Tag: alien

Lake Huron’s Invasive Species

  • Filmmaker John Schmit says he wanted to make this film to show how even the smallest invader could mess up the delicate balance of life in the lake. (Photo courtesy of the NOAA GLERL)

You might call Lake Huron the forgotten Great Lake. There are no major cities on its shores. It doesn’t get the media attention the other four Great Lakes do. But its problems are just as bad or worse. Rebecca Williams reports a new documentary tells the story of Lake Huron’s struggle with dozens of alien invaders… and the biologists and fishermen who are trying to reclaim their lake:

Transcript

You might call Lake Huron the forgotten Great Lake. There are no major cities on its shores. It doesn’t get the media attention the other four Great Lakes do. But its problems are just as bad or worse. Rebecca Williams reports a new documentary tells the story of Lake Huron’s struggle with dozens of alien invaders… and the biologists and fishermen who are trying to reclaim their lake:

The documentary Lake Invaders is a cautionary tale about opening the door to strangers. It tells how Lake Huron was opened up to alien invasive species. The film paints fish biologists as the heroes rushing in.

“Seems like it always has to wait until it’s at a disaster level before you know, we can start fixing it… we’re constantly putting out these biological fires, running from fire to fire, to try to keep them under control. We have to find another way to approach this.”

More than 180 non-native species have gotten into the Lakes… and some of them have turned everything upside down. Long, slithering, blood-sucking parasites called sea lamprey were the first to get in. They slipped through a canal that connects the Atlantic Ocean and the Great Lakes. Lamprey killed off most of the big predator fish in the Lakes.

Then… came the alewife. Since the lamprey had taken out the top predators… there was nothing to eat the invading alewives. In the film… biologist Jeff Schaeffer explains how the small fish took over the lakes.

“At that time over 90% of the fish biomass of Lake Michigan and Lake Huron was probably dominated by the exotic alewife. One of my colleagues refers to the Great Lakes at that time as alewife soup.”

Suddenly… there was a major stinking mess. Each spring, hundreds of millions of dead alewives washed up on shore and rotted. Not the best thing for tourism.

Filmmaker John Schmit says he was surprised to learn what happened to the lakes next.

“The funny thing about the Great Lakes is there’s Pacific salmon in them.”

Schmit says biologists brought in millions of salmon from the Northwest to control the alewives. The crazy thing is… it worked. In the film we see how a 4 billion dollar sport fishing industry was born. And the native fish of Lake Huron were pretty much forgotten about.

The salmon fishery boomed for decades. Until the alewives crashed in 2003.

Fisher Doug Niergarth says then… the salmon started starving.

“Two years ago we saw some monster salmon heads that were sitting on little dwarfed bodies. And it was the ugliest thing and rather nasty. Just skinny and withered away. It was the nastiest thing you ever done seen.”

The fishing industry started slipping away. Marinas just scraped by. Tackle shops and motels closed. People finally realized there was something wrong with the lakes.

John Schmit says he wanted to make this film to show how even the smallest invader could mess up everything… both the delicate balance of life in the lake and the people who fish it and depend on money from tourism.

“Lake Huron has been the most impacted by the newest invaders. My personal concern, my investment in the Great Lakes and making this documentary is for people to be aware of the kind of damage invasive species can do to these huge lake systems.”

He says his film Lake Invaders is an example of what invasive creatures can do… not just to Lake Huron… but any ecosystem.

For The Environment Report, I’m Rebecca Williams.

Related Links

Ten Threats: Hidden Costs of Invasives

  • Foreign ships like this one from Cypress are known as "Salties" around the Great Lakes. These ships are responsible for bringing aquatic invasive species into the Lakes, and we're all paying a price. (Photo by Mark Brush)

In looking at these threats to the Great Lakes, almost everyone we surveyed agreed the worst threat was alien invasive species. Shipping goods in and out of the Great Lakes has helped build the major cities on the Lakes. But shipping from foreign ports has brought in unwanted pests. Zebra mussels are probably the most infamous, but there are more than 160 aquatic species that have invaded the Lakes and changed them, almost always for the worse. So why can’t we keep them out?

Transcript

Today we begin an extensive series called “Ten Threats to the Great Lakes.” The Great Lakes Radio Consortium’s Lester Graham is our guide through this series:


In looking at these threats to the Great Lakes, almost everyone we surveyed agreed the worst threat was alien invasive species. Shipping goods in and out of the Great Lakes has helped build the major cities on the Lakes. But shipping from foreign ports has brought in unwanted pests. Zebra mussels are probably the most infamous, but there are more than 160 aquatic species that have invaded the Lakes and changed them, almost always for the worse. So why can’t we keep them out?


Well, let’s say I import widgets.


(Sound of widgets dropping into a cup)


I’ve been getting widgets from somewhere in Asia, but I found out I could get widgets from an eastern European company for a dollar-a-widget cheaper. The factory there can ship them directly to my warehouse in Great Lakes City, USA by ship across the Atlantic and into the Great Lakes.


Pretty good deal. I get good widgets, the shipping costs are cheaper, my profits go up, and it means cheaper widgets at the retail level. Everybody wins, right?


Well, the ship that brought the widgets also brought an alien invasive species that stowed away in the ship’s ballast. A critter that’s native to eastern European waters is now wreaking havoc on the Great Lakes ecosystem.


Aquatic alien invasive species that have invaded the Great Lakes now cost the economy an estimated five billion dollars a year. Five billion dollars of what’s considered biological pollution.


So, who’s paying the price?


Cameron Davis is with the environmental group Alliance for the Great Lakes.


“Unfortunately, in most instances, who pays for those hiddens costs are you and me. We pay for our water agencies to have to clean zebra mussels out of their pipes, we pay our agencies through taxes to have to keep Asian Carp out of the Chicago River, we pay through our taxes in any number of ways to try to fight these invaders.”


So right now, taxpayers and utility ratepayers – even those who never bought a widget and never will – are paying the price. Davis says that’s just not right.


“One of the things we need to do is make sure that those ships are paying full cost for everything that they bring, not just the widgets, but the stowaways like the zebra mussels, things like that that they have on board.”


So, why target the ships?


Dennis Schornack chairs the U.S. Sector of the International Joint Commission. The IJC is a bi-national agency that monitors a water quality agreement between the U.S. and Canada. Schornack says that’s the way it usually works: the polluters pay.


“The cost of the impact of these unwanted creatures is something that’s not baked into the price charged for the widgets. So, somewhere that external cost needs to be captured back into the price. The ship owners themselves are the likely target to pay for this through a permitting fee which, of course, they will pass on to their customers, the people who made the widgets.”


So all of us who buy widgets end up paying a little more, but paying permits and fees could cost shippers more than they can afford. George Kuper is with the Council of Great Lakes Industries. Kuper says he understands the first impulse is to make the shippers pay.


“The problem with that, of course, is the shippers were already close to non-economic as a method of transportation, which puts us right up against an environmental challenge because shipping is by far the most environmentally un-intrusive method of moving large amounts of materials.”


Kuper says using other methods of transportation such as trains or trucks to move that cargo from East Coast ports might burn more fuel and cause more pollution.


But of all the shipping on the Great Lakes, only six percent of the tonnage is carried on ocean-going vessels. The rest is transported on Great Lakes carriers that never leave the lakes and don’t bring in new invasives. So, the question is this: is that six percent of cargo worth the damage that aquatic invasive species cost each year.


Many experts say there is a fairly simple answer to all of this. Technology is available for cargo ships to eliminate invasives from their ballast tanks. Requiring those ships to use that technology would likely add some to the cost of every widget, but supporters of the idea say it would greatly reduce the environmental cost to the Lakes.


For the GLRC, this is Lester Graham.

Related Links

Gl States Speak Up on Ballast Water Lawsuit

A lawsuit brought by several environmental groups in California seeks to increase protection against invasive species. The groups hope to force the Environmental Protection Agency to regulate ballast water discharge. Now, officials from the eight Great Lakes states are writing-in to support these groups in their lawsuit. The Great Lakes Radio Consortium’s Celeste Headlee reports:

Transcript

A lawsuit brought by several environmental groups in California seeks
to increase protection against invasive species by forcing the
Environmental Protection Agency to regulate ballast water discharge.
Now, officials from the eight Great Lakes states are writing in to
support these groups in their lawsuit. The Great Lakes Radio
Consortium’s Celeste Headlee reports:


Researchers say ballast water from oceangoing ships is one of the
primary methods by which invasive species enter the Great Lakes.
State Attorney General Mike Cox wrote the amicus brief for Michigan.
He says under current EPA rules any ship that claims it doesn’t have
ballast can, in fact, issue discharge into the water.


“Now we know that right now and on any given day, about 85 to 90
percent of these ships claim that they don’t have any ballast on board.
That’s a claim that stretches credulity, quite simply because all ships
need ballast if they don’t have cargo.”


The National Oceanic and Atmospheric Administration estimates that it
costs 45 million dollars a year just to control zebra mussels and sea
lampreys in the Great Lakes. Cox and the seven other Great Lakes
Attorneys General say the EPA must do more to protect the waters from
invasive species. The AGs have filed eight separate amicus briefs
supporting the case against the government. For the Great Lakes Radio
Consortium, I’m Celeste Headlee.

Shining Light on Women Astronomers

  • Matt Linke, the creator of "Women in Astronomy: A History" in the University of Michigan's Exhibit Museum planetarium.

Astronomy historically has been dominated by men, but women have left their mark over the years. A new planetarium show is trying to shine a little light on advances in astronomy that were made by women. And it could be coming soon to a planetarium near you. The Great Lakes Radio Consortium’s Tamar Charney reports: