Phosphorus balance at various water flows in a lake restored by hypolimnetic withdrawal

• Autorzy: Mientki C. , Dunalska J.
• Języki publikacji: EN

Abstrakty

EN

Lake Kortowskie is restored by the hypolimnetic withdrawal method: rich in nutrients near-bottom waters are removed by a pipeline directly to the outflow instead of the natural outflow of surface waters. It has been found out that the amount of water discharged through the pipeline and therefore the amount of removed phosphorus depends on the surface inflow. The water balance of the lake in summer is unfavourable whereas the phosphorus balance very favourable. The latter is determined by the diminishing phosphorus loads entering the lake, and by the increasing amounts of phosphorus released from the bottom sediments. Any disturbance at the interface bottom sediments-overlying water results in continuous release of „new” phosphorus amounts to the water. In the same time near-bottom water withdrawal to the outflow cause deficiency with this element in the lake ecosystem. For optimising the estoration process such rate of pipeline outflow should be established, to reach maximal phosphorus removal at an existing hydrological balance.

Słowa kluczowe

EN

lake; Lake Kortowskie; water reservoir; hydrology; phosphorus balance; water flow; eutrophication; water balance

• Wydawca: -
• Czasopismo: International Journal of Ecohydrology and Hydrobiology
• Rocznik: 2001
• Tom: 01
• Numer: 4
• Opis fizyczny: p.417-422,fig.,ref.

Twórcy

autor

Mientki C.

• University of Warmia and Mazury in Olsztyn, Prawochenskiego 1, 10-957 Olsztyn, Poland

autor

Dunalska J.