One of the biggest cities in the U.S. has released a plan to protect nearly 5,000 acres of natural habitat within city limits. Rebecca Williams has more:
Transcript
One of the biggest cities in the US has released a plan to protect nearly
5,000 acres of natural habitat within city limits. Rebecca Williams
has more:
Cities are some of the last places you’d expect to find good wildlife
habitat. But Chicago officials have mapped out 100 habitat sites within the
city. These are remnants of prairie, savanna, dunes and wetlands that
either escaped development or have potential to be restored.
Kathy Dickhut is with Chicago’s planning department. She says the city
needed the habitat plan to maintain green spaces for migratory birds and
other wildlife.
“Unless you know that you have all these things you’re kind of hit or
miss-managing things and you can’t really manage to improve the system.”
Dickhut says when the city recently revamped its zoning codes, these habitat
areas were zoned as natural areas. That means they’ll be set aside strictly
as wildlife habitat: no buildings or ball fields can be put on the same
spaces.
The U.S. Forest Service is loosening rules to deal with
predators. The new rules would allow livestock owners and others to hunt down wolves, bears, coyotes and mountain lions using trucks, helicopters and cyanide-laced traps. The GLRC’s Lester Graham
reports:
Transcript
The U.S. Forest service is loosening rules to deal with predators. The new rules would
allow livestock owners and others to hunt down wolves, bears, coyotes and mountain
lions using trucks, helicopters and cyanide-laced traps. The GLRC’s Lester Graham
reports:
The Forest Service says the proposed new rules simply clear up a program that’s
designed to get rid of nuisance animals that prey on livestock. Erik Ryberg is with the
Center for Biological Diversity. He says the new rules permit killing any local predator
instead of just the animal that’s killing livestock. They would also allow off-road
vehicles and even helicopters to chase down the animals on federal land, and they would
allow baited traps that explode with poison gas:
“These are buried cyanide bombs that when triggered release an explosive cloud of
sodium cyanide crystals and kill whatever has triggered it. They’re very dangerous both
to domestic pets, to children and to people. They certainly don’t belong in federally-
protected wilderness areas.”
The current rules state that the agency is to “consider the benefits of predator species in
the ecosystem” before it starts killing any predators.
Roger LaBine winnows the wild rice. (Photo by Michael Loukinen, Up North Films)
The Ojibwe tribe harvest rice on Lac Vieux Desert, but doing so can lower water levels and create muddy shorelines. (Photo by Michael Loukinen, Up North Films)
Since European settlers first came to this country they have had serious conflicts with Native Americans. The GLRC’s Sandy Hausman reports on one modern-day dispute between a Native American tribe and communities in the upper Midwest:
Transcript
Since European settlers first came to this country they have had serious conflicts with
Native Americans. The GLRC’s Sandy Hausman reports on one modern-day dispute
between a Native American tribe and communities in the upper Midwest:
(Sound of Ojibwe music)
The Ojibwe tribe first came to the north woods of Michigan and Wisconsin hundreds of
years ago. They say their migration from the east coast was guided by prophets. Those
prophets told them to keep moving until they came to a place where food grows on the
water. Roger Labine is a spiritual leader with the tribe. He says that food was wild rice:
“This was a gift to us. This is something that is very, very sacred to us. This is very
important, just as our language. This is part of who we are.”
For hundreds of years, wild rice was a staple of the tribe’s diet, but starting in the 1930s,
private construction of hydroelectric dams pushed water levels in rice growing areas up.
High water killed most of the plants and took a toll on wildlife. Bob Evans is a biologist
with the U.S. Forest Service. He says fish, bird and insect populations dropped
dramatically:
“Black tern is a declining, threatened species that is known to use wild rice beds,
Trumpeter swans. They’re a big user of rice beds. Um, just a whole lot of plants and
animals. It’s really a whole ecosystem in itself.”
So in 1995, the tribe, the U.S. Forest Service and several other government agencies
demanded a change. A year later, the federal government ordered dam operators to drop
their maximum water levels by 9 inches. The dam owners appealed that decision, but in
2001 a federal court ruled against them.
That fall, the Ojibwe who live on Lac Vieux
Desert harvested nearly 16 acres of wild rice and this summer, the tribe is tending more than 55 acres.
But the resurgence of rice beds comes at a price. Lower lake levels have left docks in this
boating community high and dry, created muddy shorelines and made long-time residents
and summer boaters angry:
“I used to come here and dock all the time. We picnicked here. I had to walk in 50 feet,
because there wasn’t enough water to float a pontoon, and it’s that way all around the
lake.”
Ken Lacount is president of the Lac Vieux Desert homeowners association. He first
came here in the 1940s and doesn’t see why his cultural traditions should take a backseat
to those of the Ojibwe:
“My grandfather built one of the first resorts. I fished in Rice Bay my entire life. That
was his favorite place to take me.”
Lacount is bitter. He and his neighbors feel powerless to change the situation, since a
federal court has ruled for the Ojibwa. Defenders of that decision say water levels are
especially low because of a prolonged drought in region. When that ends, they predict
lake levels will rise, and homeowners on Lac Vieux Desert will be happier.
(Sound of paddling)
Such conflicts are nothing new. Ron Seeley is a reporter for the Wisconsin State Journal. He’s covered Native American issues for more than 20 years. Paddling through the rice beds, he recalls an earlier battle
over fishing rights. In the late 80s, a court ruled the Ojibwe were entitled by treaty to
spear fish each spring. Local fishermen worried the practice would destroy their industry:
“Sometimes thousands of people would show up at the landings on a spring night. Tribal
members from all over the upper Midwest would come to support the spearers and drum
and chant. The anti-Indian forces were arrested for using wrist rockets or real powerful
sling shots to shoot pellets at the tribal members while they were out spearing. It was a
violent time up here.”
As court after court upheld the rights of native spear fishermen, and as commercial
fishermen continue to prosper, hostilities subsided and now, as the Native Americans prepare for
their biggest rice harvest in more than 50 years, the Ojibwe hope that the controversy over water levels
will also die down. Tribal leader Roger Labine says wild rice is a symbol of the Ojibwe’s survival:
“This is an endangered species. It’s something that we’re fighting to save, just like the
eagle, just like the wolf. We were put here to care for Mother Earth and all the gifts that
the creator gave us.”
And having won the first battle to restore rice beds, Labine is hoping to secure even
greater protection for these wetlands by asking the federal government to declare the rice
beds historic.
Asian carp are one of the invasive species featured in the exhibits in your local museums. (Photo courtesy of USFWS)
The zebra mussel is another invasive species that is hurting the Great Lakes' natural food chain. (Photo courtesy of USGS)
Big, public aquariums spend a lot of money to make fish look like they’re at home in the wild. But lately some aquariums are showing fish that are out of place. The GLRC’s Shawn Allee looks at one aquarium’s effort to give them the spotlight, too:
Transcript
Big, public aquariums spend a lot of money to make fish look like
they’re at home in the wild, but lately some aquariums are showing fish
that are out of place. The GLRC’s Shawn Allee looks at one aquarium’s
effort to give them the spotlight, too:
The federal government’s spending millions to keep Asian Carp out of
the Great Lakes. Biologists worry Asian Carp could devastate the lakes’
ecosystem. Recently, though, several carp were brought within sight of
the Great Lakes, and biologists are happy about it.
Chicago’s Shedd Aquarium is on the shore of Lake Michigan. It’s
holding an exhibit of Asian Carp and other alien invasive species.
Curator Kurt Hettinger captured the aquarium’s carp during a trip on an
Illinois river.
“They’re literally jumping, sometimes over the bow of the boat,
sometimes smacking into the side of the boat. I just looked behind me
and was amazed to see all these fish jumping in the wake of the boat, and
to this day, I’m still stunned by this.”
And Hettinger’s more than just stunned. He’s worried.
Asian Carp are an invasive species, basically … pests that crowd out
native fish, and that river where he caught them hooks up to Lake
Michigan.
Again, Asian carp haven’t made it to the Great Lakes, but more than one
hundred and sixty other invasive species have arrived and are breeding
quickly.
One example’s the zebra mussel. At first, scientists worried about how
much money it could cost us. Zebra mussels multiply so fast they can
block pipes that carry cooling water to power plants. But now, we know
the zebra mussel’s disrupting the lakes’ natural food chain.
In other words, invasive species are a huge economic and ecological
nuisance. That’s why the Shedd Aquarium started the exhibit.
“The public I think has seen enough stories about the damages and the
spread and the harmfulness, but those stories are not very often coupled
with solutions.”
That’s ecologist David Lodge. He says the exhibit tries to show how
people spread these species around. Lodge points to one exhibit tank. It
looks like a typical backyard water garden. It’s decked out with a small
fishpond, water lilies, even a little fountain shaped like an angel. It looks
pretty innocent, but Lodge says plants and fish you buy for your own
water garden could be invasive species.
“All those plants and animals that are put outside, then have an
opportunity to spread. Now, it doesn’t happen very often, but with the
number of water gardens, it happens enough so that they are a serious
threat to the spread of species.”
Birds or even a quick flood could move seeds or minnows from your
garden to a nearby lake or river.
The Shedd Aquarium’s not alone in spotlighting invasive species.
Several aquariums and science museums are also getting on board. For example one in
Florida shows how invasive species have infested the Everglades.
Shedd curator George Parsons went far and wide for inspiration.
“I was in Japan last year when we were planning this, and I just
happened to stumble across one of their aquariums and they had an
invasive species exhibit, except that they were talking about large mouth
bass and blue gill. You know, something that is our natives. So, it was
kind of ironic to see that out there. It was kind of neat.”
Like us, the Japanese take invasive species seriously. Back in 1999 the
humble Midwestern Blue Gill created a national uproar. Turns out, they
had taken over ponds throughout the Emperor’s palace, and how did the
bluegill get to Japan?
Probably as a gift from a former Chicago mayor. Apparently, the mayor
thought blue gill might make nice sport fishing in Japan. It was an
innocent mistake, but it’s just the kind of mishap biologists want all of us
to avoid from now on.
Eurasian Watermilfoil is one of the non-native species that has
invaded inland lakes. (Photo courtesy of National Park Service)
An up-close look at Eurasian Watermilfoil. (Photo courtesy of the
Washington State Department of Ecology)
Invasive plants, fish and other creatures are threatening many inland lakes. Environmentalists and property owners are trying to stop the spread…before the invaders dramatically alter the smaller bodies of water. The Great Lakes Radio Consortium’s Ann-Elise Henzl reports:
Transcript
Invasive plants, fish and other creatures are threatening many inland
lakes. Evironmentalists and property owners are trying to stop the
spread…before the invaders dramatically alter the smaller bodies of
water. The Great Lakes Radio Consortium’s Ann-Elise Henzl reports:
It’s strange to think that plants and animals from Europe, Asia and Africa
are living in small lakes in the Midwest. Boaters have taken invaders
there…after picking them up in the Great Lakes.
The big lakes are home to more than 160 aquatic invasive species,
including Eurasian Watermilfoil. The stringy plant grows in thick
clusters that get up to 12 feet tall.
“I have seen lakes where if you fell out of the boat in these massive
weeds and you weren’t wearing a life jacket, I don’t care how good a
swimmer you are, you would sink. You can not struggle your way
through these thick entanglements of weeds.”
Ted Ritter leads an effort to reduce aquatic invasive species…in
Wisconsin’s Vilas County.
(Sound of pontoon motor)
On one afternoon he takes his pontoon boat on a lake that had an
infestation of Eurasian Watermilfoil.
“It is a very aggressive plant and it has no natural predators to control its
growth, it grows up to two inches a day.”
When Eurasian Watermilfoil finds conditions it likes, it takes over
quickly. A piece as small as two inches can break off, and float away to
create a new plant.
Eurasian Watermilfoil is widespread in northern Michigan… northern
Wisconsin and other places. It’s one of dozens of aquatic invasive
species on the move in the region.
One of the worst invaders is zebra mussels. They can ravage a lake’s
ecosystem.
(Sound of motor boat)
So far, they’ve made it to just one lake in northern Wisconsin. Mike
Preul with the Lake Superior Chippewa scuba dives there, to count the
mussels. Three years ago, he found 7 adults per square meter. This year,
he counted more than 14-hundred:
“They’re still increasing. What they’ve seen in other systems is that just
like with any other exotic species they’ll come in, the population will
explode, they’ll kind of eat themselves out of house and home, and then
they’ll come down to a level and reach a steady state.”
No method has been discovered to get rid of zebra mussels, but there are
ways to control some invaders.
Herbicides can be used to kill Eurasian Watermilfoil, and some property
owners chip in to buy aquatic insects to kill the plants.
Les Schramm did that on his local lake:
“As the larvae hatches it burrows into the stem of the Eurasian
Watermilfoil and sort of eats out the center vascular part, and it falls over
and dies.”
People fighting aquatic invasive species say it’s like fighting weeds in a
garden — the work never stops and it can be expensive.
Ted Ritter of Vilas County says it costs thousands of dollars to treat a
lake once. So, often people do nothing.
Ritter says that can hurt the environment. He says it can also threaten the
economy, in areas like northern Wisconsin that rely on tourism.
Ritter says the invaders can reduce the appeal of a lake. He mentions a
plant called “curly leaf pondweed.” When it dies in the middle of
summer, it creates algae blooms that look like slimy green pillows:
“When people arrive at resorts and they look out and they see that very
unappealing lake they say ‘I’m not staying here,’ and they go somewhere
else. When realtors bring prospective buyers out to look at a property,
people get out of their car and they go right to the lake and they say ‘oh
my, I’m not even interested in looking at the house. This lake is
horrible.'”
Because it’s so difficult to control invasive species, Ritter and others
fighting the invaders focus on prevention.
Local volunteers and workers from the Wisconsin Department of Natural
Resources spend hours at boat landings. They urge people to clean their
boats, trailers, and fishing gear thoroughly when going from lake to lake,
that can keep unwanted plants and creatures from traveling along.
Cleaning up the Great Lakes has become part of the environment platform for at least one party in Canada’s national election campaign. Canadian Prime minister Paul Martin’s liberals are promising to spend one billion dollars toward cleaning up the Great Lakes and St. Lawrence Seaway. The Great Lakes Radio Consortium’s Dan Karpenchuk reports:
Transcript
Cleaning up the Great Lakes has become part of the environment
platform for at least one party in Canada’s national election campaign.
Canadian Prime minister Paul Martin’s liberals are promising to spend
one billion dollars toward cleaning up the Great Lakes and St. Lawrence
Seaway. The Great Lakes Radio Consortium’s Dan Karpenchuk reports:
Paul Martin says the pledge is another aspect of the Liberal party’s green
plan. Martin says the one billion dollars would be spent over ten years in
an effort to clean up toxic hot spots along the world’s largest freshwater
ecosystem.
“By taking action we will better protect our water and our wildlife, we’ll
make our waterfronts more vibrant and healthy, and we will ensure that
the revitalization of these ecosystems stands out as our collective
legacy.”
Martin says half the money, about five hundred million dollars, would be
earmarked for sites that have been used for decades as a dump for
industrial and household waste. Some of the money would also go to
assessing ecological threats posed by pharmaceuticals and other
pollutants, and researching the effects of human action on these
ecosystems.
New federal money has been made available to several Sea Grant programs in the region. These programs fund university research in the aquatic sciences. This new funding aims to make scientific research accessible to kids and teachers. The Great Lakes Radio Consortium’s Chuck Quirmbach reports:
Transcript
New federal money has been made available to several Sea Grant
programs in the region. These programs fund university research in the
aquatic sciences. This new funding aims to make scientific research
accessible to kids and teachers. The Great Lakes Radio Consortium’s
Chuck Quirmbach reports:
The National Science Foundation and the National Oceanic and
Atmospheric Administration have given more than two million dollars to
the university-based Sea Grant programs.
Over the next five years, a Sea Grant run center called, Great Lakes
COSEE, will help researchers tailor their findings for educators and
school kids. Sea Grant official Jim Lubner says there can be many
paybacks.
“It’s important for the health of our ecosystem to have a literate public, a
literate electorate that understands science that has had some experience
with their natural resources.”
Lubner says the Great Lakes Center will also help teach about oceans, as
he says there are common issues like wetlands destruction, and invasive
species.
The new Sea Grant effort will soon have its own website, and there will
be workshops around the Great Lakes. The first will be offered to
teachers this summer.
Interns for Presque Isle State Park in Erie, Pennsylvania walk along a Lake Erie beach picking up dead birds. (Photo by Lester Graham)
A poisoned seagull on a Lake Erie beach. (Photo by Lester Graham)
Two interns pick up a dead seagull from a beach on Lake Erie. (Photo by Lester Graham
Researchers are beginning to understand what’s killing thousands of
Great Lakes shorebirds. It might be part of a larger problem indirectly
caused by humans. The Great Lakes Radio Consortium’s Lester Graham
reports:
Transcript
We’ve been bringing you reports from the series, ‘Ten Threats to the Great Lakes’ which is now looking at the threat to beaches. Our guide through the series is Lester Graham. He reports that scientists are beginning to understand what’s killing thousands of Great Lakes shorebirds. It might be part of a larger problem indirectly caused by humans.
Researchers are beginning to understand what’s killing thousands of
Great Lakes shorebirds. It might be part of a larger problem indirectly
caused by humans. The Great Lakes Radio Consortium’s Lester Graham
reports:
Along parts of Lake Erie, Lake Ontario, and Lake Huron, large numbers
of dead birds and fish are washing up on shore. If they’re left there, the
disease that killed them can be passed on to other wildlife. That’s why
park officials such as Mike Mumau at Presque Isle State Park at Erie,
Pennsylvania ask their staff to watch out for the dead carcasses.
“Our interns do a great job. They’re the eyes of the staff that are out. So,
there’s probably three to four days a week that they’re out on the
beaches, checking to see if they have anything.”
Since 1998, untold numbers of fish and sometimes hundreds of dead
birds a year have washed up on just these eight miles of Lake Erie beach.
Eventually, researchers figured out the problem: type “E” botulism. It
slowly paralyzes the birds until the respiratory system shuts down. Most
of them don’t make it that long. They get so weak they can’t hold their
heads up out of the water and they drown.
(Sounds of walking and shovel)
Leslie Jones and her fellow interns are headed out to an area to pick up
some dead seagulls on the beach.
“When we’re out here doing migratory bird studies, we might see some
and then we pick them up as soon as possible. A lot of times, we get
radioed from different people like lifeguards and they have us come out
and pick them up so that the disease doesn’t spread throughout the rest of
the ecosystem.”
They find five dead birds rotting on the beach. They bury the maggots
because they could carry the botulism toxin and other birds might eat the
maggots. They shovel the bird carcass into a black plastic garbage bag.
“If they’re very fresh, this one, obviously not very fresh, but, if we get a
fresh one, we actually freeze them and they’re sent off to be tested
botulism, but, something like this we’ll just bag up until we can get them
incinerated to get rid of all the disease.”
The fresh carcasses are shipped to the National Wildlife Health Center in
Madison, Wisconsin.
There, Grace McLaughlin is among the researchers who are beginning to
put the puzzle together.
Here’s what they think is happening. The invasive species zebra mussels
and quagga mussels create huge mussel beds that begin a complicated
biological phenomenon. Organic matter collects there, and then decays. It
lowers the oxygen level in the immediate area of the mussel beds. Type
“E” botulism spores occur naturally, but when the oxygen level goes
down, they begin reproducing like crazy. The waste they produce is the
toxin.
“That toxin will accumulate in the organic matter as well as in the water
in the immediate vicinity of the mussel beds. As the mussels do their
filter feeding, they will accumulate the toxin in their tissue. They are not
susceptible to the toxin. However, when the fish start coming down
there and eating the mussels, they become intoxicated, lose their ability
to swim properly and become easy prey for the birds that come in.”
The fish that feeds on the mussels the most is another invasive species,
the round goby. Researchers made the connection when they noticed the
botulism started being a problem shortly after round gobies arrived in big
numbers.
The type “E” botulism toxin has killed tens-of-thousands of birds such as
cormorants, terns, loons, ducks, and seagulls.
Back at Presque Isle State Park, Mike Mumau says it’s terrible to see so
many birds die.
“We just do our best on our end to stop the botulism cycle. When we
can, provide samples, and also, keep it a positive recreational experience
for all our visitors. They don’t want to see birds decomposing and
rotting out on the beaches, so we’re pretty diligent with that.”
Researchers say that’s about the best that can be done. Since ocean-
going vessels brought zebra mussels, quagga mussels, and round gobies
to the Great Lakes, all three of the invasive species have flourished. It
will likely be a long time before we’ll ever begin to understand the full
extent of the damage to the native wildlife of the lakes.
Air deposition is when air pollution settles out into lakes and streams and becomes water pollution. (Photo by Lester Graham)
We’re continuing our series, Ten Threats to the Great Lakes. Our guide through the series is Lester Graham. In this report he explains one of the threats that experts identified is air pollution that finds its way into the Great Lakes:
Transcript
We’re continuing our series ‘Ten Threats to the Great Lakes’. Our guide through the
series is Lester Graham. In this report he explains one of the threats is air pollution that
finds its way into the Great Lakes:
It’s called ‘Air Deposition.” Melissa Hulting is a scientist at U.S. Environmental
Protection Agency. We asked her just what that means:
“Air deposition simply is just when materials, in this case pollutants, are transferred from
the air to the water. So, pollutants in particles can fall into the water. Pollutants in rain
can fall into the water, or pollutants in a gas form can be absorbed into the water.”
So, it’s things like pesticides that evaporate from farm fields and end up in the rain over
the Great Lakes. PCBs in soil do the same. Dioxins from backyard burning end up in the
air, and then are carried to the lakes
One of the pollutants that causes a significant problem in the Great Lakes is mercury. It
gets in the water. Then it contaminates the fish. We eat the fish and mercury gets in us.
It can cause babies to be born with smaller heads. It can cause nervous system damage
and lower IQ in small children if women of childbearing age or children eat too much
fish.
One of the notable sources of mercury is from power plants that burn coal.
(Sound of coal car)
Railroad cars like this one empty their tons of coal at power plants all across the nation.
More than half of the electricity in the nation is produced at coal-burning power plants,
and with a 250-year supply, coal is going to be the primary fuel for a while.
One coal producing state is acknowledging that mercury is a problem. Doug Scott is the
Director of the Illinois Environmental Protection Agency. He says coal is important to
the energy mix, but we need to reduce pollutants such as mercury as much as possible.
“The policy of the state has been to try to work with the power plants to try to burn
Illinois coal as cleanly as you can. Now, that means a lot more equipment and a lot more
things that they have to do to be able to make that work, but we’re committed to trying to
do both those things.”
And, Scott says the federal government’s mercury reduction program does not go far
enough soon enough, but the electric utility industry disagrees.
Dan Riedinger is spokesman for the Edison Electric Institute, a power industry trade
organization. Riedinger says, really reducing mercury emissions at power plants just
won’t make that much difference.
“Power plants contribute relatively little to the deposition of mercury in any one area of
the country, including the Great Lakes, and no matter how much we reduce mercury
emissions from power plants in the Great Lakes Region, it’s really not going to have a
discernable impact in terms of improving the levels of mercury in the fish people want to eat.”
“Relatively little? Now, that flies in the face of everything I’ve read so far. Everything
I’ve read, indicates coal-fired power plants are a significant contributor to the mercury
issue in the Great Lakes and other places.”
“It’s really not quite that simple. Power plants are a significant source of mercury
emissions here in the United States, but most of the mercury that lands in the Great
Lakes, particularly in the western Great Lakes is going to come from sources outside of
the United States.”
Well, it’s not quite that simple either. The U.S. EPA’s Melissa Hulting agrees some of
the mercury in the Great Lakes comes from foreign sources, but recent studies show
some mercury settles out fairly close to the smokestacks. She says you can blame both
for the mercury in your fish.
“You blame the sources that are close by and you blame the sources that are far away.
The bottom line with mercury is that we’re all in this together and it’s going to take
everybody reducing their sources to take care of the problem.”
Taking care of the problem is going to take some money, and that will mean we’ll all pay in
higher utility bills. The Illinois EPA’s Doug Scott says it’ll be worth it if we can reduce
mercury exposure to people.
“We know what the issue is. It’s not a matter of us not understanding the connection
between mercury and what happens in fish, and then what happens in humans as a result
of that. We understand that. We know it, and we also know to a great degree what we
can do to try to correct the problem, and so, it’s a matter of just going out and doing it,
and so I’d like to think it’s something that can be done sooner rather than later.”
And since Great Lakes fish have elevated levels of mercury, sooner would be good.
It’ll take a while for the mercury already there to work its way out of the ecosystem and
return to more normal levels.
Researchers measuring an American Eel. (Courtesy of United States Department of Agriculture)
Pollution and invasive species are killing off or crowding out native plants and animals,
but for some species, it’s not just one problem, but many problems that are hurting them.
Few species illustrate the dangers of the multiple threats to the Great Lakes as the American
eel. Only fifty years ago, the snake-like fish accounted for half of the biomass in Lake
Ontario. Today, it has all but disappeared. David Sommerstein has that story:
Transcript
In our next report in the series Ten Threats to the Great Lakes we hear about native
species that are in trouble. Our guide in the series is Lester Graham. He says some fish
and organisms are disappearing.
Pollution and invasive species are killing off or crowding out native plants and animals,
but for some species, it’s not just one problem, but many problems that are hurting them.
Few species illustrate the dangers of the multiple threats to the Great Lakes as the American
eel. Only fifty years ago, the snake-like fish accounted for half of the biomass in Lake
Ontario. Today, it has all but disappeared. David Sommerstein has that story:
Before you say, who cares about a slimy critter like an eel, eels are amazing. They spawn
in the Sargasso Sea, the Bermuda Triangle, but no one’s ever caught them in the act.
After they’re born, they’re like tiny glassy leaves. They float thousands of miles north
and west on ocean currents. Then, they wiggle up the St. Lawrence River and into the
Great Lakes. They live up to 20 years in fresh water before they start the long journey to
the Sargasso to spawn.
The problem is their offspring are not coming back. People are worried about the eel, and
those who relied on it for a living feel like they’re disappearing too.
(Sound of waves)
Just ask fisherman John Rorabeck. He grew up here by the lighthouse on Point Traverse,
a peninsula that juts out into northeastern Lake Ontario.
Rorabeck’s been fishing these waters for more than 30 years. Eels were his prime catch.
He points past the lighthouse.
“I remember when I started fishing there were nights on that south shore, the most fish
that would be eels at certain times and there was literally tons of them on that south
shore. Now, you could go back there and you’ll find nothing.”
Rorabeck stopped fishing eels several years ago because it just wasn’t worth it. Now he
dedicates his fishing time to science. He catches specimens for leading eel expert John
Casselman, who examines them in his lab.
“It is truly a crisis. A crisis of concern.”
Casselman’s a scientist at Queens University in Kingston, Ontario. In 1980, at a point on
the St. Lawrence River in mid-summer, he counted more than 25,000 eels a day. Now
there are as few as 20 a day.
Casselman ticks off a list of causes. It sounds like a who’s who of environmental threats
to the Great Lakes – over fishing, dammed up rivers, erosion, pollution, invasive species,
climate change. If scientists could sift out how all the factors relate, they could take a big
step in better understanding the Great Lakes delicate ecosystem.
The problem is, Casselman says, there’s no time to wait. In 2003, eel experts from 18
countries made an unusual statement. In what they called the Quebec Declaration of
Concern, they urged more action, not more science.
“I’m a research scientist, and of course I love data. At this point, you don’t want me.
Don’t ask me to explain what’s going on here because by the time I get it figured out, it
may be too late.”
People are starting to do something about it, Casselman says. Several U.S. agencies are
considering giving the eel “rare and endangered” status. More money is going toward
research for fish ladders over dams.
Marc Gaden is spokesman for the Great Lakes Fishery Commission.
“We’re committing ourselves, our resources to working to make the recovery of the
species a reality.”
The province of Ontario has closed the eel fishery in its waters for the foreseeable future.
(Sound up at beach)
Fisherman John Rorabeck supports that plan. He stares out across the waters he’s
trawled for decades. He says he’s behind anything to bring the eel back for future
generations.
“And hopefully we can, but I don’t expect to see it in my time. When I…[crying]…when I
think of all the times that we’ve had out in the lake and my forefathers and see what’s
happening here, it breaks you down.”
Rorabeck says when he thinks of the eel nearing extinction, he feels like he and his way
of life are becoming extinct too.
