1. Ludwig-Maximilian University Munich,Faculty of Geosciences,Department of Geography,Munich,Germany,80333
2. Institute of Landscape Ecology,Slovak Academy of Scienes,Department of Biodiversity of Ecosystems and Landscape,Bratislava,Slovakia,814 99
3. Constantine the Philosopher University in Nitra,Faculty of Natural Sciences,Department of Ecology and Environmental Science,Nitra-Chrenová,Slovakia,949 74