Monitoring of ectomycorrhizal fungi in the sorrel spruce forest in the southern taiga of the Perm region

The monitoring of agarics in the Perm Region has been done since 1975 till the present time in the sorrel spruce forest (the southern taiga subzone). Research is conducted by a stationary method (the test area is 50 ×20 m) in three stages: I period - 1975-1977; II period - 1994-1996; III period - 2010-2012. By the present time, 214 species and intraspecific taxa of agarics have been found in the sorrel spruce forest, 80 of them (37.4 %) are ectomycorrhizal fungi. The fungi belong to 7 families and 18 genera. Families Cortinariaceae, Russulaceae and Boletaceae prevail, that is typical for a boreal area. The majority of species are in genera: Cortinarius (21 species), Russula (15), Lactarius (10), Amanita (7), that is typical for the southern taiga subzone. It is noted that the species composition of ectomycorrhizal fungi (Jaccard index×100: J = 32-46) changes over time more than the species composition of higher vascular plants. Ectomycorrhizal fungi are dominant by biomass and the number of basidioms. The relationship between diversity and productivity of ectomycorrhizal fungi with the main climatic indicators (May-September) was studied. It was found that the increase in the average monthly air temperature in June favors the "fruiting" of ectomycorrhizal fungi in August (rs = 0.67; p