Managing Midwestern aquatic invasions in a changing climate

Pilot work in Minnesota has shown that starry stonewort populations and growth patterns of can vary between years and between lakes in different locations. These patterns suggest that how starry stonewort invades a lake could be influenced by climatological factors such as ice-out date, growing season length, and average water temperature. If this is the case, then developing effective management strategies for starry stonewort requires a deeper and more specific understanding of how climate change will influence the invasion dynamics of the species. 

The project includes:

  • An empirical study of starry stonewort invasion dynamics in nine lakes across latitudinal gradients in Wisconsin, Minnesota, and Indiana.
  • Interviews with AIS managers and decision-makers in Wisconsin, Minnesota and Indiana to examine invasive species management perceptions and preferences as they relate to starry stonewort.
  • Modeling starry stonewort invasion patterns under a range of climate and management scenarios. 

This project will provide practical information on the ecology of starry stonewort, a summary of current stakeholder preferences around starry stonewort management, as well as an evaluation of optimal management strategies.

The study is one component of a larger research project that is funded by the Prepared for Environmental Change Grand Challenge initiative administered by the Environmental Resilience Institute at Indiana University

Project manager: Ranjan Muthukrishnan

Funded by: Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources

Project start date: 2019

Estimated project end date: 2021