Assessment of Aggressiveness of Ganoderma Resinaceum (Boud.). Pathogenesis and Influence on Wood Decomposition of Pedunculate Oak (Quercus robur L.)

Ganoderma resinaceum, which belongs to the Ganodermataceae family, is a fungus that is rare in Poland, and occurs mainly in green areas. In the light of the lack of literature reports concerning the degree of aggressiveness of the fungus in relation to the host and the decomposition rate of wood, we carried out an in-depth study of two trees on a new, previously unlisted site in Poland. We performed multilevel instrumental studies with the use of an acoustic tomograph and a resistograph in order to establish the degree of decomposition of the wood tissue of pedunculate oaks, combined with a visual assessment conducted using the VTA method.