Last week’s Science Friday on NPR, broadcasting from the University of Notre Dame, included an interviewwith David Lodge, a biologist who has been a key investigator in assessing the pathways and risks of aquatic invasive species in the Great Lakes. In fact, the interview focused on Lodge as an “environmental detective” due to his work with environmental DNA. This technique allows invasive species trackers to detect the trace presence of a fish through water sampling. Most recently, Asian carp DNA has been found in the Kalamazoo River in Michigan.
But, in the struggle to cope with these invaders, prevention is crucial. The interview also

touched on extensive work at Notre Dame to develop species profiles and risk assessment tools. This research helped inform efforts in Indiana to be proactive, and led to a ban on 28 plant species in the state.

From a 2012 HELMarticle:
To determine which plants imported for the aquarium and water garden trades posed the greatest threat to the state’s waterways, the Indiana Department of Natural Resources (IN DNR) relied on a risk assessment tool developed by the Aquatic Plant Working Group. The group was formed, organized, and facilitated by Illinois-Indiana Sea Grant at the request of IN DNR and included representatives from the aquatic plant industry, aquarium and water garden hobbyists, state agencies, academia, and non-governmental organizations. They used information provided by University of Notre Dame researchers to develop a tool that evaluates a plant based on factors such as its history of invasion, its ability to survive in Indiana habitats, and how difficult it is to control.
Many of the plants that made the list have been used in aquariums or water gardens in Indiana for years. Others have already been discovered in waterways throughout the state, sparking large-scale eradication projects. For example, efforts to remove the fast-growing weed Hydrilla verticillata from Lake Manitou have been ongoing for more than six years and cost the state millions of dollars. Hydrilla is believed to have entered Lake Manitou through trade.
This work has not been limited to Indiana plants. For starters, in 2013, Illinois added the designated Indiana plants into its Injurious Species List. And there’s more:
The success of the risk assessment tool in Indiana has sparked interest from officials in the Great Lakes region and at a national level. In fact, researchers at the University of Notre Dame (and Loyola University Chicago) were awarded a three-year grant from the U.S. EPA Great Lakes Restoration Initiative to develop risk assessment tools for commercially sold fish, mollusks, crustaceans, reptiles, and amphibians. IISG’s aquatic invasive species outreach specialists are working with researchers to coordinate and facilitate regular working meetings with state and province resource managers to develop a single set of tools that can be used in each of the eight states and two provinces that make up the Great Lakes region.

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Exciting news! The call for sessions for the 2026 Emerging Contaminants in the Environment Conference has been extended! We are excited to offer the opportunity to propose a speaker or panel session during the 2026 Emerging Contaminants in the Environment Conference April 28-29.  The conference will feature traditional 15-minute presentations and a poster session on the latest in emerging contaminant research, policies, and outreach in the soil, water, and air.The deadline to propose a session is September 30, 2025.Learn more at go.illinois.edu/ecec or the link in bio
Stay safe and have fun this Fourth of July with these 5 water safety tips! Click the link in bio to learn more ways to keep yourself and others safe as you enjoy the Lake Michigan beaches this holiday.
Four science educators from Illinois and Indiana have been selected for the 2025 Shipboard Science Immersion on Lake Michigan July 7-13. The educators will spend a full week alongside researchers aboard the EPA research vessel Lake Guardian. Afterwards, they will bring Great Lakes science back to their classroom. Learn more and meet the four incredible teachers representing Illinois and Indiana at the link in bio.
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