Search and Access Archived Conference Presentations

2018 ASHS Annual Conference

If Waterlettuce Is Native, Why Is It Taking over?

Friday, August 3, 2018: 10:30 AM
Jefferson East (Washington Hilton)
Lyn A Gettys, University of Florida Ft Lauderdale Research and Education Center, Davie, FL
Arguments for why we consider Pistia stratiotes to be an exotic species despite its presence in fossil records will be the focus of this lead presentation. This talk will uncover some of the buried history of this invasive species, how it came to be such a problem despite its native status, and why things changed. The speaker will discuss the implications of how such burial of a native’s background can create false impressions in the face of the desperate need for control.

Why this speaker? Dr. Lyn Gettys is an Assistant Professor of Agronomy (aquatic and wetland plants) at the University of Florida IFAS FLREC in Davie, FL. She has developed methods to improve establishment of native aquatic plants (e.g., Vallisneria americana, Schoenoplectus californicus, and others) and conducts research on techniques to manage exotic aquatic invaders, including Hydrilla verticillata, Eichhornia crassipes and Rotala rotundifolia. As a result of her work using integrated pest management (IPM) for control of invasive weeds, Lyn has expertise in non-herbicidal plant management and is well-suited to outline the fauna that should co-occur with waterlettuce – and keep its growth in check – if the plant truly is native to Florida.