Open AccessStudy results of siberian moth (Dendrolimus sibiricus Tschetw.) outbreak foci in Vasyugan forestry of Tomsk region
Author(s) -
Н. Б. Денисова,
А. А. Соболев,
U.S. Shipinskaya
Publication year - 2020
Publication title -
lesnoj vestnik
Language(s) - English
Resource type - Journals
ISSN - 2542-1468
DOI - 10.18698/2542-1468-2020-6-65-72
Subject(s) - outbreak , pest analysis , geography , population , forestry , ecology , range (aeronautics) , biology , demography , botany , materials science , virology , sociology , composite material
This article presents the results of the inventory of outbreak foci of D. sibiricus in the Vasyugan forestry, Tomsk region. The purpose of the article was reflecting the state of the pest population and assessing a threat of defoliation of forests. Pests were measured by caterpillars using the method of knocking on model trees. According to the results, 29 isolated foci were identified, including 9 foci requiring actions to target pests. The threat of defoliation of forest areas in these foci was 76,3 %. The article gave us the examples of calculation of population characteristics determination in one foci using the conversion factors based (Ilyinsky, 1965). Defoliation, weather conditions in 2018 and development of entomophage have had a negative impact on the population. Also there is a risk of the pest spreading beyond its natural habitats. Möykkynen and Pukkala in the article «Modelling of the spread of a potential invasive pest, the Siberian moth in Europe» makes a forecast of D. sibiricus resettlement in Europe, Belarus and the Baltic States will be most at risk of settlement. Also, of particular concern are the prerequisites for the occurrence of pest outbreaks in the European part of Russia, therefore, in order to prevent insect resettlement beyond the boundaries of their range, it is necessary to conduct forest-pathological monitoring of populations on the territory of existing outbreaks and in places of primary reservation.