Julie’s research interests span submicron to regional scales and leverage multi-scale mechanistic and process knowledge to study soil organic matter dynamics at patch to landscape scales. She has investigated soil biogeochemical responses to changes in vegetation, land management, atmospheric carbon dioxide concentrations, and climate in grassland, forest, tundra, and agricultural ecosystems across semiarid, temperate, boreal, and arctic regions. Presently, her research is focused on factors affecting the distribution, composition, and decomposability of organic matter stored in soils of the permafrost region as well as the climate adaptation and sustainability of perennial bioenergy crops across continental-scale environmental gradients.