Дереворазрушающие грибы-биотрофы старовозрастных хвойных древесных насаждений музея-заповедника «Парк Монрепо»

Abstract

In 2011–2013 phytopathologic health conditions of conifers trees in the oldgrowth Monrepos Park (Vyborg, Leningrad Region, Russia) was re-examined to analyze changes in the prevalence of the most common tree diseases and their pathogens in the historic park over a period of 1991–2011. The most common and harmful pathogens such as canker-cancerous and rot diseases were identified. Uneven and often sharp rise ofpathogens abundance at different sections of the park, their patchy distribution, expansion of their substrate specialization as well as increase in the species composition of plant pathogens were observed. It is suggested that the recreational stress Monrepos Park has the leading role in the qualitative and quantitive changes in composition of pathogens and reduction of biological sustainability of old-growth conifers trees.