Joerg teaches on undergraduate and postgraduate modules on the environmental science and geography degree programmes. His main teaching interests lie in hydrology, aquatic topics of chemistry and biology, water treatment and water management. In particular, he enjoys teaching laboratory classes and field schools.

Research interests are issues of water quality and aquatic ecology. Currently active research and conservation projects investigate antibiotics and antimicrobial resistance, interactions between bacteria, algae and aquatic invertebrates, filter feeders, monitoring and ecological consequences of siltation, nutrient management and crayfish conservation. Other recurring topics are water quality of natural bathing waters, ecological impact of channelisation and ecology of subterranean and hyporheic environments.

Current research project with external funding: Collaborative Action for the Natura Network (CANN, funded by EU INTERREG VA administered by SEUPB).