We have actually three open positions for PhDs in the group Biopshere Impact Studies.
The specific PhD subjects are :
Multiple contamination with radionuclides and heavy metals: characterizing plant stress responses using duckweed Lemna sp. (PhD)
Dynamic Modelling of Soil-Vegetation-Atmosphere Transfer (SVAT) in perennial ecosystems (PhD)
Modelling the dispersion of radionuclides in rivers (PhD) -
You can see more on restricted area "vacancies"