1. J.F. Blumenbach Institute of Zoology and Anthropology University of Göttingen Untere Karspüle 2 37073 Göttingen Germany
2. Max Planck Institute for the Science of Human History Kahlaische Straße 07745 Jena Germany
3. A.N. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences Leninsky Prospect 33 119071 Moscow Russia
4. Ecological Networks Technische Universität Darmstadt Schnittspahnstraße 3 64287 Darmstadt Germany
5. Centre for Stable Isotope Research and Analysis Büsgen‐Institute University of Göttingen Büsgenweg 2 37077 Göttingen Germany
6. Centre of Biodiversity and Sustainable Land Use University of Göttingen Von‐Siebold‐Straße 8 37075 Göttingen Germany