Walker’s research focuses on the impacts of climate change and disturbance from wildfires on tundra and boreal forest ecosystems. She has experience in fire ecology and using dendrochronology techniques to assess climate change impacts on ecosystem resilience and post-fire succession. Dr. Walker is currently working on the NASA Arctic Boreal Research project to study severe fires and the loss of old carbon from boreal forest and arctic tundra soils.
Walker XJ, Baltzer JL, Cumming SG, Day NJ, Ebert C, Goetz SJ, Johnstone JF, Potter S, Rogers BM, Schuur EAG, Turetsky MR, Mack MC. 2018. Increasing wildfires threaten historic carbon sink of boreal forest soils. Nature. In press.
Walker XJ, Rogers BM, Baltzer JL, Cumming SG, Day NJ, Goetz SJ, Johnstone JF, Schuur EAG, Turetsky MR, Mack MC. 2018. Cross-scale controls on carbon emissions from boreal forest megafires. Global Change Biology, 24(9): 4251-4265. doi:0.1111/gcb.12893
Walker XJ, Baltzer JL, Cumming SG, Day NJ, Johnstone JF, Rogers BM, Solvik K, Turetsky MR, Mack MC. 2018. Soil organic layer combustion in boreal black spruce and jack pine stands of the Northwest Territories, Canada. Int J Wildland Fire 27:125–34.