Slowed aquatic invasion coincides with intensified research and prevention in Minnesota, USA

New aquatic invasions in Minnesota, USA slowed starting around 2015 as prevention investment intensified, and simulations suggest prevention reduced new invasions of two high-priority AIS by 20–53% over ten years.

• Why it matters: Prevention is cost-effective, but proving it worked requires counterfactual estimates of harms that did not occur and linking those reductions to prevention actions.
• What they did: The team quantified invasion rates over time in Minnesota while also running mechanistic simulations using real boater movement and boat inspection effectiveness data to estimate impacts on two high-priority AIS.
• The result: The invasion slowdown coincided with increased prevention spending, and the simulations suggest prevention may have reduced new invasions of the two AIS by 20–53% across a ten-year period, supporting long-term statewide prevention, monitoring, and research.

AI summary of the abstract · may contain errors · not medical advice · read the paper.