1. Plant Evolutionary Ecology Institute of Evolution and Ecology University of Tübingen Tübingen Germany
2. Plant Evolutionary Ecology Institute of Ecology, Evolution and Diversity Goethe University Frankfurt Frankfurt Germany
3. Silviculture and Forest Ecology of the Temperate Zones University of Göttingen Göttingen Germany
4. Biodiversity and Ecosystem Research Group Institute of Landscape Ecology University of Münster Münster Germany