As explained in an interview with the Polish state news agency PAP by Radosław Rzepecki, Deputy Inspector of the Pomeranian Provincial Environmental Protection Inspectorate (WIOŚ), the fish removed from the water included tench, pike, bream, and roach.
Inspectors have taken samples for further analysis. According to the information provided to him, the fish die-off in this area likely occurred as early as August 19.
In the expert’s opinion, the water's pH level was within the normal range, but low oxygen levels were observed, which could initially indicate a phenomenon known as 'suffocation.'
So far, specialists have not detected any sewage inflows or visible water contamination. Further analyses will examine the potential impact of other factors, and the lake remains under continuous observation.
Dead fish discovered in northern Poland, following similar incidents in the south
Earlier, over 115 tons of dead fish were removed from the Gliwice Canal and Lake Dzierżno Duże in southern Poland due to the bloom of the so-called golden algae.
To mitigate this problem, barriers were installed, and experiments with hydrogen peroxide were conducted under the supervision of the Ministry of Climate and Environment. The Ministry of Infrastructure tested a silicon-based agent, as reported by polsatnews.pl.
Rzeczyce, August 20, 2024. The removal of dead fish from Lake Dzierżno Duże in southern Poland. The mass fish die-off is caused by the golden alga. Since the beginning of August, over 115 tons of dead fish have been removed from Lake Dzierżno Duże and the Gliwice Canal in southern Poland. (PAP/J.Praszkiewic)
Source: PAP/Polsat News/MKiŚ
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