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Changes of the Ecological Conditions in the Báb Forest on the Basis of a Bioindication Method

Abstract This work analyses the changes of ecological conditions in the Báb forest on the basis of a bioindication method. The comparison is made between the phytocenological records from the years 1968-1969 and 2013 where permanent research plots (PRPs) were established in the forest coppi-ce and on clearcuts. In 2013, the amount of photophilous and thermophilic species increased mainly on the clearcut PRP and the amount of suboceanic taxa on PRP in the forest coppice. Moreover, there is also an increase of taxa like nitrogen-rich posts. On the other hand, the share of fresh soils indicators and acidophilous species significantly decreased. The change in the ratio of the econumbers of the observed ecofactors between the records from 1968-1969 and 2013 is caused mainly by a diversified management. It is the formation of clearcuts due to which synanthropic, clearcut and invasive species occupy the free space. The given species are mainly thermophilic, photophilous representatives and representatives of nitrogen-rich soils and they have a significant influence on the change in the percentual ratios of the econumbers of the six observed ecofactors.