Abstrakt
An analysis of long-term changes in abundance of hibernating bats as revealed from the annual monitoring programme conducted in four mountain regions of theWestern Carpathians (Muranska planinaMts, Revucka vrchovina Mts, Slovensky kras Mts, Štiavnicke vrchy Mts) during the period 1992–2009 is providing in the paper. Data from 52 hibernacula were analysed.
Among 18 bat species recorded, an apparent population increase of three most abundant thermophilous and originally cave dwelling species of bats, Rhinolophus hipposideros, R. ferrumequinum, Myotis myotis, was observed. In other bat species (e.g., R. euryale, M. emarginatus, M. mystacinus, M. dasycneme, Barbastella barbastellus), population trends could not be detected and because of data scarcity, they should be evaluated from more extensive datasets obtained from a wide range of hibernacula or from a completely different type of evidence.