Changes in consortial links of aphyllophoroid fungi and Quercus robur L. in the recreational forests of the green zone of city

  • V. V. Lavrov Bila Tserkva National Agrarian University
  • O. I. Blinkova National University of Life and Environmental Sciences of Ukraine
  • O. M. Ivanenko Institute for Evolutionary Ecology NAS of Ukraine
  • Z. V. Polyschuk Bila Tserkva National Agrarian University
Keywords: recreational forests, Quercus robur L., aphyllophoroid fungi, consortial links, recreational transformation

Abstract

Recreational degradation of forest ecosystems of the green zone of the town Uman was described on the example of the forest array «Belogrudivska Dacha». The vitality and health conditions of Quercus robur L. and species, systematic, trophic, spatial compositions of xylotrophic fungi were investigated. Changes in the compositions of xylotrophic fungi and Q. robur were indicated an intensification of degradation processes in fresh maple oak. However, the entwinement between the development and distribution of xylotrophic fungi with the degree of damage and drying of trees, the intensity of recreational load did not found. This effect was indirect. The consorts links of Q. robur and xylotrophic fungi essentially depend on the amount of available substrate and evaporation from the soil surface, density of canopy, the projective coverage of herb stratum, in general, the forestry and mensurational characteristics of the stands.  These components determine the development of forest ecosystems, the formation of myco-horizons of trees, the rate of accumulation of wood of various categories of substrates, which favorable for the settlement and development of xylotrophic fungi, certain levels of organization of consorts. The deterioration of the conditions of growth and development of Q. robur in fresh maple oak, drying and degradation of canopy cause changes in the composition of the consorts of these trees and xylotrophic fungi due to violation of the conditions of the forest environment, changes in the quantitative and qualitative characteristics of the substrates, their distribution in time and space. Recreational impact was essentially neutralized due to the complex composition and large buffer capacity of the forest ecosystem, a large number of mechanisms for its sustainability, and the ability to quickly restore degraded elements and links of the forest. Highly productive young and medieval medium-attractive woodlands of Q. robur of recreational forests of the woodland part of the green zone of city Uman, affected a moderate and medium recreational impact. The territory of the tract has the first (75 %) and second (25 %) stage of recreational degradation. This was primarily due to the close location of the city, suburban villages, main transport networks and the availability of forest for the population. Species diversity of investigated fungi in all experimental plots acquired rather high values. Such indicators testified to the stability of xylomycocenosis to the existing recreational impact, unlike other, more vulnerable structural and functional components of the forest ecosystem: herb stratum, underbrush, undergrowth, soil surface. At all studied experimental plots of the tract, the best development of xylomycobiota was in the trees of the highest Kraft classes. According to the state categories in the investigated plots, weakened and strongly weakened trees were prevailed, in which the maximum number of species and findings of fungi was detected. The findings of xylotrophic fungi on the recently dead stands was minimal. The analysis of the vegetation under ombraregime has shown that subaridophytes and subomorophytes were predominated. In the medium- and low-transformed experimental plots, the magnitude of the ecological amplitude under ombraregime is slightly higher than that of the highly transformated experimental plot. This indicates a greater evaporation from the surface of the soil with an increase in the degree of recreational transformation. A significant change in the forest environment and substratum fund due to the intense degradation of the ecosystem may limit the development and spread of xylotrophic fungi.

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Published
2017-09-12
How to Cite
Lavrov, V., Blinkova, O., Ivanenko, O., & Polyschuk, Z. (2017). Changes in consortial links of aphyllophoroid fungi and Quercus robur L. in the recreational forests of the green zone of city. Ecology and Noospherology, 28(3-4), 5-20. https://doi.org/https://doi.org/10.15421/031711