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Department of Geography

Trees as witnesses of time

Trees can deposit pollutants in their tissues over decades and centuries, becoming witnesses to environ­mental pollution. In an interview with RSI, Paula Ballikaya and Paolo Cherubini explain what dendro­chrono­logy tells us about the environ­ment and human history.

Trees as witnesses of time

Gli alberi, testimoni del tempo (in Italian)
RSI, Radiotelevisione svizzera, 28.01.2023
Paula Ballikaya speaks from minute 15:10.


Paula Ballikaya, Ivano Brunner, Claudia Cocozza, Daniel Grolimund, Ralf Kaegi, Maria Elvira Murazzi, Marcus Schaub, Leonie C Schönbeck, Brian Sinnet, Paolo Cherubini, First evidence of nanoparticle uptake through leaves and roots in beech (Fagus sylvatica L.) and pine (Pinus sylvestris L.), Tree Physiology, 2022;, tpac117,

Weiterführende Informationen


Paula Ballikaya
PhD Candidate

Geochronology, Department of Geography, and Swiss Federal Research Institute WSL




Prof. Paolo Cherubini

Senior Scientist

Swiss Federal Research Institute WSL


Geochronology, GIUZ

Dendrosciences, WSL