1. Inst. of Ecology, Univ. of Jena; Jena Germany
2. Max Planck Inst. for Biogeochemistry; Jena Germany
3. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Leipzig Germany
4. Inst. of Biology, Leipzig Univ.; Leipzig Germany
5. Dept of Ecology and Ecosystem Management; School of Life Sciences Weihenstephan, Technical Univ. of Munich; Freising Germany
6. Dept of Biology; Ghent Univ.; Ghent Belgium