Tag: anglers

Population Control for Cormorants

  • Biologists Jim Farquhar and Mike Smith inspect the cormorant nests in the treetops. (Photo by Karen Kelly)

The pesticide DDT almost wiped
out the double-crested cormorant.
Now, the bird is thriving, and it’s
blamed for devouring fish in lakes,
rivers, and fish farms in many parts
of the country. Karen Kelly reports
on the struggle to share resources
with this unpopular bird:

Transcript

The pesticide DDT almost wiped
out the double-crested cormorant.
Now, the bird is thriving, and it’s
blamed for devouring fish in lakes,
rivers, and fish farms in many parts
of the country. Karen Kelly reports
on the struggle to share resources
with this unpopular bird:

(sound of clanking and birds)

Mike Smith eases a boat into the shallow water just off Little Murphy Island. It’s a tiny patch of sand and trees in the middle of the St. Lawrence River. It straddles the New York border with Canada.

Smith is a wildlife technician with New York’s department of environmental conservation. He specializes in cormorant management. That means he knocks down nests, breaks eggs, and – very occasionally – shoots them.

Before he even jumps off the boat, he starts counting the birds that are poking out of nests in the treetops.

“I see a few. I’m looking at their nests. We tried to have a zero percent successful reproduction rate.”

Smith counts maybe ten nests. They started with 150 or so in the spring.

There are tens of thousands of these birds. They spend their summers in the north. And in the winter, they go south where they raid fish farms.

Biologists estimate each bird eats a pound of fish a day. That can make a dent in the local fish population. The birds also strip trees of their leaves to create nests. And their guano ends up killing the trees’ root systems. That ends up driving out other animals that need vegetation.

Some people feel the birds should be eradicated. One group of anglers was even arrested for killing hundreds of them on Lake Ontario.

There are others, like the group Cormorant Defenders International. They feel they should be protected.

It’s up to biologists like Jim Farquhar of New York’s Department of Environmental Conservation to find the balance between human needs and cormorants.

Farquhar: “We have needs too, as people.”

Karen: “And we’re competing with them.”

Farquhar: “And we’re competing with them in some cases. Hopefully, if we can inject good science, we make good decisions as a result.”

The biologists’ biggest effort has been on Lake Ontario. They’ve been destroying nests there — and killing some adults – for ten years. Farquhar says they’re finally seeing results.

They’ve reduced the cormorant population on the lake by about two-thirds, and the fishing’s improved.

Now, the biologists are trying to have the same success on the St. Lawrence River. But they’ve only seen a 13% decrease in the number of cormorant nests and they’ve been doing it for four years.

Part of the challenge is that most of the birds live on Canadian soil where management is left to the landowner.

Local anglers like Steve Sharland of Ogdensburg, New York, are frustrated with the slow progress.

“They should eliminate them. They’re not a Northern New York bird and what they’re doing to our fisheries is a sin.”

That’s a common misconception. Actually, the cormorant is native to the region but few people have seen them in such large numbers.

Sharland says some people are so frustrated, they’ve been shooting the birds illegally. But Jim Farquhar believes those are isolated incidents.

“Mike just mentioned that we’ve got some black-crowned night herons nesting out here. It’s another species we’re concerned about, and one we’ve been trying to actively protect from the cormorants. So that’s a good sign.”

A good sign. But it’s another species trying to live on this small patch of land. And the biologists’ balancing act has become even more delicate.

For The Environment Report, I’m Karen Kelly

Related Links

Sport Fishing Drops on Great Lakes

  • Researchers are trying to figure out why fewer people are fishing the Great Lakes. (Photo by Lester Graham)

A national survey of anglers is trying to determine why
fewer people are fishing the Great Lakes. Peter Payette
reports:

Transcript

A national survey of anglers is trying to determine why
fewer people are fishing the Great Lakes. Peter Payette
reports:


The Great Lakes have seen a steep decline in sport fishing
in recent years. But Rob Southwick says there’s little or
no research to explain why.


His firm, Southwick Associates, conducts a national
survey every month on recreational fishing. In December
they asked anglers about the Great Lakes.


Southwick says despite advisories about contamination in
fish in the lakes, less than one percent of those surveyed
mentioned health warnings as the problem.


We think that was a major issue in the late eighties and
early nineties but people are not telling us that is a reason
why they are staying away from the Great Lakes anymore.


Southwick says people are finding other lakes and streams
to fish, even though no one is complaining about the
quality of fishing on the big lakes.


But he thinks the time and gear needed to fish in the deep
wide waters of the Great Lakes are part of the problem.


For the Environment Report, I’m Peter Payette.

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Virus Killing Great Lakes Giants

  • Fishing guide Rich Clarke of Clayton, NY, is famous for muskie hunts. He's worried so many adult muskies are falling victim to VHS. (Photo courtesy of Rich Clarke)

Fall is when avid anglers flock to the Great Lakes for one of the most
challenging freshwater catches: the muskellunge, or muskie. Some call it
“the fish of 10,000 casts.” This year’s muskie season is clouded by bad news
of a new fish disease and invasive species crowding muskie habitat. David
Sommerstein reports scientists are watching this top-of-the-food-chain
species carefully:

Transcript

Fall is when avid anglers flock to the Great Lakes for one of the most
challenging freshwater catches: the muskellunge, or muskie. Some call it
“the fish of 10,000 casts.” This year’s muskie season is clouded by bad news
of a new fish disease and invasive species crowding muskie habitat. David
Sommerstein reports scientists are watching this top-of-the-food-chain
species carefully:




It’s a cool afternoon as fishing guide Rich Clarke fillets the day’s catch:


“Went out, caught some northerns, a few bass, some jack perch. Had a
pretty good morning.”


Clarke’s specialty is hunting for muskies, 60 pound fish with a lot of fight:


“I mean, the rod screams, they yank, yank, and yank. It doesn’t come all that
often, but when it comes, it’s one of the most exciting things you’ll see when
you fish in fresh water.”


Clarke worries that magical hit might become even more rare. Since 2005,
several hundred of those prized muskies were found belly-up dead, victims
of viral hemorrhagic septicimia, or VHS.


(Sound of hose)


Clarke washes down his fillet table. He mutters VHS is just another non-
native organism threatening the muskie. There are already more than 180
invasive species in the Great Lakes-St. Lawrence River system:


“Everything from the goby to the , y’know, and weed species and all
sorts of stuff, spiny water fleas, you name it, all sorts of stuff that are not native to this
waterway that we have to deal with, and it changes the whole ecology.”


A new invasive species is found every six to nine months. Scientists can
barely keep up in understanding the impact on the native environment.




In a nearby bay of the St. Lawrence River in northern New York State,
Roger Klindt, John Farrell, and a crew drag a huge net through the water:


“We’ve got two people pulling it slowly through the vegetation just trying
to basically corral fish.”


This is called seining, getting a sample of all the fish that live here. Klindt
and Farrell have been doing this in the same marshy shallows for more than
20 years. And Farrell says what they’ve found this year is disturbing:


“Muskellunge numbers in the index are at their lowest levels on record since
we’ve been collecting data.”


Down from almost 50 in the spring spawning run of 2003 to just 4 this year.
Farrell’s a researcher with the State University of New York Environmental
Science and Forestry. He says this could be the result of VHS killing so
many adult muskies in their reproductive prime.




Yet another invasive species is also troubling, the round goby. It’s an ugly
little fish from Eastern Europe that breeds like crazy. Farrell and Klindt
count minnows flipping and fluttering in the seining net:


“15 black gins, 8 blunt nose, 5 spot tail.”


“I didn’t actually count things, I was just picking gobies.”


Farrell says they’ve found more round gobies in these marshes than ever
before:


“Which is a bit of a surprise to us.”


Now the muskie young have to compete with round gobies for food:


“How these species are going to respond to the presence of gobies is
unknown at this time, but they have high predation rates, they’re very
prolific, becoming extremely abundant, so the food web in this system is
shifting.”


This is what frustrates people who study invasive species. Once researchers
train their focus on one, like the fish disease VHS, another emerges to
confound the equation. Roger Klindt is with New York’s Department of
Environmental Conservation:


“Change happens, y’know, nothing stays the same forever. But when we
have invasive species and exotic species come in, the change is often so
rapid that native species can’t adapt to it.”


That talk makes anglers nervous. Peter Emerson’s been fishing around here
for years. In fact, he participated in a catch and release program that brought
muskie populations back to health in the 1980s:


“There was a real bonanza, til this virus showed up. I’m hopeful they don’t
go extinct.”


Biologists expect adult muskies that survived VHS will develop resistance to
the disease. But they fear the next generation won’t inherit the immunity,
causing more die-offs of one of America’s most prized freshwater fish.


For The Environment Report, I’m David Sommerstein.

Related Links

Connecting With Nature Profile

Today we’re presenting the first in an
occasional series about peoples’ connections to
the environment. Producer Kyle Norris asked a
range of people if they felt close to nature.
She begins by talking with her uncle, a professional
fly-fisherman:

Transcript

Today we’re presenting the first in an
occasional series about peoples’ connections to
the environment. Producer Kyle Norris asked a
range of people if they felt close to nature.
She begins by talking with her uncle, a professional
fly-fisherman:


My Uncle Mark has run a fishing guide service for twenty-nine years. He
floats down the Potomac River in a 14-foot aluminum raft that he
designed. He goes through Harper’s Ferry, West Virginia, where the
Potomac and Shenandoah Rivers come together near the Blue Ridge
Mountains. My uncle says that for him, the thrill of fishing dates back
to his childhood in Michigan:


“You know, when I first started, it was like I’m going to catch fish
and as a little kid I liked to ride back home from the Detroit River
with a stringer across the handlebars of my bicycle, I was the great
hunter or great fisherman. And we took turns as buddies bringing fish
home on their bikes.”


I don’t get to see my uncle a whole lot. But when I was little, he took
my cousin and me fishing. He made us kiss the first fish that we
caught. Which was kind of silly and fun.


“Oh, you always kiss your first fish. Twenty-five years ago I had some
younger anglers in my boat. And one of them caught a fish and he gave it
a kiss and let it go and I looked at him and then I caught a fish I
think a little bit later and I didn’t kiss it and he goes, ‘What are
you doing?’ and I said, ‘Well, what do you mean?’ And he goes, ‘Oh, you
have to kiss your first fish.’ And I just said, ‘Well, that makes a lot
of sense.’ I think it sets the tone for the day.”


When you hold a fish up to your face and look closely at its glistening
scales and you kiss it, you definitely feel close to it.


“I fish a lot and I hardly ever kill any fish anymore. And in fishing
it’s really the most genteel of the blood sports. You know, you have all
the pleasures of the hunt but you don’t have to make the kill.”


When my uncle talks about nature, he gets this blissed-out look on his
face.


“The water colors can vary from, you know, coffee with cream if it’s
really been a lot of rain and it’s all stirred up to where it’s a
relative clear nice green to it. It can sometimes look like a trout
stream where it’s like gin-clear, you know. It depends on rainfall and the
time of year and stuff. And I love flowing water. ‘Cause it’s always
changing and it’s moving you. Especially when you wade in it. It runs
between your legs and it’s just, you feel like you’re a part of it.”


Some people talk about nature in spiritual terms. That’s something I
never talked about with my uncle but I wondered.


“Oh, it’s probably as spiritual as I get. Yeah, I think sometimes,
sure. You get a lot of respect for nature. And I guess um, spiritual quality…um, yeah. When you really try
to embrace the whole environment and you’re taking in all the flora and
fauna, you’re taking in all the trees and the aquatic vegetation and the
insects that live in that environment and then all the, all the
creatures that live in the environment, plus the fish I might be
pursuing and stuff and then how all that works together. And then how people impact that
too, and I always feel like, I never feel like I’m in control. I always feel like there’s a lot of
variables. I have an idea of what I’m doing but I never feel that I am
like I’m in control. And so I guess there’s a spiritual quality to
that. Got a lot of respect for nature. Got a lot of respect for water.
Flowing water especially.”


The way my uncle talks about the water and the words he uses really
paints a vivid picture in my head. I can hear the love in his voice.
When he talks like that, I feel closer to the places and the fish he’s
talking about. And hearing how he really feels makes me feel closer to
him.


For the Environment Report, I’m Kyle Norris.

Fish-Eating Bird Disrupting Food Chain?

The once near-extinct double-crested cormorant has made a dramatic comeback in the past few decades, and sport fisherman say the fish-eating birds are hurting their business. But as states move to limit their cormorant populations, there’s still no solid research that the birds are really to blame. The GLRC’s Gregory Warner reports:

Transcript

The once near-extinct double-crested cormorant has made a dramatic
comeback in the past few decades, and sport fisherman say the
fish-eating birds are hurting their business. But as states move to
limit their cormorant populations, there’s still no solid research that
the birds are really to blame. The GLRC’s Gregory Warner reports:


More states are joining the war on cormorants: oiling eggs to prevent
them from hatching, or shooting the birds. More than 11,000 of the
federally-protected birds were shot last year.


But there’s still no scientific proof saying birds compete with sports
fisheries. Jim Farquar is a biologist with the New York Department of
Conservation:


“We’ve not been able to detect declines in the fisheries at this point
in time. But that doesn’t mean that with a larger cormorant population
it won’t happen.”


At issue is diet. Cormorants eat whatever small fish are available,
leaving big game fish alone. In some regions, the birds eat almost
exclusively round gobies, an invasive species. Anglers believe that
cormorants disrupt the food chain, causing the numbers of larger fish to
decline.


For the GLRC, I’m Gregory Warner.

Related Links

Untapped Power in Offshore Wind Turbines?

  • Developers want to put wind turbines in offshore locations like Lake Ontario and off the coast of Massachusetts. (Photo by David Orsborne)

The U.S. Department of Energy wants 20 percent of the country’s electricity supply to eventually come from wind power. Some of that power could come from wind turbines located on the water. The GLRC’s Chuck Quirmbach reports some power companies are hesitating:

Transcript

The U.S. Department of Energy wants 20 percent of the country’s
electricity supply to eventually come from wind power. Some of that
power could come from wind turbines located on the water. The
GLRC’s Chuck Quirmbach reports some power companies are hesitating:


Until recently, the strength of the wind on the water was mainly of
interest to the shipping industry, anglers, and to people who like
to sail.


(Sound of sail ruffling and folding)


Lee Konczak is folding up the sail on a small sailboat that he often
takes out into Lake Michigan. Konczak says he likes the serenity of
riding on the wind and the beautiful view from offshore. Even so, he
says he wouldn’t mind if the view included a few wind turbines:


“With energy certainly being at the top of the news practically on a
daily basis right now, and with limited resources, I think an
experimental kind of thing with wind turbines would be excellent.”


Some wind power companies are planning more than a small
experiment. An effort is underway to put up 140 wind turbines in Lake
Ontario and another developer wants a wind farm off the coast of
Massachusetts. The industry would like to develop more projects. It
says the US is behind some European countries when it comes to
going offshore for wind. Compared to the US, European countries are
short on fossil fuel supplies and they don’t have as much land. So
they began placing turbines offshore a few years ago.


John Dunlop is with the American Wind Energy Association. He says the land-based
wind turbines in the US and Canada are important but often trigger local
disputes over new overhead transmission lines. Dunlop says lake-based
wind turbines would avoid some political squabbles by being close to
many cities:


“We enjoy living next to water, so consequently our population centers
tend to be close to the water which means a lake-based installation
may be no more than 10-20 miles away from that load center. Now, to get
that energy, that electricity from that wind project back to the city
you do need to have underwater cabling, but that’s a fairly common
technology so that’s not a huge impediment or a huge cost.”


Several environmental groups are getting on board with the idea of
putting wind farms in waterways. Charlie Higley is with the Citizens’
Utility Board in Wisconsin. He says there are already many coal and
nuclear plants near the water:


“Both of those have huge environmental and economic costs
associated with them, so we’re supportive of the development of
wind, not only on land but we really think the time is now to
start looking at developing wind resources on Lake Michigan.”


Higley acknowledges some people may not like the look of wind
turbines if they’re installed within view of the shoreline. Other
supporters concede there also needs to be more study of wind speeds
over the water. They also say there needs to be a cheaper way to fix
turbines that break down in waters dozens of feet deep.


Walt Musial helps oversee offshore wind projects at the National Renewable Energy
Lab. He says getting to a turbine in water is no easy task:


“You can’t drive a truck, so you have to drive a boat, or perhaps a helicopter like they do
in Europe. These add costs as well, and so these methods of accessing turbines have to be
developed and minimized.”


Still, Musial says because the Energy Department’s long-term goal is
to promote more wind production, he predicts some of that wind power
will come from offshore. But for now, the uncertainties have many
power companies rooted in inland turbines.


Kim Zuhlke is with Alliant Energy. He says his firm prefers a place
like Iowa, where there are already 800 wind turbines and a
desire from public officials to have more:


“You couple the acceptance, the economic growth, existing
transmission, all of those things together make it a logical place
for us to go.”


Still, Zuhlke says offshore wind turbines in the U.S. may become
a reality. He says engineers have to perfect a turbine that provides a big
enough payback for the additional expense of putting something way out in
the water.


For the GLRC, I’m Chuck Quirmbach

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New Fish Virus Becoming Long-Term Threat?

Biologists are concerned a new fish virus may become an ongoing threat in the Great Lakes. The virus caused a fish die-off in Lake Ontario and the St. Lawrence River last month. The GLRC’s David Sommerstein reports:

Transcript

Biologists are concerned a new fish virus may become an ongoing threat in the Great Lakes.
The virus caused a fish die-off in Lake Ontario and the St. Lawrence River last month.
The GLRC’s David Sommerstein reports:


Viral Hemorrhagic Septicemia is common in saltwater fish in the Pacific Northwest,
but somehow the virus hopped into the freshwater fish of Lake St. Clair and Lake Ontario
last year. Then, last month, the virus killed hundreds of fish in the St. Lawrence River.
Scientists are trying to determine if the virus is a long-term threat to the Great Lakes
fishery:


“You know, that’s kind of the million dollar question.”


John Farrell directs the Thousand Islands Biological Station. He says many
fish species may become infected with the virus but not show symptoms:


“They may serve as a reservior for the virus. There’s a potential
that the virus could cycle over time, but may be with us for a long time to come.”


Conservation officials are most worried about muskies, trout and salmon – native
fish that anglers love to catch.


For the GLRC, I’m David Sommerstein.

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Dam Removal’s Balancing Act

  • The continued operation of hydroelectric dams will be up for debate in the next decade. Currently, the Army Corps of Engineers is looking to remove the Boardman River dam in northern Michigan. This dam removal could impact how all future dam removals are completed. (Photo courtesy of the Michigan Department of Natural Resources)

The Army Corps of Engineers is tackling a dam removal project that could affect how the Corps approaches future dam removals. In the next decade, communities will be deciding whether to keep operating tens of thousands of hydroelectric dams on rivers across the country. This project is significant because it involves several dams being taken out of production along the same stretch of river. The GLRC’s Bob Allen reports:

Transcript

The Army Corps of Engineers is tackling a dam removal project that
could affect how the Corps approaches future dam removals. In the next
decade, communities will be deciding whether to keep operating tens of
thousands of hydroelectric dams on rivers across the country. This
project is significant because it involves several dams being taken out of
production along the same stretch of river. The GLRC’s Bob Allen
reports:


(Sound of water)


The Boardman River is beautiful. It winds and turns and tumbles
through forested hillsides and passes along northern cedar swamps.
Sections of the upper river qualify as a blue ribbon trout stream, but a
series of dams along the lower half of the river changed some of the best
river water.


Steve Largent has worked on repairing damaged banks along the
Boardman for the last fifteen years. He says removing the dams will
restore faster flowing sections of the river, and clearing out the sand and
silt built up behind the dams will be good for trout and other critters.


“The sediment that is building up in the back of Brown Bridge pond
continues to move upstream as it fills in the upper end of the pond it’s
aggregrating upstream. It’s moving upstream further and further destroying
habitat further upstream.”


So a free running river will help wash away that sediment, but these days
it’s not just anglers who are interested in the Boardman River. Recently
river engineers have been drawn to the Boardman like trout to a fly
fisherman’s lure. They’re interested in landing the job of studying the
Boardman River and its dams. The million dollar study will look at
whether to keep or tear down three hydroelectric dams along a 17 mile stretch of river in northern Michigan just before it flows into Lake
Michigan.


Craig Fischenich is a research engineer with the Army Corps of
Engineers. He says the potential to remove three dams along the same
stretch of river is not something you’re going to find anywhere else.


“Whereas in many parts of the country they’re removing individual dams, they’re on systems that have other dams on them, and so this is an
opportunity here to actually try to restore an entire watershed.”


Fischenich says taking out the dams would mean improvements for
native fish. But there are risks too. If the dams go, invasive species
such as the parasitic sea lamprey could get upriver, and introduced
species such as steelhead and salmon could swim into the river and
compete with the native fish.


That prospect doesn’t exactly thrill John Wyrus, who lives on the
Boardman. He’d rather see some kind of obstacle down near the mouth
of the river to prevent introduced species from entering.


“So that these steelhead and salmon can’t get up the river. I would just
like to see it a brown trout and brook trout fishery.”


That’s the kind of scenario the study of the Boardman River would
consider.


(Sound of people talking)


Recently a lot of the engineers vying to do the study gathered at a
conference put together by the Corps of Engineers.


Gordon Ferguson works for ENSER Corporation. His company
is one of a dozen that submitted bids to land the study.


“This is a particularly interesting project because it involves a lot of
complex issues both from an engineering standpoint and also local
community issues. Property rights issues of homeowners along the
watershed.”


What they learn from the Boardman could be important to communities
near rivers across the nation.


Many of the tens of thousands of dams across the country are aging, and
in coming years, just like on the Boardman River, those with hydroelectric generating stations will need to be upgraded to keep their operating license.


The local utility says the dams on the Boardman don’t generate
enough power to make it worth fixing them. So they’re giving up the
licenses to generate electricity. Ownership of the dams reverts to the
local governments, and local officials are asking the Army Corps of
Engineers to pay for the study of the Boardman. The federal agency is
eager to be involved in this project.


The Boardman River study offers a chance for researchers to figure out
how to count less tangible values. Like how removing dams will affect
other wildlife such as eagles and osprey along the river.


Jock Coyngham is an ecologist for the Army Corps of Engineers.
Typically, he says, wildlife and recreation get discounted in this kind of
study because it’s easier to quantify things like hydropower, but it’s
important to figure out what value they have.


“If you make all your resource decisions as a state and as a country over
a long period of time pretty soon there won’t be any substantial fish
populations, any wild reproduction. Just because traditional cost-benefit
analysis tends to underestimate those ecosystem services and values, let
alone aesthetics.”


The Army Corps is waiting final approval for funding. Once given the
OK, the study of the Boardman River and its dams… could very well lay
the groundwork for other dam removals around the country.


For the GLRC, I’m Bob Allen.

Related Links

Ten Threats: Coaster Brook Trout

  • A close up look at a Coaster Brook trout. (Courtesy of the Wisconsin Department of Natural Resources)

A lot of native fish have been hurt by pollution, invasive species and changes we’ve
made on the lake, but one fish stands out. For anglers, the Coaster Brook trout might have
been the greatest Great Lakes fish. It was abundant, fun to catch and lived in the cleanest
water, but throughout the 20th century, its populations declined just as the health of the
lakes did. Now, slowly, a diverse group of people is trying to save the fish in an effort
that could improve the Great Lakes too. The Great Lakes Radio Consortium’s Chris
McCarus reports:

Transcript

We’re continuing our look at Ten Threats to the Great Lakes. Lester Graham is the
series guide. He says one of the threats is a disappearing species.


A lot of native fish have been hurt by pollution, invasive species and changes we’ve
made on the lake, but one fish stands out. For anglers, the coaster brook trout might have
been the greatest Great Lakes fish. It was abundant, fun to catch and lived in the cleanest
water, but throughout the 20th century, its populations declined just as the health of the
lakes did. Now, slowly, a diverse group of people is trying to save the fish in an effort
that could improve the Great Lakes too. The Great Lakes Radio Consortium’s Chris
McCarus reports:


(Sound of river waterfall)


Hundreds of feet above Lake Superior, the Salmon Trout River flows fast and falls hard
onto a rocky bottom below. Much of the river lies within a large tract of private woods
and hills. It’s been untouched for about a century.


Peter Dykema and his family are part owners of the land. He speaks with affection about
fishing for coaster brook trout here as a kid.


“Well as you can tell it’s a beautiful river and there’s nothing a 14 year old boy would
rather do than get his feet cold and wet and throw flies into trees. So, I did it every
chance I had.”


Dykema is nostalgic because those days are long gone for almost everybody. He’s part
of a group of activists trying to restore the coaster brook population.


Coaster brook trout have sparkling colors. They’re even more colorful than Rainbow
trout, and they grow a lot bigger. They can reach 2 feet and 4 pounds. These indigenous
fish used to live in 200 streams around Lake Superior. People came from all around the
nation to fish for them. Presidents Roosevelt and McKinley came to Michigan to catch
them, and they were caught by the boatload.


Over fishing was one of the biggest reasons why they were nearly wiped out. Their
habitat was damaged from mining and road building. Silt filled in the rock bottom where
they like to lay their eggs. That also hurt the fish.


Logging damaged the coaster brook’s habitat. Scott Libants is a fish and wildlife
researcher at Michigan State University. He says loggers dammed up streams to flood
them. Then they packed them with logs. When they had enough, they broke the streams
back open so the logs would float down to the lake to be sold.


“You knock the dam out and send all the trees down. You scour the watershed. It’s like
flushing a toilet.”


The fish haven’t recovered since. They just couldn’t take the abuse.


The Salmon Trout River still has them because the private landowners banned fishing
and didn’t alter the land. It’s one of only a handful of streams in the U.S. and Canada
that still has the coaster brook trout.


(Sound of people walking in the woods)


Downstream on the way to Lake Superior, Peter Dykema and state environmental
officials walk to the spot where they have equipment that counts the numbers of coaster
brooks going up river to lay their eggs. Dykema says they counted more than 80 fish last
season. The population seems to be slowly increasing here, but the stream still isn’t
perfect. There’s too much sand and not enough gravel for laying eggs.


“Most of the sediment problem we are looking at is a creature of the last 40 or 50 years.
So if we can stop the input, I’m hoping that the river will be able to cleanse itself.


The sediment Dykema is talking about comes from the points where roads cross the river.
People and cars jar soil loose and it fills up the riverbed. This is the fish’s current
challenge. Coaster brook trout are sensitive and susceptible to pollution. Conservation
officials use brook trout as indicators of high water quality. Coaster brooks will die if
they don’t have nearly perfect conditions.


(Sound of Lake superior waves lapping on rocks.)


Few anglers alive today have seen coaster brook trout, but if they could this would be the
place. It’s where the Salmon Trout River meets Lake Superior. For a diverse group of
conservationists, this place symbolizes what people did to the land and water of the
region.


Laura Hewitt is visiting from Trout Unlimited in Wisconsin.


“This is a fish that presidents came to fish for, that Hemingway wrote about. It’s
something that captures the imagination, it touches the soul. It’s a fish that we care
very much about and think it can be sort of a rallying point for action in the basin.”


Those working to preserve the last few hundred coaster brook trout say we should feel
lucky that they’re not all gone. They say now’s the time to keep what’s left, build it up,
and use the eggs from this small population to start the fish in other streams of Lake
Superior. Then perhaps within our lifetime, our children can enjoy the fish that our great
grandfathers did, and in doing that, they’ll know the water’s clean.


For the GLRC, I’m Chris McCarus.

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Ten Threats: The Beloved Invader

  • Because alewives are the main source of food for some sport fish, some people forget that they're an invasive species. (Photo courtesy of NOAA Fishery Service)

As we look at the “Ten Threats to the Great Lakes,” we’re spending some time examining the effects of the alien invasive species that have changed the Lakes. One of the first invasive species to arrive in the Great Lakes was the alewife; it’s native to the Atlantic Ocean. It has become the most beloved of all the invasives. That’s because it’s food for the most popular sport fish in the Great Lakes. But in the beginning, the sport fish was introduced to get rid of the alewives. Peter Payette reports:

Transcript

Today we’re continuing our series on Ten Threats to the Great Lakes. The Great Lakes Radio Consortium’s Lester Graham is our series guide:


As we look at the “Ten Threats to the Great Lakes,” we’re spending some time examining the effects of the alien invasive species that have changed the Lakes. One of the first invasive species to arrive in the Great Lakes was the alewife; it’s native to the Atlantic Ocean. It has become the most beloved of all the invasives. That’s because it’s food for the most popular sport fish in the Great Lakes. But in the beginning, the sport fish was introduced to get rid of the alewives. Peter Payette reports:


When autumn arrives in Northern Michigan, salmon fishermen line the rivers. The fish, native to the Pacific Ocean, swim upstream to spawn and then die. That’s why Tim Gloshen says they’re not interested in his bait.


“But if you irritate ’em enough and keep putting it in front of them, they’ll snap at it sometimes and you got to be ready when they hit it and set your hook.”


Anglers caught eight million pounds of salmon in Lake Michigan last year. Most of the fish are caught out in the lake.


“I got buddies that are catching couple hundred a year out there. They’re out there twice a week at least, all summer long, you know.”


Tim and his buddies and everyone else who fishes for salmon in the Great Lakes are at the top of the food chain. The money they spend on food, lodging, tackle, and boats figures heavily into decisions about how to manage the Lakes.


But it wasn’t always so.


Pacific salmon were stocked here about forty years ago to control the invading alewives. The native lake trout had just about been wiped out by overfishing and the sea lamprey. With no big predators left, the alewife population exploded.


At one point, it was estimated that for every ten pounds of fish in Lake Michigan, eight were alewives. Occasional die-offs would cause large numbers of alewives to wash up on beaches all over the Great Lakes. Historian Michael Chiarappa says all this was happening as America was feeling the urge to get back in touch with nature.


“And that’s when you get this rise in greater interest in sport fishing, recreational fishing, hunting. Teddy Roosevelt sort of epitomized the spirit of the strenuous life; get back out there and engage nature. It’s good for the soul, it’s good for the body, it’s good for the mind.”


So the salmon was brought in to control the alewife population and transform the Great Lakes into a sport fishing paradise. And it worked. But alewives remained the best food source for the ravenous salmon.


So now a healthy alewife population is seen as a good thing by the states that benefit economically from the recreational fishing. Mark Holey, with the U.S. Fish and Wildlife Service says this has caused people to forget alewives are an invasive species.


“If alewives were knocking on the door today, there may be a much different discussion about it. It may be more like the Asian carp.”


How the alewife would compare to Asian carp is unknown, because the Asian carp has been found in the Mississippi River, but not yet in the Great Lakes. What is known is that when alewives are abundant, native fish don’t do well. For example, Holey says biologists used to think PCBs caused many young lake trout to die. Now they know early mortality is mostly due to thiamin deficiency.
Thiamine is a vitamin lacking in lake trout that eat too many alewives.


“From the studies that we’ve been involved with, anywhere, right now, anywhere between thirty to fifty percent of the females that we take eggs from show some… their eggs show some signs of thiamine deficiency. Which means survival of those eggs are impaired.”


In some cases, none of the eggs will survive. So a worse case estimate would be half of the wild lake trout in the Great Lakes can’t reproduce because of alewives. This is why advocates for native fish species have been happy to see the alewife populations decline in recent years. They almost disappeared from Lake Huron.


Mark Ebener is a fisheries biologist for the Chippewa Ottawa Resource Authority. He says the government agencies that stock salmon and lake trout should stock more than ever to keep pressure on the alewife. Ebener thinks with alewife numbers down, there’s an opportunity to reestablish the native herring as the main prey fish in the Lakes, especially in Lake Huron.


“Saginaw Bay used to have a huge population of lake herring that’s essentially gone. They used to have a tremendous commercial fishery for it, and people used to come from miles around to buy herring there, and everybody in the lower end of the state used to have herring come fall and the springtime when the fishers were fishing, but they’re gone.”


This opportunity to bring herring back might not last much longer. The warm weather this past summer will probably help alewives rebound next year.


For the GLRC, I’m Peter Payette.

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