Home – Home – Jornals – Flora and Vegetation of Asian Russia 2020 number 4

Due to the climate warming in the Arctic, natural zones are shifting to the north, while typical forest species different groups of living organisms are increasing ability in areas where previously the basic positions were occupied by the Arctic-Alpine species (Walker et al., 2012; Shiryaev et al., 2019; Myers-Smith et al., 2020). Th e 40-years long dynamic on dominant species abundance of wood-inhabiting Poroid fungi in the southern Yamal Peninsula (Yamal-Nenets Autonomous District) due to climate change was studied. The data on fungi abundance are based on the results obtained by Prof. V.A. Mukhin (1993) in the early 1980s. Repeated syntopic studies were carried out in 2018 and 2019. Changes in the abundance were studied by two methods: direct - implying the registration of accounting units (fruiting bodies) of fungi for an area (specimens/hectare); and indirect - an estimation of the proportion of woody substrates inhabited by fungi (%). Both methods showed similar results. In areas that 40 years ago were characterized by the “forest-tundra” abundance of boreal fungi, the abundance has changed and corresponds to the “northern boreal” indicators. Over the 40-year period, the average annual air temperature in the study area increased by 0.8 °С, and therefore the “forest-tundra” abundance of Poroid fungi species shifted to the north. For fungi growing on deciduous wood in zonal habitats, the displacement averaged 47 km/1 °С, while for those associated with conifers - 31.5 km/1 °С. This result indicates that Poroid fungi are clear indicators of ongoing climate warming in the Arctic.