Affiliation: | aDivision of Forest, Nature and Landscape Research, Katholieke Universiteit Leuven, Celestijnenlaan 200E, 3001 Leuven, Belgium;bLaboratory of Forestry, Ghent University, Geraardsbergse Steenweg 267, 9090 Gontrode, Belgium;cInstitute for Nature and Forest Research, Gaverstraat 4, 9500 Geraardsbergen, Belgium;dKroendaalplein 4, 3090 Overijse, Belgium |