Dawid Szatten, Michał Habel, Zygmunt Babiński, Influence of Hydrologic Alteration on Sediment, Dissolved Load and Nutrient Downstream Transfer Continuity in a River: Example Lower Brda River Cascade Dams (Poland), Resources - 2021, Vol. 10, iss. 7, art. no 70, Punktacja całkowita MEiN: 100.000

Artykuł prezentuje badania dotyczące wpływu zmian reżimu hydrologicznego, wskutek działalności systemu zbiorników retencyjnych kaskady dolnej Brdy, na ciągłość transportu rumowiska rzecznego i biogenów. Wykorzystano w tym celu powszechnie stosowaną metodę IHA, zestawiając tło hydrologiczne z długoletnimi obserwacjami wybranych wskaźników jakości wód. Wyniki umożliwiły określenie wpływu trybu operacyjnego stopni wodnych na zrównoważone zarządzanie rumowiskiem i biogenami, w świetle zachowania dobrego statusu ekologicznego wód.

Abstrakt:

Hydrologic alternation of river systems is an essential factor of human activity. Cascade-dammed waters are characterized by the disturbed outflow of material from the catchment. Changes in sediment, dissolved load and nutrient balance are among the base indicators of water resource monitoring. This research was based on the use of hydrological and water quality data (1984–2017) and the Indicators of Hydrologic Alteration (IHA) method to determine the influence of river regime changes on downstream transfer continuity of sediments and nutrients in the example of the Lower Brda river cascade dams (Poland). Two types of regimes were used: hydropeaking (1984–2000) and run–of–river (2001–2017). Using the IHA method and water quality data, a qualitative and quantitative relationship were demonstrated between changes of regime operation and sediment and nutrient balance. The use of sites above and below the cascade made it possible to determine sediment, dissolved load, and nutrient trapping and removing processes. Studies have shown that changes in operation regime influenced the supply chain and continuity of sediment and nutrient transport in cascade-dammed rivers. The conducted research showed that sustainable management of sediment and nutrient in the alternated catchment helps achieve good ecological status of the water.

Link: https://doi.org/10.3390/resources10070070