Long-term hydrochemical changes in a lake after the application of several protection measures in the catchment

• Autorzy: Grochowska J. , Tandyrak R. , Wisniewski G.

Warianty tytułu

PL

Długoterminowe zmiany hydrochemiczne w jeziorze po zastosowaniu zabiegów ochronnych zlewni

• Języki publikacji: EN

Abstrakty

EN

A study was conducted on Wulpińskie Lake (706.7 ha, 54.6 m), located in north-eastern Poland. In the middle of the twentieth century, the lake began to be subjected to accelerated eutrophication due to excessive pressure from recreation and an inflow of sewage and pollution from leaky septic tanks and putrefactive reservoirs. The protective actions begun in the basin in 1996 resulted in a 77% reduction in phosphorus load and 28% reduction in nitrogen load. In 2008, mineral phosphorus and TP concentrations averaged 0.1 mg L⁻¹ and 0.16 mg L⁻¹, respectively, and the TN concentration was 0.84 mg L⁻¹. In addition, chloride and calcium concentrations declined and electrical conductivity subsequently decreased.

PL

Badania przeprowadzono na Jeziorze Wulpińskim (706,7 ha, 54,6 m), zlokalizowanym w północno-wschodniej Polsce. Jezioro to od lat 50. XX w. zaczęło podlegać przyspieszonej eutrofizacji z powodu nadmiernej presji turystycznej i rekreacyjnej oraz dopływu ścieków i zanieczyszczeń z nieszczelnych szamb i zbiorników gnilnych. W 1996 r. rozpoczęto działania ochronne w zlewni. Ładunek fosforu wprowadzany do jeziora zredukowano o 77%, a ładunek azotu o 28%. Spowodowało to bardzo wyraźną i trwałą poprawę jakości wody. W 2008 r. średnia koncentracja fosforu mineralnego wynosiła: 0,1 mg P · L⁻¹, a fosforu ogólnego 0,16 mg P · L⁻¹, natomiast azotu ogólnego oscylowała wokół 0,84 mg N · L⁻¹. Zmniejszało się ponadto stężenie chlorków i wapnia oraz wartości przewodności elektrolitycznej.

• Wydawca: -
• Czasopismo: Polish Journal of Natural Sciences
• Rocznik: 2014
• Tom: 29
• Numer: 3
• Opis fizyczny: p.251-263,fig.,ref.

Twórcy

autor

Grochowska J.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Prawochenskiego 1, 10-750 Olsztyn, Poland

autor

Tandyrak R.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland

autor

Wisniewski G.

• Department of Water Protection Engineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland

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