Polishchuk Z. Mikoindication of anthropogenic transformation of forest ecosystems in the Right-bank Forest-Steppe and Polissya of Ukraine

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0419U003556

Applicant for

Specialization

  • 03.00.16 - Екологія

11-07-2019

Specialized Academic Board

Д 26.376.01

Institute of plant protection NAAS

Essay

The object of research is anthropogenic transformation of the biotopes of various categories of forests in the Right-bank Forest-steppe and the Polissya of Ukraine. The purpose is to define, characterize and systematize the mycoindication signs of anthropogenic transformation of forest habitats by the peculiarities of the changes in the species composition, distribution and wood-destroying activity of xylotrophic fungi in the Right-bank Forest-steppe and Polissya of Ukraine; to develop a methodology for estimating anthropogenic disturbance of forest ecosystems taking into account the xylomycocomponent. On the example of oak and co-oak forest types in green areas of Kyiv, Bila Tserkva and Uman, it was explored the possibility of using the xylomycocomplex in improving the diagnostics of anthropogenic transformation of forest ecosystems. Changes in species composition, distribution of wood-destroying fungi and violations of the consortial relations “wood species – xylotrophs” in protective, recreational-and-healthy and nature protection forests affected by recreation, development and career extraction of granite are described. It was established that xylomycocenosis react less to recreational and technogenic loading, in contrast to more vulnerable components of forest ecosystems – grassy tier, undergrowth, understory, soil surface. Therefore, the mycoindication of changes in the forest environment should be used in the synecological triad “forest stand – grass cover – xylomycocomplex – forest stand”. This is confirmed by the correlation links between the decrease of the hydromorph percentage in the eco-morphic structure of the grass cover and the increase in the proportion of facultative parasite species in the xylomycocomplex (r = 0.63), as well as between the increase in the proportion of grass species with a mixed type of strategy and the increase in the number of xylotrophic parasites (r = 0.77). These links did not depend on the forestry and taxation characteristics and the functional purpose of damaged forests. Depending on the peculiarities and degree of forest biotopes anthropogenic transformation and the change of consortial relations, “wood species – xylotrophic fungi”, 37 species of xylotrophs-indicators of leaf and coniferous forest disturbances have been established and substantiated. The methodology of anthropogenic disturbance estimation of forest ecosystems by structure, distribution in ecosystem biotopes and activation of aphyllophoroid fungi has been developed, principles of its application in monitoring of forests are determined. Key words: forest ecosystems, biotopes, anthropogenic disturbance, mycoindication, xylotrophic fungi, species composition, distribution, consortial relations.

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