1. Department of Spatial Management, Faculty of Oceanography and Geography, University of Gdańsk, Gdansk, Poland;
2. Institute of Geography and Spatial Management, Jagiellonian University, Kraków, Poland;
3. Science and Education Centre, Bieszczady National Park, Ustrzyki Górne, Poland;
4. Faculty of Civil Engineering, Architecture and Environmental Engineering, Lodz University of Technology, Lodz, Poland