Model-based analysis of macrophytes role in the flow distribution in the anastomosing river system

摘要: The impact of vegetation on the hydrology and geomorphology aquatic ecosystems has been studied intensively in recent years. Numerous hydraulic models developed to date help understand quantitatively assess influence in-stream macrophytes a channel’s conditions. However, special focus is placed single-thread rivers, leaving anastomosing rivers practically uninvestigated. To fill this gap, objective study was investigate flow distribution complex river system situated northeastern Poland. newly designed, one-dimensional, steady-flow model, dedicated for used indicated high water during whole year general, but—as expected—significantly higher summer season. Simulations removal selected channels reflected Manning’s coefficient alterations caused relatively discharge transitions growing This proved significance feedback between process plants growth anabranches. results are unique relevant could be successfully considered protection semi-natural anabranching rivers.