Charlie Halpern is a plant community ecologist who studies forests and meadows of the Pacific Northwest. He explores the roles of disturbance (both natural and human-caused), climate change, and species’ interactions in the dynamics of plant communities in time and space. He also studies the consequences of different forest management strategies for plant species diversity and community structure. His work combines long-term observations (which include multi-decadal data sets) with small- and large-scale experiments.