Stefan Geisen started at the end of 2019 at the Laboratory of Nematology at Wageningen University after finishing a 5 year postdoc and junior group leading position at the Netherlands Institute of Ecology (NIOO-KNAW). Stefan works on soil microbial ecology with a particular focus on protists and nematodes, but also other soil biodiversity. Furthermore, he studies the distribution and function of soil organisms and their effects on plant performance in experimental studies. Among his other interests are method improvements for more user-friendly soil biodiversity efforts.