On May 8, the Environmental Protection Department under the Department of Natural Resources and Environment of Binh Dinh province said it had concluded the cause of the mass fish deaths at Bau Sen Lake, Quy Nhon city.
According to the results of water sampling at Bau Sen Lake at the time the fish died, the lake water has a dissolved oxygen concentration that is too low compared to allowed standards, affecting the environment and living conditions of the aquatic ecosystem. born in the lake, leading to fish death.
Mr. Nguyen Viet Cuong, Director of the Environmental Protection Department of Binh Dinh province, said that according to initial assessments, the phenomenon of many fish deaths in Bau Sen lake may be due to changes in weather.
Fish died en masse at Bau Sen lake in Quy Nhon city, Binh Dinh province on May 4 (Photo: Binh Dinh).
According to Mr. Cuong’s analysis, often at times of transition from prolonged heat to rain, there will be disturbance of the bottom mud layer in stagnant ponds and lakes. This will release an amount of gas accumulated in the bottom mud layer, causing water pollution, reducing dissolved oxygen content in the water, causing fish to lack oxygen, die en masse, or fish float to the water surface to easily escape. Respiratory.
Previously on May 4, many people near Bau Sen Lake reported mass fish deaths and a foul smell. The amount of dead fish reached up to a ton, mainly tilapia and carp.
After receiving information, the Department of Natural Resources and Environment of Binh Dinh province sent functional forces to inspect and clean up dead fish carcasses at Bau Sen lake.
At the same time, we request the People’s Committee of Quy Nhon City to direct relevant units to review and inspect water sources draining into Bau Sen ecological lake, ensuring the correct function of the ecological lake is to dissipate energy and drain rainwater. .