1. Department of Terrestrial Ecology; Netherlands Institute of Ecology (NIOO-KNAW); P.O. Box 50 6700 AB Wageningen The Netherlands
2. AG Planktologie; Institut für Chemie und Biologie des Meeres; Carl von Ossietzky Universität Oldenburg; Schleusenstraße 1 26382 Wilhelmshaven Germany
3. JFB Institute of Zoology and Anthropology; University of Göttingen; Berliner Straße 28 Göttingen Germany
4. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5e 04103 Leipzig Germany
5. Institute of Biology; Leipzig University; Johannisallee 21 04103 Leipzig Germany
6. Max Planck Institute for Biogeochemistry; Jena Germany
7. Department of Soil Quality; Wageningen University; 6700 AA Wageningen The Netherlands
8. Laboratory of Nematology; Wageningen University; 6700 ES Wageningen The Netherlands