In this fourth interview of the sixth season, we talk with Kai Rains, Research Associate Professor in the USF School of Geosciences, about her research on plant ecology and how they can be used to understand an entire ecosystem.   More about Kai can be found here: Selected Works Google Scholar USF Ecohydrology Webpage USF Water Institute   Calling: Earth is a production of the USF Libraries in cooperation with the USF School of Geosciences, as well as other associated departments.   Questions, comments, and any other feedback can be directed to [email protected].