Figure 1

Map of the studied mounds, and photos of the four basic mound types (based on the PCA analysis of the predictors describing the physical properties and vegetation of the mounds and the composition of the neighbouring landscape). The map is based on satellite imagery provided by the ESRI basemap function. The map was created by using the ESRI ARCGIS 10.2 software (ver 2.14.19; http://www.qgis.org). Photographs were taken by B. Deák.