The paper presents the results of vegetation research carried out in the Base Station of Integrated Monitoring of Natural Environment area in Szymbark. In order to assess the dynamic trends of the distinguished plant communities phytosociological data from 1995 and 2011 were compared. The DCA analysis and the multivariate PERMANOVA analysis of variance showed no statistically significant differences in the species composition of the compared phytocoenoses in the period 1995–2011. Using the Wilcoxon signed-rank test, statistically significant differences were noted in the mean values of species richness and the Pielou species homogeneity index. The greatest transformations in the structure were found in the Arrenatheretum elatioris association, which results from the high sensitivity of this phytocoenosis to changes in environmental parameters and the way of use.