A single toxic algae can kill 100 tons of fish

Berlin and Warsaw are trying to establish the cause of this massive pollution of the Oder, the extent of which was revealed in mid-August. German and Polish authorities suspect toxic algae to be responsible for the death of more than 100 tonnes of fish in a river crossing the two countries on Monday, August 22.

“Experiments conducted so far have confirmed the presence of algae.” is toxic “Little Prymenesium”Polish Deputy Environment Minister Jacek Ostopa explained Twitter.

read more: The article is reserved for our subscribers Almost 100 tons of fish died in the Oder River in Poland, an ecological disaster without explanation

On the German side, the latest results “The Leibniz Institute and the University of Vienna confirm suspicions that mass growths of toxic algae may be responsible for fish deaths”, Andreas Kübler, spokesman for the German Environment Ministry, said at a regular press conference in Berlin. However, the speaker pointed out that fish and shellfish were the reasons for such massive die-offs. « Multiples ».

Unusual salinity of the river

Also known as offensive microalgae “Golden Sponge”, which is common in estuaries and usually forms in brackish waters with low salt content in the ocean. The spokesperson pointed out that the industry may have reasons. High salinity levels may be favored by low water levels and high temperatures, experts said.

On the German and Polish side, chemicals were initially suspected to have played a role. However, Polish Environment Minister Anna Moskwa later clarified“No samples tested yet” No “Demonstrated Toxic Substances”.

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The disaster caused a slight strain in the relationship between the two countries. As a result, Germany accused Poland of delay in reporting the level of pollution. On Saturday, Anna warned about Moskva Twittervs “A new “fake news” broadcast in Germany”.After Brandenburg’s environment minister speculated about pesticide in the water.

The Polish minister said traces of mercury were found in the water, which was unconfirmed, in line with earlier reports by the land’s authorities.

In Poland, the government has come under heavy criticism for not taking immediate action. The first reports of mass fish kills in the Oder came from Polish locals and fishermen as early as July 28. In recent years, the Oder has become known as a relatively clean river, with about forty species of fish living there.

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The world with AFP

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