The constitution of mountain meadows vegetation is stricken by numerous factors, among them an important part played by the applied management. The A. montana meadows are the result of the application for a long time of an extensive traditional management. The absence of the maintenance works (especially the fertilization) and the exploitation only by grazing determine the powerful setting in of some species like: Vaccinium myrtillus, Vaccinium vitis-ideae, Luzula luzuloides, Deschampsia flexuoza etc. The application of the maintenance works and the exploitation by mowing or by a mixed system favours the extend of some species, like: : Agrostis capillaris, Festuca rubra, Trisetum flavescens, Trifolium pratense, Trifolium repens etc., and also of some species from other botanical families, like:  Centaurea pseudophrygia, Euphrasia officinalis, Hieracium aurantiacum etc. The floristic biodiversity is being reduced in the case of the first system and it increases evidently in the case of the system with maintenance works and with a usage by mowing or mixed

mountain meadows; management; biodiversity

Presentation: oral