PhD degree in soil -, microbial - or plant ecology with: good ability to think conceptually and quantitatively good knowledge of plant-soil (biotic) interactions experience with working with soil micro-organisms affinity with state-of-the art soil molecular biological techniques excellent ability to communicate in English, both orally and in writing experience with writing of a scientific paper is highly appreciated good organisational skills and ability to work independently ability to work in multidisciplinary and international research teams