Christian Griebler works at the University of Vienna, Austria. Dr Christian Griebler is a functional ecologist with a broad research interest stretching from the roles of microorganisms to metazoans in groundwater ecosystems. Rooted in aquatic microbial ecology and biogeochemistry, his research group tackles groundwater biodiversity, cycling of carbon and nutrients, effects of climate and global change, as well as the assessment of groundwater systems in terms of ecological status.