Her research studies center on plant physiological ecology and ecosystem ecology with an emphasis on the role of plants and soils in human-dominated and urban ecosystems. Her research focus is on the interactions between urban plants and atmospheric composition, pollution, local climate, and greenhouse gases. She is also on the Board of Advisors to the Editor, New Phytologist journal, Steering Committee, Biosphere-Atmosphere Stable Isotope Network (BASIN) and Steering Committee, Terrestrial Ecosystem Responses to Atmospheric and Climatic Change (TERACC) Network (Past member)