Loading
Search
NEWS STORIES

Another option? Studying weevils' ability to control invasive species in Northwoods lakesSubmitted: 08/19/2014

Ben Meyer
Executive Producer
bmeyer@wjfw.com


BOULDER JUNCTION - The problem of invasive Eurasian Watermilfoil in Northwoods lakes never seems to stop.

Lake groups can cut it, but it often grows back.

Chemical treatments often work, but they put artificial ingredients into lakes.

What if there was another option?

We found one group on the hunt for one.

"We're on Boot Lake," Nick Winter says as we motor onto the water body near Eagle River.

The Lakeland Union High School graduate and current Minnesota-Duluth undergrad loves spending days on the lake.

"It's kind of fun to be around people that are as passionate about environmental problems as you are," he says.

Nick and two other college students are working on a study through the UW-Madison Trout Lake Station in Boulder Junction.

Everything they do revolves around creatures only a few millimeters long.

"A weevil is a small insect and it's aquatic, so it lives underwater," Susan Knight explains.

She leads the project, which studies what impact these weevils have on invasive Eurasian Watermilfoil.

"They burrow down into the stem and eat their way down the stem," Susan says. "As they're eating the stem, that is killing off at least the top of the plant."

On the boat, Nick helps put a handful of plants into a Ziploc bag.

"These are going to be the plants that we're going to use to search for weevils," he says.

Last year, thousands of weevils were set free in three test lakes.

Susan, Nick, and the team want to find out if they're effective in killing the invasive milfoil.

"It would be really nice to know that there is a biological control," Susan says. "Some means of control that is not chemical."

Besides just the sample stems, "we take a biomass sample," Nick explains, "so we go take a rake pull and get all of the biomass that we can off of that."

Then, all of the samples are shuttled back to the lab.

"We have a pan for all of the natives and a pan for just the Eurasian. They'll go into a big drying oven for a few days," Susan explains. "We think that weevils would be a success if we saw more natives and less Eurasian."

While part of the team weighs the dried biomass, others spend hours peering into microscopes.

"It's kind of a necessary evil," Nick says about the lab work, laughing. "This is where we get all of the important information for our study."

"They will examine those plants to see whether or not there are weevils at any life stage: eggs, larva, pupae, and adults," Susan says.

The team picks out and preserves samples of the insects in all four stages.

They're the focus of all of the effort leading up to what Northwoods researchers hope is a firm answer.

"If we could get a clear-cut result and say, weevils did or did not have any effect on the biomass, that would be ideal," Susan says.

They've still got plenty of data collection and number-crunching left to do before they find that answer.

But until then, on the water is not a bad place to spend a college summer.

"I feel like what we're doing is kind of like trailblazing," Nick says proudly. "It's a big project."

Text Size: + Increase | Decrease -
| Print Story | Email Story
Sponsored in part by HodagSports.com





 IN OTHER NEWS
Tomahawk holds annual car show Submitted: 05/29/2016

TOMAHAWK - Car enthusiasts flocked to Tomahawk Sunday for the Main Street Memories car show.

The 22nd annual car show attracted cars and visitors from all over.

The streets of Tomahawk were filled with more than 200 cars of all different kinds. Main Street Memories car show is a Memorial Day tradition.

"You know 22 years going strong, and we're proud of it," said Tomahawk Main Street director Christine Vorpagel. "Tomahawk Main Street, we're all about historic preservation and sustainable development."

For many spectators, car shows are another way of learning about American history.

+ Read More

RHINELANDER - You can only learn so much reading from a book or sitting behind a desk.

So Friday, Crescent Elementary School kindergartners got out of their classrooms and into Rhinelander. The students learned about their community they see every day, but might not fully understand.

"The goal today was to get the kindergartners out throughout Rhinelander to see the businesses and what type career opportunities," said kindergarten teacher Julie Gerth.

With the help of Partners in Education and a Hodag School Foundation grant, the students visited Grace Lodge assisted living, Covantage Credit Union, Trig's and the courthouse.

The kids also got to see a firetruck, police car, and a public works vehicle at Pioneer Park. The field trip was designed to show off what the community can offer them now, and in their futures.

+ Read More

MERRILL - Steven Jopek carries a number of memories with him on Memorial Day.

"This will be our 9th Memorial Day where he hasn't been here," said Steven.

This weekend marked the 10th anniversary of the last time he saw his brother, Ryan, in person.

"He would be 30 on June on 1st," said Ryan's sister Jessica Holmgren.

+ Read More

MARATHON COUNTY - Firefighters call a Town of Berlin house a total loss after a fire destroyed it early Sunday morning.

According to the Marathon County Sheriff's Office Facebook page, crews got a call around 1:40 a.m. to the 11,000 block of Naugart Drive. When they got there, the house was totally up in flames.Several surrounding fire departments were called in to help.

No one was hurt. The house is valued at more than $100,000. 

Investigators don't think the cause of the fire was anything suspicious, but they are still investigating. 

+ Read More

NORTHWOODS - Memorial Day Weekend means the return of snowbirds and tourists.

Tourism is a big industry here in the Northwoods.

Many businesses have reopened for the summer, but the people coming to the Northwoods aren't just from the surrounding states.

+ Read More

MARINETTE COUNTY - A 90-year-old man died in an ATV crash in Marinette County late Saturday afternoon.

According to the Marinette County Sheriff's Office, it happened private property north of Newton Lake in the Town of Athelstane.

90-year-old James Bosanny was driving the ATV with his 64-year-old son, James Bosanny, Jr., on board. He lost control on a small hill after hitting a plow before the ATV accelerated and hit a tree. They both were thrown off the ATV. The 90-year-old died at the scene.Crews took the son first to Bay Area Medical Center in Marinette and then later taken to a hospital in Green Bay for serious injuries.

The sheriff's office says neither was wearing a helmet. Police don't think alcohol or speed played a part in the crash. 

Crews are still investigating. James Bosanny, Sr., was from Monroe, Wisconsin, and his son, James Bosanny, Jr., was from Hortonville, Wisconsin. 

+ Read More

RHINELANDER - In between the rain Sunday, people got outside and on the water.

Mel's Trading Post in Rhinelander held its annual Paddle Sport Demo Day at Hodag Park.

People were able to test out kayaks, canoes, and paddle boards for free.

The owner of Mel's trading post, Mitch Mode, likes this day not only try and sell some equipment but to also get feedback from people about the different boats.

+ Read More
+ More General News
Search: 




Click Here