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Jana Špulerová
Institute of Landscape Ecology of the Slovak Academy of Sciences, P.O.Box 254, Štefánikova 3, 814 99 Bratislava, Slovak Republic
Monika Drábová
Constantine the Philosopher University in Nitra, Faculty of Natural Sciences, Department of Ecology and Environment, Trieda A. Hlinku 1, 949 74, Nitra, Slovak Republic
Juraj Lieskovský
Institute of Landscape Ecology of the Slovak Academy of Sciences, branch Nitra, Akademická 2, 949 01 Nitra, Slovak