2018a). In addition, population estimates are based on expert judgement and a regular monitoring is [...] assemblages in the Danube is poorly known and often based on shoreline sampling (Szalóky et al., 2014). Hence [...] its conservation value and the lack of monitoring-based populations estimates, a special focus lies on the
Restoration, at least in its early stages, was mainly based on ecological knowledge. Why then should we consider [...] can mimic past functioning or imagine a new one based on these new conditions. A large numbers of rivers
leverages Citizen Science and an innovative mentor-based approach to involve students, researchers, and the [...] through a standardized tutorial system. This mentor-based Citizen Science approach aims to not only gather