Abstract
Climate change has a major impact on forest pest outbreaks. In recent years, there have been several major climatic events in the South Kuril Islands that have cascaded impacts on forest pests. One of these effects was exerted by the typhoon of 2014, after which the coniferous forests began to dry out in the Kurilskiy Nature Reserve, as well as in the protected zone. Drying of forests on the island of Kunashir is one of the main problems. The aim of this study was to detect and study the sites of attack of eight-dentated bark beetle (Ips typographus) in the reserve, laying test areas in the distribution foci. This study showed that spruce aged 50-70 are mainly susceptible to the attacks of eight-dentated bark beetle. However, it is worth noting that the attack of the bark beetle was seen more on Sakhalin spruce (Piceaglehnii), less - on Yezo spruce (Piceajezoensis) in the places where the test plots were laid. In addition, the study has identified significant differences between healthy, weakened trees and neighboring dead trees attacked by Ipstypographus. These differences were most pronounced in: individual shading, collective shading, and distance and tier factors. Forest pests have not been relatively studied previously. This study will give a new understanding of its ecology, as well as practical opportunities for its management
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