1. Quantitative Landscape Ecology,
Institute for Environmental Science, University of Koblenz-Landau, Fortstraße 7, D-76829 Landau, Germany
2. Aarhus University, Department of Bioscience, Vejlsøvej 25, 8600 Silkeborg, Denmark
3. University of Copenhagen, Department of Basic Sciences and Environment, Thorvaldsensvej 40,
1871 Frederiksberg C, Denmark
4. National Institute for Public Health and the Environment, Centre for Sustainability,
Environment and Health, Antonie van Leeuwenhoeklaan 9, 3721MA Bilthoven,
The Netherlands