Abstract
In the submitted paper, we have summarised the results of a research that was realised in the locality of the Báb forest (village Veľky Báb, Nitra loess upland). In the area of Báb forest, we were able to document 134 higher plants on 32 permanent research plots (PRP) during 2013. One hundred and twenty-three taxa were documented in the PRP areas situated on clearcuts, whil only 75 were found in the PRP areas located in forest covers. On PRP of clearcuts, there was the highest cover of herb layer; on the other hand, in the forest cover, there was a higher cover of shrub and tree layer. The highest differences in life-forms between two groups of PRP (clearcuts/forest) were detected by hemicryptophytes and terophytes. On all the 32 areas, the biggest number of species belonged to the indigenous species and apophytes. The biggest differences between forests and clearcuts are shown in a representation of C- strategies. The species composition of the Báb forest has changed mainly due to creation of clearcut areas in November 2006. The logging created suitable conditions for the penetration of heliophilious non-indigenous species from the surrounding (mainly anthropogenic) habitats. That is why there are largely synanthropic and non-indigenous taxa represented on permanent clearcut areas, which are spreading further to the forest cover as well as distant areas of the Báb forest.
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