1. Department of Terrestrial Ecology; Netherlands Institute of Ecology, NIOO KNAW; Wageningen The Netherlands
2. Department of Soil Quality; Wageningen University; Wageningen The Netherlands
3. Department of Microbial Ecology; Netherlands Institute of Ecology, NIOO KNAW; Wageningen The Netherlands
4. Department of Biology; Utrecht University; Utrecht The Netherlands
5. Laboratory of Nematology; Wageningen University; Wageningen The Netherlands