In the introduction an overview is given of the different types of rivers and wetlands ecosystems, their characteristics, distribution and major threats. The main body of the course consists of three parts. The first part describes the basics of river hydrodynamics (discharge, flow characteristics, sediment transport and the basics of hydrodynamic models) and wetland hydrology (ground water flow, precipitation, groundwater models). The second part zooms in on the chemical characteristics and biogeochemical processes in the pelagic and benthic compartments and on how these compartments interact (sediment-to-water fluxes, water-to-atmosphere fluxes). The third part considers how particular functional traits allow plants to survive the specific conditions of rivers and wetlands. Finally, this in depth understanding of the ecohydrological functioning will be used to get insight in the consequences of global change on these habitats.