The Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) invites applications for a PhD position on “Ecohydrological sources of urban moisture re-cycling and atmospheric cooling”. There is still a lack of knowledge of spatial variability in evaporation and transpiration from urban areas and crucially, where this water is sourced from, particularly in urban green space. This doctoral thesis will use isotope-based approaches to enhance our understanding of ecohydrological fluxes at multiple spatial scales. By monitoring temporal changes in the isotopic composition in urban rainfall, atmospheric vapour, subsurface water and plant xylem, a quantification of urban water partitioning can be achieved. The doctoral researcher will utilise field-deployable analysers for direct in-situ monitoring of the isotope composition of soil water, plant xylem and evaporated moisture. This will help understand what types of land cover best enhance moisture fluxes back to the atmosphere, and the density and type of vegetation cover needed to have a significant cooling effect, whilst not compromising groundwater recharge. Funding has been secured for 3 years. We seek dynamic, motivated applicants. There will be a close collaboration with project with project W6 and the University of Aberdeen. The position is part of a graduate school funded by the German Research Foundation (DFG) as part of the Research Training Group “Urban Water Interfaces” (UWI).