Pollution, droughts and floods, ground-surface water connection are significant elements of the aquatic environment in catchments.
One aim of the session is to explore the use of isotope tracing technique to determine the sources, dynamics, and chemistry of water sustaining catchments with the goal of managing the quantity and quality of water in a catchment context. The second aim is to look at the sensitivity of hydrology and biogeochemical processes through isotope tracing, to specific external influences, especially those related to impact of human activities like agriculture (soil organic matter, erosion, water and nutrient use efficiency) and global change in catchments, including wetlands. We strongly encourage studies bringing classical isotope tools (O, H) or more recent developed ones into play.