Effetti della colonizzazione di Brachypodium rupestre (Host) Roemer et Scultes sulla diversità di alcune fitocenosi erbacee dell'Appennino centrale

Effects of Brachypodium rupestre (Host) Roemer et Schultes colonization on plant communities biodiversity in central Apennine. The impact of Brachypodium rupestre colonization on grassland communities in different sites of the central Apennines was analyzed by phytosociological and ecophysiological methods. Study areas were localized at the supratemperate and mesotemperate bioclimatic belts, on limestone, marly-limestone and marly-sandy substrata. The authors observed a significant spatio-temporal reduction of number of species in Bromus erectus grasslands and Agropyron repens old-fields due to the Brachypodium rupestre colonization process. Its propagation patterns and the impacts on plant communities biodiversity are similar in the investigated areas, indipendently from the substrata type and the bioclimatic belt