Intracenotic patterns in damage of <i>Abies sibirica</i> Ledeb.-dominated stands by infectious diseases in the south of Central Siberia

Abies sibirica Ledeb.-dominated stands degradation is of special concern. Nevertheless, insufficient attention paid to the role pathogens in this process. The aim present study assess coenotic infectious diseases fir-dominated south Central Siberia. research was based on a forest pathological examination conducted A. sibirica-dominated Krasnoyarsk Krai. cenotic identified unequal. Stem decay and fir broom rust are typical that weaken trees induce rotten windsnap accumulation. Fir randomly affects different age size. prevalence studied reached 10% or more. most hazard bacterial soft rot root rot. Bacterial damages up 20% causes their gradual dieback. main cause tree mortality rot-causing fungi lead rapid dieback status. In synergy with other factors, acts as significant endogenous factor current reorganization coniferous ecosystems