall of limestone.

Melting snow seeps into the limestone. It runs down vertical cracks to bigger horizontal openings that look like miniature caves. Jeff Green calls these “conduits,” and some are three inches wide.

“You can imagine a pipe that big — water would move very fast, like we’re seeing. So these conduits are what we’re dye tracing.”

Green has traipsed out to this pasture to put what he calls a “bug” in a spring. The ‘bug’ is a small mesh bag about the size of a cellphone, packed with charcoal. The charcoal will capture a dye that he’ll pour into melting snow in a sinkhole a few miles away. He’ll do this in several different spots.

By tracing the paths of different colors of dye, he’ll learn the sources of the water that feeds each spring. That will help him make what he calls a springshed map.

We slog across a corn field that’s dotted with small groves of trees. They’re growing around miniature canyons, about 20 feet deep. Here, you can see how this honeycombed water highway works, and this is where Jeff Green will pour the first dye.

“This is a place where there was a conduit, an opening in the limestone.”

Green climbs down carefully into the crevasse.

“Listen! … All right!”

He’s found some running water.

“Water’s running right here. I don’t know where it’s going but it’s going someplace. So I’m going to try pouring dye here.”

He pours a cup or so of a bright red fluorescent dye into the snow.

Green marks the spot with a GPS unit. This is a place where surface water and groundwater meet.

“That snow-melt is surface water, it’s going into this sinkhole and it’s becoming groundwater as you’re listening to it.”

That means what happens here on the land directly affects the quality of the groundwater.

“In this case, it’s pretty good, you’ve got conservation tillage, lots of corn stalks left to keep the soil from eroding, and then you’ve got grass, permanent cover, around the sinkholes. So this is actually really good.”

There are wonderful trout streams around here. The map Green is making will help protect those streams by pinpointing the source of the water that feeds them.

In a day or two, Green will check the “bugs” he put in the springs, and find out exactly where the dye from this sinkhole went.

He usually finds water traveling one-to-three miles underground before it surfaces.

When the springshed map is finished, he’ll share it with local governments, farmers, and people who want to protect the water in this landscape.

For The Environment Report, I’m Stephanie Hemphill.

Related Links

Study Links Food Preservatives and Diseases

  • Nitrates and nitrites are found in a lot of foods - like bacon, hot dogs, and pepperoni - as food preservatives (Photo by Renee Comet, courtesy of the National Cancer Institute)

A new study in the Journal of
Alzheimer’s Disease finds a strong
link between some food preservatives
and an increased risk of death from
Alzheimer’s, Parkinson’s and diabetes.
Rebecca Williams has more:

Transcript

A new study in the Journal of
Alzheimer’s Disease finds a strong
link between some food preservatives
and an increased risk of death from
Alzheimer’s, Parkinson’s and diabetes.
Rebecca Williams has more:

Nitrates and nitrites are found in a lot of foods we eat: bacon, hot dogs, and even cheese and beer.

The chemicals aren’t there naturally – they’re added as preservatives. And they’re also used in fertilizers.

Dr. Suzanne de la Monte is the study’s lead author.

She says they found a strong connection between higher death rates from Alzheimer’s, Parkinson’s and diabetes and the increases in our exposures to these chemicals in our food and water since the late 1960s.

“What we’ve identified says this is certainly something I would consider very very important. Are there other things? Probably.”

She says people could be genetically predisposed to these diseases.

But she says long term exposure to nitrates and nitrites could also be playing a role in two ways: whether we get these diseases and how severe they might end up being.

For The Environment Report, I’m Rebecca Williams.

Related Links

Keeping Panthers and People From Colliding

  • Rebecca Galligan with her dogs Roscoe and Sable in their new panther-proof pet house. Galligan and her husband lost their dog Riley to a panther, so they had this enclosure built to keep their pets safe. (Photo by Rebecca Williams)

People are killing Florida panthers.
Usually it’s not intentional. But
Rebecca Williams reports biologists
are trying to figure out how to keep
panthers and people from running into
each other:

Transcript

People are killing Florida panthers.
Usually it’s not intentional. But
Rebecca Williams reports biologists
are trying to figure out how to keep
panthers and people from running into
each other:

There are only about 100 Florida panthers left in the wild. They’re endangered.

If you live down here, it’s one thing to know there are panthers hunting for food in the Everglades. But it’s something else when they visit your backyard.

(sound of tropical birds singing)

Rebecca Galligan and her husband didn’t give panthers all that much thought. Until one day, when they came home from work, and found their dog Riley had been killed.

“The scratches on the body and the way he’d been killed it was pretty obvious it was some sort of wild cat.”

Two days earlier something had killed their neighbor’s sheep. Then a dozen goats got killed.

A biologist decided the predator was a panther. In the past few years in South Florida, more people have been losing pets and farm animals to hungry panthers.

Galligan calling to dog: “C’mere, have a seat!” (Roscoe sniffs the microphone)

Now, when she’s away, Rebecca Galligan keeps her dogs Roscoe and Sable in a little panther-proof house. It’s made out of steel and chain link fencing.

“There’s so much nature and wildlife, and so I mean, we just can’t destroy it all because we want to be safe. That’s why we had this pen built, so we can keep the animals a little safer from the animals that live around us.”

And a lot of people here think the panthers have a right to stick around.

But some say there’s a gaping hole in the law that’s supposed to protect panthers.

The panther has never had what’s called critical habitat set aside. That means developers don’t have to consider the land panthers need to survive. Panther habitat or not, they can just build.

So panthers are getting crowded out by subdivisions and huge new cities.

Andrew McElwaine is president of the Conservancy of Southwest Florida. He’s asked the Obama Administration to officially give panthers that habitat.

“So, the more habitat we take away, we’re forcing panthers to move out. We’re getting reports of panthers in urban areas of Southwest Florida looking for somewhere to live, if you will.”

And, as people move in, panthers are becoming roadkill.

Last year 10 panthers were killed by cars. So far, this year, six more panthers have been killed.

(sound of cars whizzing by)

“There are some panther tracks here. There’s one there… and there…”

Mark Lotz is a panther biologist. We’re hanging out in an underpass below the highway. It was built for panthers. Miles of fences run along the highway and make a funnel, so panthers have to go below the road.

Lotz says there are 36 panther underpasses on this stretch of highway. And he says fewer panthers get hit here. But underpasses are expensive – about $2 million each. And giving panthers room to live isn’t always even that simple.

Lotz says the biggest challenge is getting people to adapt to panthers. To him, the cats are majestic. But he also knows a lot of people think they’re terrifying. Somebody actually shot a panther a few months ago.

“Naysayers could make the argument there’s no panthers in Pennsylvania or any other eastern state and things are going just fine. But then I would counter – look what’s happening with deer populations there. You know, panthers are part of the ecosystem. Without them there’s just something missing. In a way part of the wildness disappears.”

But if panthers keep running out of space, they could disappear.

We talked to the Secretary of the Interior, Ken Salazar. And we asked him whether he’d set aside critical habitat for panthers.

“Yeah, we’ll have to get back to you on that.”

That’s been the kind of response he’s given to other reporters too.

Giving panthers habitat protection would mean more obstacles for developers. And, in this economy, that could be pretty unpopular.

For The Environment Report, I’m Rebecca Williams.

Related Links

Green Last Requests, Part Three

  • One graveyard in Chicago is comprised of over 2.2 million dead at 43 cemeteries - that's a lot of land to maintain (Photo by Todd Melby)

During the past couple of centuries,
the typical graveyard hasn’t changed
much. Its central features still include
tombstones, winding paths, trees and
grass. Some critics want cemeteries to
ban tombstones, stop fertilizing, and
institute other green practices. Todd
Melby reports that traditional burial
practices die hard:

Todd Melby and Diane Richard produced a documentary on green burial called “Death’s Footprint.” You can listen to it here .

Transcript

During the past couple of centuries,
the typical graveyard hasn’t changed
much. Its central features still include
tombstones, winding paths, trees and
grass. Some critics want cemeteries to
ban tombstones, stop fertilizing, and
institute other green practices. Todd
Melby reports that traditional burial
practices die hard:

I’m in a mausoleum with Roman Szabelski. He’s the head of Catholic Cemeteries for the
Archdiocese of Chicago. He’s punching information into a computer.

Catholic grave locator: “Spell out the last name of the deceased that you are trying to
locate using the touch-screen keyboard …”

“So I’ve just keyed in my family name and I’m pushing search. Florence Szabelski is my
mother so I’m asking it to show that record to me.”

Szabelski started mowing grass at the cemeteries in 1979. Today, he presides over 2.2
million dead at 43 cemeteries. That makes Catholic Cemeteries one of the nation’s largest
graveyards.

Other than the high-tech grave locator, Szabelski says his customers prefer things the old
fashioned way.

“We come from a very conservative tradition where people want their 3 by 8, their grave,
to look like their backyard, which is perfectly manicured.”

Some people would like to change that. Advocates of something called green burial say
the perfectly manicured grass, the granite tombstones, the concrete burial vaults, the big
wooden or metal coffins, all of it, is wasteful.

Instead, they’d like to see graveyards filled with native grasses and flowers, rocks used as
grave markers, biodegradable coffins or no coffins at all.

So far, there’s not much demand for green burial.

Most people here are like Charlene and Margaret Villarreal, who are sitting near their
mother’s grave at Queen of Heaven Cemetery. Until her mother’s recent death, Margaret
Villareal had no reason to visit a cemetery.

“I’m 45 years old and nothing has brought me to the cemetery. Nothing, until she passed
away.”

The Villareals have decorated their mother’s grave with red roses, a crucifix festooned
with purple ribbons and a Chicago Cubs pennant.

On this day, they’ve come to honor their mother’s birthday.

Charlene Villarreal: “I’ve planned it since the day she died. I knew I would be here.”
(long pause)

Margaret Villarreal: “Oh get a grip. If she were here …”

Charlene Villarreal: “Sorry, Ma. It’s not as bad as it was on Mother’s Day. (Pause)
(Sniffles) I’m OK.”

They chose a traditional funeral for their mother. Her body was embalmed, which
allowed for an open casket. That casket was placed inside a concrete vault and buried. A
grave marker notes that she was a “loving wife and mother” who will always be in the
hearts of her family.

Margaret Villareal fears a green burial would have robbed her mother of the respect she
deserved.

“Here we are. We’re in the United States. That’s traditionally not how it’s done. You
might do that with animals. But as humans go there is more of a process of dignity
involved. You know, it sounds like that’s something you would do in a mass burial with
some kind of a tragedy like the Chicago fire but not something you’d do to remember
your loved one.”

Environmentalists dispute that. They say most people simply don’t know enough about
green burial to make an informed decision.

Whether that’s true or not, Roman Szabelski of Catholic Cemeteries is plowing ahead
with his plans. He’s got plenty of land on hand for tomorrow’s dead.

“We’re sitting in Queen of Heaven Cemetery right now, which is roughly about a 300-
acre site. About 100 of those acres are leased to the golf course next door. As we need the
property, the golf course will go from 18 to 9 to zero and a driving range and that
property will be used.”

When Szabelski adds up all the land Catholic Cemeteries owns, he figures it can keep
doing business as usual for the next 100 to 200 years.

For The Environment Report, I’m Todd Melby.

Related Links

Green Last Requests, Part One

  • Amy Weik has a will drawn up that specifies a green burial (Photo by Todd Melby)

Memorial Day is coming up. Many people still visit the graves of family and friends, maybe bring flowers. When a loved one dies, grieving prevents most of us from thinking about the environmental consequences of conventional funerals and burial. But some people are beginning to weigh the environmental costs of caskets, burial vaults and grave markers. Todd Melby reports on the green death movement:

Todd Melby and Diane Richard produced a documentary on green burial called “Death’s Footprint.” You can listen to it here .

Transcript

Memorial Day is coming up. Many people still visit the graves of family and friends,
maybe bring flowers. When a loved one dies, grieving prevents most of us from
thinking about the environmental consequences of conventional funerals and burial.
But some people are beginning to weigh the environmental costs of caskets, burial
vaults and grave markers. Todd Melby reports on the green death movement:

Amy Weik works at a bank in downtown Chicago. She’s also a big-time
environmentalist. She bikes to work, doesn’t eat meat, recycles and she composts.

“This is my worm bin. It’s a rectangular cube, which I keep my worms in that eat
my scrap vegetables. Mmm, look at that. Yum. Scrap paper, food that went bad.”

The environment is such a big part of Weik’s life, she’s not only interested in
living green.

She wants to die green.

“We’re Americans. We are wasteful and we consume. We think that we are
entitled to everything. So I’m entitled to using up this massive plot of land for the
rest of eternity. That’s ridiculous thinking. You know what I mean?”

So 11 years ago — when she was only 23 — Weik wrote her own will and shared it
with her mother.

Weik: “I can read part of it.”

Melby: “Sure, what does it say?”

Weik: “Zero products or services from funeral homes are to be utilized.”

Instead, Weik prefers her body to be chemically cremated. But that new, high-
tech process isn’t widely available yet. Her second choice is to be composted with
worms.

“If all efforts have been exhausted, but these two options are not available, please
bury me in a green burial ground, location unimportant.”

That second option leaves Weik’s mother — Linda Williams — confused.

“The second was composed with worms? When I read it today, my first reaction
was, oh my Gosh, she composts with worms in her kitchen. I hope she doesn’t
expect me to put her in the box!” (Laughs)

Weik sees lots of unnecessary waste in conventional burial practices. Caskets
constructed from wood or metal are used for a short time and then go right into
the ground. Most graveyards require the casket be placed inside a concrete burial
vault to prevent leaking, but most eventually leak anyway. Grave markers are
often made of granite. And cemeteries are usually manicured to perfection using
fertilizer and riding lawn mowers.

Green burial advocates prefer biodegradable caskets — or just a shroud — no
burial vault, no grave markers and no landscaping. They prefer natural
surroundings.

Weik is hoping to live long enough to see a cemetery in her town go green.

So far, that’s not happened.

But one organization is working on it.

“I don’t think many people really want many aspects of conventional death care. I
think they think it’s legally required.”

That’s Joe Sehee. He’s head of the Green Burial Council.

“Most Americans do not know that you can have a funeral with a viewing without
embalming. Most don’t know that you can transport a body across state lines
without having to embalm it. Most don’t know that burial vaults can be avoided,
for example, or that you can go into the grave with a shroud or nothing at all.”

The council has been busy certifying all kinds of earth-friendly death products,
but has been slow to find graveyards willing to ban concrete burial vaults and
minimize traditional landscaping.

That leaves Amy Weik wondering if she’s going to have rely on the worms in her
compost bin to dispose of her body.

For The Environment Report, I’m Todd Melby.

Related Links

Green Last Requests, Part Two

  • Steve Dawson is an undertaker trying to give people greener options (Photo by Todd Melby)

When businesses begin offering
earth-friendly alternatives to
traditional products, it often
takes a while for those items
to catch on. The funeral industry
is no exception. Todd Melby reports
on one undertaker’s attempt at
greening death:

Todd Melby and Diane Richard produced a documentary on green burial called “Death’s Footprint.” You can listen to it here .

Transcript

When businesses begin offering
earth-friendly alternatives to
traditional products, it often
takes a while for those items
to catch on. The funeral industry
is no exception. Todd Melby reports
on one undertaker’s attempt at
greening death:

Steve Dawson is an undertaker who lives above his funeral home business.
His backyard looks like many here in suburban Chicago. It’s full of cherry
trees and apple trees and he’s got one of those round, above ground
swimming pools. Next to the pool, there’s a small building that looks like a
two-car garage.

We step inside.

“This is the crematorium. This is a cremation retort. As you can see it’s a
fairly large machine.”

That retort is a big furnace. It’s also a big part of Dawson’s business here at
Sax-Tiedeman Funeral Home.

Dawson: “We have a body that has been dropped off here for cremation. If
this is bothering you because we have a body here, I will do what I can to
get the body out of the way.”

Melby: “No, I’m fine.”

Dawson: “We’ll go back over here and get this started.”

(sound of the crematory furnace)

“That starts out the blowers, which is a purging blower, to basically clear
out anything that might be in the way there.”

After the furnace starts, it takes about two hours to finish the process. Then
Dawson takes the remains over to a machine that sifts through what’s left.

Dawson: “What we do is we go through there and sort through the
cremated remains.”

Melby: “This is actually what happens at the end, obviously.”

Dawson: “Right.”

Dawson collects all the prosthetics, those titanium knee and hip joints, in a big
can nearby. They get recycled.

That’s important to Dawson. At home, he’s a passionate recycler of soda pop
cans, newspapers and other household items.

“My family calls me the recycling Nazi because I get after them to put it all gets
put in the recyling bin.”

On the job, he tries to be green too.

Dawson knows that cremation — an option chosen by nearly 1 in 2 Americans —
has environmental downsides. Many older people have mercury dental fillings.
During cremation, that cancer-causing toxin vaporizes and goes up into the
atmosphere. Heating up the cremation furnace also eats up energy.

Dawson is also a savvy businessman. He believes more Americans are going
to want green choices, even when buying death products.

That’s why he’s embraced green burial. Sax-Tiedemann is Chicago’s first —
and so far only — green-certified funeral home. So in addition to selling
baseball-themed urns and big wooden caskets, Dawson has other choices
too.

“In this area here, we have rental caskets and up on the top, these are e-caskets,
Eco-caskets. These are made out of bamboo and these are designed to be
biodegradable.”

Although most Jews and Muslims skip embalming, the procedure is still quite
popular among Christians. Green death advocates are opposed to embalming
because of the formaldehyde used in the process. So to get certified, Dawson had
to buy a new machine.

“This is a three-body cooler. Inside a three-body cooler, this is what we use to be
able to hold remains without embalming. The temperature in the cooler is kept at
roughly 42 degrees. That’s enough to be able to slow down the decomposition
process.”

(funeral music)

A chilled body will hold for a day or so, which is usually enough time for friends
and family to gather and say good-bye. As baby boomers begin dying in big
numbers, Dawson expects more of them to choose green burial.

For The Environment Report, I’m Todd Melby.

Related Links

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.

Related Links

Botulism and the Beach

  • The beach looks beautiful... until you stumble on dead birds and fish killed by Type E botulism. (Photo by Rebecca Williams)

A deadly toxin is spreading across
the Great Lakes, killing fish and birds.
Rebecca Williams reports scientists are
trying to put the puzzle together as quickly
as they can:

Transcript

A deadly toxin is spreading across
the Great Lakes, killing fish and birds.
Rebecca Williams reports scientists are
trying to put the puzzle together as quickly
as they can:

(sound of waves lapping the beach)

It’s one of those perfect beach days. Not too hot, not too crowded. Everything’s
just right.

Unless you don’t like rotting fish and dead birds full of maggots.

Hunter Brower is hanging out at this Lake Michigan beach. He says he’s seen a
lot of dead gulls here in recent years.

“It’s disgusting. We’re out here to enjoy our time and it’s just not right.”

The birds and fish are being killed by Type E botulism. Basically, it’s food
poisoning. For about a decade now, botulism has been killing huge numbers of
birds in the Great Lakes.

We’re talking about more than 75,000 birds – and scientists think that’s probably
a very conservative estimate. That’s because birds could be dying and not
reaching the shore. And it’s very hard to know how many fish are getting killed.
They’re harder to diagnose.

“It’s really one of nature’s most potent toxins.”

Mark Breederland is with Michigan SeaGrant. He says some studies show the
toxin can paralyze fish.

“They can actually lose their orientation and be bobbing up and down vertically
and that would be easy pickin’s if you’re a loon.”

Loons and other birds eat those poisoned fish, or, even grosser, they’ll eat the
maggots in dead birds on the beach, and get sick. The toxin can make birds lose
control of their neck muscles. Their heads fall in the water and they drown.

Beaches full of dead fish and birds aren’t great for tourism. But scientists are
more worried about what this means for endangered species – from the giant lake
sturgeon to the tiny piping plover.

Mark Breederland says they’re also worried about the thousands of migratory
birds that get killed on their way south in the fall.

“They’re just driving down their migratory highway, pulling over for a rest stop to
get something to eat, and that’s their last and final resting spot.”

So scientists are trying to pin down what’s going on.

There’s one main hypothesis. It involves some nasty little critters: invasive zebra
mussels and their cousins, the quaggas. They got into the lakes in the ballast
water of foreign ships.

Both mussels suck in lake water and filter it. They’ve made the lakes a lot clearer
than they used to be.

The clearer water means more sunlight can reach the lake bottom, and that
kick-starts algae growth. When the algae die, it sucks oxygen out of the water.
And, all of that is perfect for a bacterium that produces the botulism toxin to go forth
and multiply.

Okay, now, remember those pesky mussels? Scientists suspect they can take in
the toxin but they’re not affected by it. But fish that eat the mussels get sick.

One fish in particular loves to eat mussels. It’s the invasive round goby. And
there are lots and lots of gobies in the Lakes. That could mean lots of poisoned
snacks for bigger fish and birds.

Researchers have a bad feeling about all this, and they’re trying to confirm their
hunches.

(sound of boat engine starting up)

Brenda Moraska LaFrancois is headed out on Lake Michigan to investigate. She’s
part of a team that’s collecting samples from the lake bottom.

She says this is a tough mystery to unravel.

“These are really complicated systems and unfortunately they’re continuing to
change.”

As soon as scientists think they have a handle on what’s going on, some new
invader gets in and messes everything up again. So it’s really hard to know what
could be done to stop the outbreaks.

The experts say, if you go to the beach, it’s safe to swim. But you shouldn’t eat any
fish or waterfowl that seem sick.

Your local wildlife managers might tell you: don’t touch it, but get something to
bury the dead animal down in the sand, so other birds won’t feed on it and spread the
toxin.

For The Environment Report, I’m Rebecca Williams.

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