Ongoing climate change and projected increases in wildfire activity will fundamentally alter subalpine forest landscapes of the Greater Yellowstone Ecosystem, from the processes that dominate ecosystem function to the scenic vistas that welcome visitors to the area. In this dissertation, I combined multiple lines of inquiry to explore ecosystem processes, tree regeneration, management scenarios, and science communication strategies in postfire landscapes of Greater Yellowstone. I asked (1) how ecosystem nitrogen pools change over time and vary among stands after stand-replacing fire, (2) how rugged terrain affects fire patterns and postfire tree regeneration, (3) if management interventions can sustain some tree regeneration throughout the 21st century, and (4) whether photorealistic representations of possible future landscapes based on process-based simulation models effectively communicate climate change effects. In young forests 35 years after stand-replacing fire, the nitrogen cycle was strongly shaped by differences in aboveground tree biomass and productivity that resulted from variation in postfire establishment density. From 25 to 35 years postfire, aboveground nitrogen pools increased without commensurate declines in soil nitrogen pools, and nitrogen did not appear to constrain primary productivity. Across subalpine landscapes, areas of high-severity fire were smaller in rugged terrain, and rugged terrain catalyzed changes in forest structure and composition by promoting postfire tree regeneration of some regionally dominant conifer species. In a landscape at risk of losing its fire-sensitive conifers, process-based simulation models suggest that strategically excluding fire from portions of the landscape can enhance postfire regeneration of relatively cold and wet adapted conifers as the climate becomes warmer and drier. Yet, simulation models also project that forested area will decline throughout the 21st century. Visualizing what future landscapes with less forested area might look like effectively conveyed the magnitude of projected forest loss and increased perceptions of climate change effects among visitors to Greater Yellowstone. Collectively, these studies highlight that forests may persist as the climate changes if fires retain key characteristics of the historical fire regime that shaped subalpine forests for millennia while underscoring the magnitude of potential change in the decades ahead.