1. Bio‐Protection Research Centre Lincoln University Lincoln 7647 New Zealand
2. Institute for Applied Ecology University of Canberra Canberra ACT 2601 Australia
3. Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO‐KNAW) Wageningen 6708 PB The Netherlands
4. Laboratory of Nematology Wageningen University Wageningen 6700 ES The Netherlands