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US3: The role and impact of fire in the Earth system across spatial and temporal scales
Recent record-breaking wildfires in the Arctic, boreal forests, the Mediterranean and, at the same time, human-driven decreases in burned area in savanna ecosystems show the need of an increased understanding of the drivers and impacts of fire regime changes under ongoing and future land management and climate changes. Fire is part of the Earth system since the evolution of terrestrial biomass 420 million years ago. Despite being a risk to many human societies today, fire has played an important role in human evolution and as a tool and target in land management for millennia. However, its role in biogeochemical cycles and ecosystem dynamics across various spatiotemporal scales is still poorly constrained, partly due to its complex feedbacks with climate and vegetation. The influence of fire on the atmosphere, vegetation, soil properties, hydrological and biogeochemical cycles and the impact on society require inter- to transdisciplinary research approaches.

This symposium aims to provide state-of-the-art perspectives on the feedbacks and impacts of fires from the different fields. Leading experts in fire observations and modelling as well as post-fire impacts on local to global and across temporal scales will provide insights on key processes, drivers and important links of fire in the natural and human-shaped environments.
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