Former PaqLab postdoc Kaisa Rissanen has just published an article in Urban Forestry & Urban Greening on her urban tree water use project which undertaken by the Urban forest research chair in 2020 and 2021. She and her research collegues examined how water use and status of urban trees vary between parks and streets in Montreal, Canada, under different microclimates and levels of impervious surfaces. Over two growing seasons, researchers found that park trees showed higher water potential and sap flow early in the summer but became more vulnerable to dry conditions later, experiencing reduced water use. In contrast, street trees maintained more stable water potential and sap flow, likely due to better water access or acclimation. These findings highlight how urban environments influence tree resilience to drought.

Follow the link below to consult the full article.