Mediterranean sea on the brink of ecological disaster
No one doubts that the Mediterranean sea is one of the most beautiful seas of our planet! Anyone who has ever been lucky enough to see the fabulous beauty of…

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Herring
Typical representatives of the nekton is the herring. It is well known that this fish has great commercial value. Until comparatively recently, it was promyshlyali in such large quantities that…

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Catfish Golden – undemanding aquarium fish
Golden catfish (bronze tetras hiding) is a benthic fish of the family of armored. Its name they received because of the unusual coloration that varies from light silver to copper…

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The inspection found the cause of mass death of fish in the Nikolaev reservoirs

From 11 to 19 June this year, the State ecological inspection in the Nikolaev area repeatedly documented fish kills in the rivers the southern bug, Ingul and the Bugsky estuary. In this regard, we selected 22 samples of water and held control for the major pollutants.

As reported in a press-state ecoinspection service in the Nikolaev area, in the surface layer recorded water dissolved oxygen for the entire period from 0.9 to 10.5 mg/DM 3. The ratio — during the summer, the oxygen content in all water bodies should be not less than 6,0 mg/dm3 .

The oxygen is released into the water column as a result of processes of photosynthesis, which better takes place in the daytime. At night there is a reverse process. Therefore, the minimum content of oxygen is observed at dawn, which was recorded on June 19, in 6 hours (the water temperature was 25 0 C). The concentration of dissolved oxygen ranged from 4.0 mg/DM 3 the water surface to 0.2 mg/dm3 in the bottom horizon. This fact is due to the hydrometeorological conditions prevailing in the present time, what is the likely cause of the phenomena zamorny.

The concentrations of major pollutants are within the limits of observation, which are characteristic for the summer period in the conditions of intensivnostei water, namely ammonium salt 0,22-1,00 mg/dm3 (the maximum excess of maximum permissible concentration for water bodies of fishery (hereinafter MPC) in 2 times), nitrates 0,5-3,5 mg/dm3 (no exceedance), nitrite 0,030-0,081 mg/DM 3 (no exceedance), phosphates 0,137 – 0,497 mg/dm3 (the maximum excess of MPC by 3 times), the total iron 0,22-0,43 mg/dm3 (the maximum excess of MPC in 4.3 times), no hydrogen sulphide (no exceedance). The exceedance is recorded continuously on the ammonium salt, phosphate, total iron and indicate water pollution due to discharges of insufficiently treated domestic sewage and a gradual decrease in the ability of water bodies to cleanse itself. In recent years, such maximum permissible concentration recorded constantly, and especially in the summer.

IDE is the most beautiful fish
IDE – fish of large, medium length up to half a metre, but specimens up to 70 cm in length. The weight of the IDE is 2-3 kg, individual fish…

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Types of jellyfish
Floating jellyfish in the sea often struck by its beauty. Such a wealth of shapes, colors, as among the jellyfish, not to meet many animals! Jellyfish inhabit all seas, and…

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