Fig. 1.
The study landscape in the Stubai valley, Tyrol, Austria. The forest area studied is highlighted in color, indicating the variation in current forest canopy cover. The topography of the landscape is illustrated via 400 m isolines. The insert map gives the location of the landscape in Europe. The insert photo shows the northern portion of the valley as seen from the southern flank. Insert photo credit: Matthias Frank CC BY-SA 4.0. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)