Kaisa Rissanen (former postdoc) has just published her findings on the acclimation of urban Celtis occidententalis to their growth environment through changes in vessel anatomy, alongside her colleagues Valentina Vitali (former postdoc), Daniel Kneeshaw (research chair collaborator) and Alain Paquette. 

The study examined how urban trees acclimate to their environment by adjusting their vessel anatomy. Researchers analyzed the early wood vessel traits of Celtis occidentalis in parks, residential streets, and central streets in Montreal. They found that park trees had larger vessels suited for efficient water transport, while central street trees had smaller, more frequent vessels, making them more resistant to drought. Residential street trees showed intermediate traits. These findings suggest that urban trees adapt their hydraulic traits to different microclimates, shedding light on their resilience and responses to urban stressors.

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