Table 3. Compilation of the tree species and the number of individuals found in the study plots. The age of the species is presented as youngest and oldest individual. The performance of the trees differed between single-stemmed trees and multi-stemmed trees. Vertical distribution of trees divided into upper tree layer and lower tree layer. Height (m) and trunk diameter growth (DBH) (cm) are presented for the smallest and largest individuals within the species. The species are divided into two groups based on age and growth (height and DBH), where Group 1 includes the species with their main presence in river valleys or on northfacing slopes, whereas on steep south-facing slopes they are small and/or slow-growing individuals. Group 2 includes species which develop into tall, old trees on steep south-facing slopes at altitudes between 1000 and 1500 m asl.