Vpliv spremembe gospodarjenja na cenološko sestavo severno jadranske pašniške krajine (Ćićarija, Hrvaška)

The research aim was to assess the dynamics of the North Adriatic pastoral landscape (Ćićarija, Croatia) with regard to the coenological composition of grassland communities, and, more specifically, to: i) assess the current grassland mosaic from a coenological viewpoint; ii) assess the effects of management abandonment on grassland species composition, also taking into account, as a basis for comparison, data on pastoral communities collected in the past decades. To achieve the research aims, 73 phytosociological relevés were carried out; for each of them field data (altitude, aspect, slope, landform) and information on grassland management were collected. Multivariate analysis of phytosociological relevés led to the identification of four vegetation types (Danthonio-Scorzoneretum villosae, Carici humilis-Centaureetum rupestris, Brachypodium rupestre-dominated stands, and Anthoxantho-Brometum erecti), which were linked to landform and to grassland management. Comparison in terms of social behaviour type composition of the grassland communities surveyed in the present study with the ones surveyed in the past decades, highlighted that the current management (grassland abandonment, as well as low intensity grazing and not periodic mowing) is leading to a percentage loss of pasture and meadow characteristic species, in favour of successional and ruderal ones.Namen raziskave je bil ovrednotiti dinamiko severnojadranske pašniške krajine (Čićarija, Hrvaška) predvsem cenološke sestavo travniških združb. Posebej smo želeli ugotoviti: i) trenuten travniški mozaik s cenološkega vidika, ii) spremembe opuščanja gospodarjenja na vrstno sestavo travnikov s primerjavo podatkov o pašnikih, pridobljenih v preteklih desetletjih. Naredili smo 73 fitocenoloških popisov in za vsakega od njih smo pridobili podatke o višini, legi, nagibu, krajinski obliki in informacijo o gospodarjenju. Z multivariatnimi analizami smo ugotovili štiri vegetacijske tipe (Danthonio-Scorzoneretum villosae, Carici humilis-Centaureetum rupestris, združbo z dominantno vrsto Brachypodium rupestre in Anthoxantho-Brometum erecti), ki smo jih povezali s krajinsko obliko in načinom gospodarjenja. Primerjava sestave zgradbe travniških združb glede na sinsociološko pripadnost vrst med današnjimi in starejšimi popisi je pokazala, da trenuten način gospodarjenja (opuščanje gospodarjenja, nizka intenziteta paše in le občasna košnja) vodi v izgubo značilnih vrst pašnikov in travnikov na račun vrst razvitejših sukcesijskih stadijev in vrst ruderalnih rastišč