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Abstract
BackgroundThe diversity of macrofungi in the vicinities of Khanty-Mansiysk (Yugra, Russia) was surveyed using a method of permanent sampling plots. Ten plots, each consisting of a number of micro-plots, were established in several different communities ranging from old-growth mixed taiga forest to its derivatives in cutting succession and bogged areas. For more complete registration of the mycota, plots were supplemented with random walking routes directly nearby. Survey results were subjected to various quantitative analyses which allowed not only to evaluate the diversity of fungi but also to obtain valuable information on occurrence, abundance and ecology of individual species as well as community structure and its dynamics in the course of ecological succession. The paper reports the results of the first year of observations.New information460 species of terrestrial macrofungi revealed in a poorly explored area in middle taiga of West Siberia. The plot-based study revealed differences between communities of terrestrial macrofungi of old coniferous forests, their after-cutting secondary formations and bogged stages. The survey allowed to reveal records of 3 species listed in the Red Data Book of Russia and 9 species listed in the Red Data Book of Yugra.
Highlights
Terrestrial macrofungi are a crucial component of boreal forest ecosystems playing several significant roles, the most notable being their saprotrophic function and mycorrhizal symbiosis with trees
The survey in a poorly explored area in Khanty-Mansiysk vicinities revealed 460 species of terrestrial macrofungi; 284 of them were recorded for the first time for Khanty-Mansiysk vicinities
The species accumulation curve built for collective sampling of all plots did not reach an asymptote, the species found during the random survey filled the gap to reach the estimated species number
Summary
Terrestrial macrofungi are a crucial component of boreal forest ecosystems playing several significant roles, the most notable being their saprotrophic function and mycorrhizal symbiosis with trees. The species diversity of terrestrial macrofungi may be several times higher compared to that of plants in coniferous forests and the biomass of mycelium in forest floor is comparable to that of the forest undergrowth (Burova 1986). Terrestrial macrofungi are an important food source of insects and other forest animals; a number of edible and medicinal species are commercially important for man. Survey results were subjected to various quantitative analyses which allowed to evaluate the diversity of fungi and to obtain valuable information on occurrence, abundance and ecology of individual species as well as community structure and its dynamics in the course of ecological succession.
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