Cores of mediterranean trees

Reference collections. As a result of the participation in the Forest Ecological Inventory of Catalonia (IEFC; 1988-1998), the Forestry and Fire Dynamics Group preserves more than 7,500 cores of typical trees of the Mediterranean area. The collection comprises two core types: partial, where only a small part of the trunk has been extracted to estimate the growth in recent years, and entire cores, those with the whole series of time (up to the centre of the trunk). In total, representatives trees, one of each diameter class, were extracted -from the 5 cm thickness of the trunk- in some 2,000 plots and of all type of species from Catalonia, except holm oak (Quercus ilex) and cork oak (Quercus suber) due to the nature of the wood of these species, since they do not have a typical growth ring. This material has already been used in different scientific articles, to assess forest production, forest age, average growth, etc. and can be found in Can Balasc.