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Points North

Points North: Outwitting invasives

Eric Calabro, Michigan Department of Environment, Great Lakes, and Energy


In some inland lakes invasive plants grow so thick, motor boats get stuck and you can’t fish or swim. 

One way to keep these invaders at bay is just starting to get traction in Michigan. It’s called "diver assisted suction harvesting," which might sound a little goofy. It involves a boat equipped with a vacuum, accompanied by a diver pulling up plants along the lakebed. 

And if you’ve visited a vineyard recently, you might have noticed some strange sounds coming from the fields. The noise is another ploy to outwit invasives.

Lexi Krupp reports on science and the environment. Previously, she worked for Gimlet Media where she helped the Science Vs team distinguish what's fact from what's not. Her work has appeared in Audubon, Popular Science, VICE, and elsewhere.