Funding Statement
This research was supported by the LIFE Project ”LIFE+10 NAT/AT/016 - Danube Network” and VERBUND Hydro Power GmbH. The funders provided financial and logistical support for the construction and monitoring of the near-natural bypass system at the Ottensheim-Wilhering Hydro Power Plant. The funding bodies had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.