Trees in cities are already under quite significant stress and we anticipate that under climate change, conditions will be more difficult, including higher temperatures and more frequent droughts. Assisted migration is a proposed strategy in natural forests to help forests cope with these changes. Assisted migration is the movement of species to new locations that should better match their adaptation to a future climate. We want to start an assisted migration approach in the city as well. We are working with the City of Quebec to identify the species that would be more adapted to future climate conditions in a context of higher temperatures and more frequent and intense drought. We are also developing a social component in this project.
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A new NSERC Alliance Mission project, based at University of Toronto (Sean Thomas) addresses GHG emissions associated with urban waste and in urban tree trenches, in several cities across Canada (Toronto, Quebec City, Mississauga and Edmonton). The project evaluates hotspots of emissions while working to mitigate these problems using biochar as an amendment to improve carbon sequestration in urban soils, reduce direct GHG emissions and increase the growth of urban vegetation and its resilience to stress.
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