Patricia Westerford is a fictional character from the novel "The Overstory" by Richard Powers. She is a scientist who studies trees and their communication systems, focusing on how they interact with one another through underground networks. Her research highlights the importance of trees in ecosystems and their ability to share resources and information. Throughout the story, Patricia's work emphasizes the interconnectedness of nature and the impact of human actions on the environment. Her character serves as a voice for environmental awareness and the need for conservation, illustrating the profound relationship between humans and the natural world.