When does a tree's sap start flowing, when do trees get to work in the morning, when does their trunk grow most? For a year, the artists of the Anaïs Berck collective collaborated with three Scots Pines in three nature reserves in Flanders, with the intention of designing tree clocks. They recorded their movements using sensors that measure the expansion and contraction of the trunk, CO2 absorption, air temperature and humidity, and sunlight.
Although the three trees live in similar habitats — the sandy and heathland soil of the Kalmthoutse Heide, Bosland National Park, and De Liereman — their internal clocks show significant differences. Should that be surprising? Read more