**Appendix A**

**Table A1.** Frequency values (in %) of species in the plant communities of *Lolium perenne*, *Alopecurus pratensis*, and *Bromus hordeaceus*. Identified species groups indicating plant communities are marked. *Other species* include common *Arrhenatheretalia* species not differentiating between vegetation types. Note the changed order of the growths of the *Alopecurus pratensis* community for better visualization.

