Just in case anyone missed or couldn't make these online events. Here are the YouTube links to the presentations.
American Signal Crayfish: A Losing Battle? - https://www.youtube.com/watch?v=deXEbJFH7KI
SmartRivers: Using Freshwater Invertebrates to Monitor River Health - https://www.youtube.com/watch?v=UDPft5AI6gM