MICH. – Michigan’s Department of Environment, Great Lakes, and Energy is calling on residents to do their part to protect the state’s woods and waters by preventing the introduction of invasive species.

The state defines invasive species as a species that is not native and whose introduction can cause harm to Michigan’s economy, environment or human health.

There are many non-native species, however, that are not harmful and have positive effects on the state’s economy and lifestyle. That includes fruits, vegetables, field crops, livestock and domestic animals.

“Invasive species cause harm when they outcompete native species by reproducing and spreading rapidly in areas where they have no natural predators,” said Joanne Foreman, DNR invasive species communication specialist. “This can change the balance of ecosystems we rely on, like forests, rivers and lakes. As for economic impact, a 2021 study estimated that invasive species have cost North America over $26 billion per year since 2010.”

Invasive species, the state said, normally don’t move far on their own. Rather, they find their way with the help of people. Modern transportation brings goods, services, people and invasive species from all over the world.

Exotic pets sometimes escape or are released into the wild. Exotic plants are released as well. Invasive insects arrive by hitching a ride in wood packing materials or wood products. They have done irreparable damage to trees and forests native to Michigan.

Invasive species have a talent for colonizing new areas rapidly. Plants have seeds that catch on clothing or fur or are eaten and distributed by birds.

Oak wilt spores and emerald ash borer larvae have been transported to many places in Michigan on firewood. Zebra mussel larvae and invasive aquatic plants get from one lake to another on watercraft and trailers.

Here’s how you can help

Travel clean – After spending time outdoors, check for and remove mud, debris and plant materials from vehicles, clothing and gear before heading to your next destination.

Lend a hand – Connect with your local CISMA (Cooperative Invasive Species Management Areas) to learn the best ways to manage invasive species on your property.

Identify and report – Learn how to spot and report watch list species. You can do so by visiting michigan.gov/invasives.