Lars Anderson retired 5 years ago from the USDA where he was an Aquatic Weed Scientist; and he is currently working on creation of the Woodland Regional Park (north of Davis on CR 102, where the pond is at the edge of Woodland). He is part of a consortium that includes the City of Woodland, Tuleyome, the Science Center, and other individuals. They call it 'Science on the Urban Edge' and it is a very exciting project to hear about. (Volunteers and docents will be needed in Spring 2019. )
Since retiring, Lars has been assisting to improve aquatic weed management strategies at Lake Tahoe and the San Joaquin Delta system. Today's show includes a detailed discussion of how scientists are trying to keep invading plants from taking over Lake Tahoe -- including some experimental projects (like floating islands) being built to test new theories of water quality improvement techniques.
There's too much more to transcribe here. Just listen, already!