Tag: critter

Furry Critters and Chanel No.5

  • Jeff Wilson and Dan Haskell are trapping pine martens in Minnesota for relocation to northern Wisconsin. (Photo by Barbara Jean Johnson)

There are places where some wildlife
that once thrived, are now gone. In
Wisconsin, the Pine Marten has been
wiped out. The shy animal looks a bit
like a ferret. Pine Martens are members
of the weasel family. Barbara Jean Johnson
went out with researchers to see how
they’re bringing Pine Martens back to
northern Wisconsin:

Transcript

There are places where some wildlife
that once thrived, are now gone. In
Wisconsin, the Pine Marten has been
wiped out. The shy animal looks a bit
like a ferret. Pine Martens are members
of the weasel family. Barbara Jean Johnson
went out with researchers to see how
they’re bringing Pine Martens back to
northern Wisconsin:

You probably have never seen a pine marten. But I’m spending the day with two guys who spend weeks at a time looking for them. They work for the Wisconsin DNR. We’re actually in a county in northern Minnesota. We’re crammed into a Ford Ranger pickup, driving on the back roads to check trap lines. We’re looking for Pine Martens in Minnesota that will be released in northern Wisconsin.

Pine Marten’s were wiped out or extirpated in Wisconsin over the last hundred years. The Marten’s were in trouble once European settlers moved in. A combination of forest fires reduced animal habitat. Already too many of the animals were trapped for their pelts. But then the Great Depression hit.

“Trapping was a valuable commodity. Fur prices were high and many farmers and farm boys feed their families off their trap lines, and given that there’re weren’t many regulations, or limited regulations, and the high value, I don’t doubt that they over harvested, as well.”

That’s Jeff Wilson. He’s on the frontlines of this varmint capture mission. He and his partner Dan Haskell are seeking to right some of the past wrongs. Dan and Jeff are fun guys. They love the wilderness and they like to chat. The only downside to our little expedition is the smell that permeates the cab. I didn’t say anything, but it smells like skunk.

“Now you do admit, you do smell a little skunk essence in here, do you not? We do our best you know. we shower everyday, but we have been getting a few looks at the grocery stores and the places we’ve been shopping in your Grand Marais community. We hope we haven’t offended anybody.”

These guys us a skunk scent to lure Pine Martens to live-traps. They love the scent. And, they’re not the only ones. Apparently this skunk compound is used in the famous French perfume Chanel No. 5. Some of their colleagues have actually used the perfume as a lure when trapping lynx in Canada.

“However, Chanel No. 5 is like $90 an ounce. (laughs) So we don’t use it.”

Dan and Jeff don’t want just any kind of marten. They already have all the males they need. They want females. As we make our way from trap to trap we catch male after male – seriously, five males – and no females.

“My wife says it’s because they are smarter, but I think it’s because they have a much smaller home range – maybe a half a mile to a mile. In contrast, males cover around two to three miles. You’re just going to get more males. If you set a trap line and spread it out, there’s going to be about two or three times more possibility of a male capture than a female capture.”

(sound of animal screaming)

Catch six, and we’re all hoping it’s a girl. But they have to check to make sure. Marten’s may be small, but they’re certainly not known for being cuddly.

Jeff coaxes the marten head-first into the corner of a laundry bag. He puts a tight hold on its head while Dan peels back the bag to check the genitalia. Once they know they’ve captured a female, they sedate her and run through a series of basic tests to collect data. They also give each animal they take home a name.

“This one is obviously going to be called ‘Barbara’ after you, our colleague. (laughter) You’re a breath of fresh air – literally. (laughter)”

Yeah, they’re a little lonely out in the field. Not a lot of people spend much time with them – smelling a little like skunk and all. And they’re away from home for extended periods of time. But, all in all, they both enjoy what they do and find real meaning in it.

“We can restore what we’ve mismanaged in the past and it’s inspirational for me to see there’s no doubt there’s a niche for this animal there. This animal is a really important part of biological diversity and I’m really happy I can participate in that.” For The Environment Report, I’m Barbara Jean Johnson.

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New Ship Has Balance Without Ballast

  • A diagram of the ballast-free ship (Photo courtesy of Professor Michael Parsons)

Cargo ships move sea life around the world.
Moving aquatic life from one port to another can cause
environmental havoc. Lester Graham reports there’s a
new idea that could nearly eliminate the problem of
transporting sea life to foreign ports:

Transcript

Cargo ships move sea life around the world.
Moving aquatic life from one port to another can cause
environmental havoc. Lester Graham reports there’s a
new idea that could nearly eliminate the problem of
transporting sea life to foreign ports:

There is an invasion of every major port on the globe.

“Today, the world’s shores are under attack. Armies of aliens are secretly invading our coasts.”

If this video, Invaders from the Sea, from the International Maritime
Organization sounds a little over-dramatic, it’s really not. Invaders from far-flung
corners of the world are brought in by commerce. In their travels, cargo ships pick up the
hitchhikers.

Those hitchhikers can be fish, mussels – aquatic bugs of all kinds. They can become
pests. Out-compete native species for food and space. They can destroy the
native ecosystems and often damage the economic well-being of people.

Here’s how it happens. Ocean-going cargo ships dock at a foreign port. They pump in
water for ballast to keep the ship stable. They also pump in some of the living things in
the water. When they arrive at the destination port, they can pump out that water and
the critters that were sucked up with it.

In the US, ports from Chesapeake Bay to San Francisco have been invaded. But,
the Great Lakes have been hit especially hard by invasive species.

Michael Parsons is a professor of naval architecture at the University of Michigan. He
says when foreign ships were able to come in from the Atlantic and travel as far as
inland as Duluth, Minnesota; they brought a lot of invaders with them.

“With the opening of the St. Lawrence Seaway in the ‘50’s, that led to increased
introduction of non-indigenous species such as the zebra mussel, and the round goby, and
the ruffe, and the various smaller creatures that have been brought in to the Great Lakes.”

Those creatures have damaged the ecosystem of the Great Lakes. And they’ve cost the economy.
By one Environmental Protection Agency estimate about five-billion dollars a year.

Parsons and his colleagues have been working to design a ship that has no need for
ballast. In the lab, a scale model has been tested in a long pool. Instead of pumping
water in and out of the ballasts, the water would flow through big
tubes that run the length of the ship.

“And so, that’ll create a slow flow through these trunks so that they’re always swept
clean of foreign water.”

“A ship like that is just what we need in the Great Lakes.”

Andy Buchsbaum runs the Great Lakes office of the environmental group, the National
Wildlife Federation.

“If you eliminate the need for ballast water altogether, then you’re eliminating the vast
majority of invasive species introductions that come in through the discharge of ballast.”

The ballast-free ship design is creating some excitement. Even the shipping industry is
paying attention because the ship also is more fuel efficient.

If someone decides to actually build the ballast-free cargo ship, it’ll be a while before
the first one is on the high seas.

Allegra Cangelosi has been working on the ballast and invasive species problem for
close to a decade. She’s a policy analyst with the Northeast-Midwest Institute.

“I think it’s a wonderful development. I don’t think there’s going to be any one answer
for all ships plying all waters throughout the globe. However, the more good answers
that are out there to choose from, the better for the environment.”

Some of those choices are filtering ballast water or killing organisms in the ballast with
chemicals. Those systems are expensive. And since fuel isn’t getting any cheaper, that
might make a more fuel-efficient ballast-free ship attractive.

For The Environment Report, this is Lester Graham.

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Saving the American Eel

  • Eel fisherman John Rorabeck near his home and fishery on Point Traverse, near Kingston on northeastern Lake Ontario. He says these waters were once practically boiling with eels. One night, he caught 3 tons of eels. Today he's lucky to catch one eel. (Photo by David Sommerstein)

For centuries, the American eel dominated the waters of parts of the Great Lakes. Only fifty years ago, the snake-like fish accounted for half of the biomass of Lake Ontario. Today, it has all but disappeared. Researchers and fishermen see the decline as a shrill warning about changes in climate and the environment. And they say now is the time to do something about it. The Great Lakes Radio Consortium’s David Sommerstein reports:

Transcript

For centuries, the American eel dominated the waters of parts of the Great Lakes. Only
fifty years ago, the snake-like fish accounted for half of the biomass of Lake Ontario.
Today, it has all but disappeared. Researchers and fishermen see the decline as a shrill
warning about changes in climate and the environment. And they say now is the time to
do something about it. The Great Lakes Radio Consortium’s David Sommerstein reports:


Before you say, who cares about a slimy critter like an eel, hear me out. Eels are
amazing.


They spawn in the Sargasso Sea – the Bermuda Triangle. But no one’s ever caught them
in the act.


“There is a mystery that we haven’t solved. We have never seen them spawn.”


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 rivers and streams from Florida to
Quebec.


“The eel is a fish that we should be looking at very closely.”


They live up to 20 years in freshwater before they start the long journey to the Sargasso
to spawn.


The problem is their offspring are not coming back.


“A very important native species of the Great Lakes, that we’re at serious risk of losing.”


As you can hear, a lot of people are worried about the eel, and not just in the Great Lakes.
European eel young are down 99% from the 1970’s. The Japanese eel is down 80%. In
Lake Ontario, the fish is all but gone. And the people who rely on it feel like they’re
disappearing too.


(sound up 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 thirty 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 was in there would be eels at certain times and there was literally tons of them on
that south shore. Now you could go back and you’ll find nothing.”


He stopped fishing eels three years ago because it just wasn’t worth it.


“That eel is telling man we better smarten up because this is happening all over the
world.”


Now Rorabeck 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 the Glenora Fisheries Station, run by the Ontario Ministry of
Natural Resources. In 1980, at a point on the St. Lawrence River in mid-summer, he
counted more than 25,000 eels a day. Last year, there were scarcely 20 a day.


Casselman ticks off a host of possible causes – overfishing, dammed-up rivers, erosion,
pollution, invasive species, and perhaps most troubling, a climactic change of cooling
ocean currents.


“There is an interrelationship between what’s going on in the ocean and the recruitment of
eels.”


And he says we’re mostly to blame. The problem is, Casselman and other researchers
don’t know exactly how all the factors relate or which is worse. And they say there’s no
time to find out. Last summer eel experts from 18 countries made an unusual statement.
In what’s now 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 stage, 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.”


The Great Lakes Fishery Commission has issued an emergency declaration of its own. It
represents commercial fishermen and anglers in the region. Spokesman Mark Gaden
says it’s calling on the U.S. and Canada to do everything they can to reduce eel deaths in
the Great Lakes.


“We’re committing ourselves, our resources to working to make the recovery of the
species a reality.”


Last month, the province of Ontario halted commercial eel fishing 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 to Lake Ontario 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.


For the Great Lakes Radio Consortium, I’m David Sommerstein.

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