Acknowledgements:
We thank the “Waldlabor Zürich” project (Martin Brüllhardt – www.waldlabor.ch) as well as the forest owner Jakob Heusser for their cooperation and support. The project was funded through the “Waldlabor Project Grant” 4.20.P01 awarded to Marius Floriancic. We acknowledge support during data collection and laboratory work from the technical staff and student helpers working at the “Waldlabor” ecohydrology field site (Lena Straumann, Elisa Hage, Anna Lena Könz, Maria Grundmann, Lara Virsik, Stefano Martinetti, Fabian Strittmatter, Adrian Kreiner, Lucien Biolley).