By Scout Nelson
National Invasive Species Awareness Week, starting Monday, February 24, aims to educate people about the spread of invasive species, their impact on ecosystems, and ongoing research to manage them.
Dr. Amy Morey, a research associate at the Minnesota Invasive Terrestrial Plants and Pests Center (MITPPC), explains how land-dwelling invasive species affect agriculture and natural environments. These species, including plants, insects, and microbes, compete with native species for resources and alter ecosystems. They can increase wildfire risks, affect water quality, and reduce soil fertility. Additionally, they pose a significant threat to crops and livestock, leading to economic losses.
Several invasive species are already a problem in Minnesota, with more expected in the future. Emerald ash borer, non-native earthworms, and oak wilt pathogen are damaging forests, while soybean aphids and spotted wing drosophila impact agricultural production. Some species, like the mountain pine beetle, have not yet spread widely, but researchers are working to prevent their establishment.
The brown marmorated stink bug (BMSB), an invasive insect found across the U.S., is a common sight during winter. It feeds on a variety of crops and seeks shelter indoors to survive the cold. Though it does not bite or sting, it emits an unpleasant odor. To prevent infestations, individuals can capture and freeze them or use a vacuum and dispose of them outdoors in freezing temperatures.
Gardeners should be mindful when purchasing plants, as many invasive species originate from the ornamental trade. Buying plants and seeds online can introduce harmful species. Checking plant names against invasive species lists and prioritizing native plants can help reduce the spread. The Minnesota Department of Agriculture offers resources on maintaining healthy gardens.
MITPPC is actively researching ways to control invasive species, including using remote sensing, eDNA detection, and biological control methods. Ongoing projects focus on preventing buckthorn spread, managing Dutch elm disease, and developing genetic tools to address agricultural pests. Subscribing to MITPPC’s newsletter provides updates on their latest research efforts.
Photo Credit: istock-fotokostic
Categories: Minnesota, Education