Pests and diseases of forest biocenoses of specially protected natural areas of the Republic of Karelia

The results of a four-year (2017–2020) study of the phytosanitary state of forest biocenoses of specially protected natural areas (SPNA) of the Republic of Karelia are presented. Comprehensive research work was carried out in 2 reserves (Kivach and Kostomukshsky) and 2 national parks (Vodlozersky and Paanajarvi). In all protected areas, the presence of the bark beetle Ips typographus (Linnaeus, 1758) was recorded with its largest number in forest areas with disturbed stability (fires and windfalls). Beetles of the genus Monochamus Dejean, 1821 are also detected in all protected areas, but the largest number of the species M. sutor (Linnaeus, 1758), M. urussovi (Fisch., 1806), M. galloprovincialis (Oliv., 1795) are registered in the nature reserve “Kivach” and the national park (NP) “Vodlozersky”. Siberian silk moth Dendrolimus sibiricus Tschetw. and the gypsy moth Lymantria dispar (Linnaeus, 1758) were not detected in the studied SPNAs. In wood samples of coniferous species of European spruce (Picea abies) and Scotch pine (Pinus sylvestris) in the NP “Vodlozersky” a weakly pathogenic species of pinewood nematode was revealed Bursaphelenchus mucronatus (Mamiya & Enda, 1979). Among mycotic diseases, a wide spreading of the needle cast of pine Lophodermium pinastri (Schrad.) Chev., 1826 is noted.

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