Recording Available - Bethke Defense Apr 3, 2019 7:15 pm by Renee Gracon Share on Facebook Tweet Email The recording of the capstone defense by Tricia Bethke, titled: AMYNTHAS SPP. Impacts on Tree Seedlings and Forest is available for viewing. Please contact Renee Gracon (gracon1@illinois.edu) if you would like the link. Share on Facebook Tweet Email