A spooky spectacle: After the Opening of the Krüner Weir, the river Isar disappears in some areas in the gravel. The death sentence for countless aquatic organisms.

the river Isar has been a mass extinction . After the Opening of the Krüner Weir, the river Isar has sunk at many Places in the gravel. Thousands of fish have paid with their lives. All the News and info in and around Wallgau and the district of Garmisch-Partenkirchen you will find always up to date, and only with us.

Oberes Isartal – Open the locks on the Krüner military , is it for the fish downstream is critical. An eye-witness Sebastian experienced Frölich from Mittenwald close the water creatures in the dried Isar mass die . "Anyone who has experienced this, is actually shocked," said the nature photographer.

mass die Isar: thousands of fish die

brook trout, bullheads, Mullet, minnows and other aquatic animals – all dead, painfully choked . "Unfortunately perish in order for the 41. Time since 1995 to a variety of fish,“ regrets Hans Schanderl. And the man from the district of fishing club Garmisch-Partenkirchen know exactly what he is talking about. Meticulously the Kocheler leads book. This Thursday, the approximately 20 volunteers with dip nets, waders, and electrical appliances of around 500 metres below the Wallgauer Isarstegs do your Best, try to sacrifice to save what has not yet been smothered, or of crows, and gulls, dead picked. "In in between the pouring rain is not an easy task," says Schanderl this Sisyphus work.

+ Dry: the Isar at Wallgau.©Sebastian Frölich

thousands of fish die in Isar: fish wriggling in the gravel

Partially be accumulated in the Dry fidgety fish under irrigations, roots, and bushes up. "For many, the help of came late ." Schanderl speaks of "a few thousand" water creatures that have no Chance, the small specimens with included. A mass extinction .

The Bad in mind: This gruesome spectacle is repeated in the beautiful regularity . Animal friend Frölich referred to as the " disaster " – for the full diversity of species.

mass extinction on the Isar river: the Weir as a cause for mass die

The cause is situated a few River miles up – on receipt of the aforementioned Weir near Krün . Above the plant, the river bed and the storage space had to be filled continuously with gravel. He sloshed already in the transfer channel, the direction of things - and Walchensee. Greater operational disturbances were to be expected. The power plant operator Uniper no other choice remained. The company has proceeded according to Schanderl "in the relatively small water of approximately 25 cubic meters per second", to open the Weir and the gravel flush. "It was absolutely necessary," justifies Uniper-speaker Theodorus Reumschüssel this action. He reiterated that this process should go to him, according to two to four times per year is done, everything is done other than like. "Because in order for a loss in Production goes hand in hand." With other words: In this Phase, no current can be produced. "Therefore, the Whole is not a cheap affair ."

fish perish in Isar: power plant-action death sentence

For many organisms, it is a fatal . Because when the Weir is closed again and the agreed residual amount of water of 4800 litres per second is flowing again, the Isar on a kilometre length – a well-known phenomenon, since the person in the allegedly last wild river in Germany technically has intervened. In the gravel-filled river bed, the water disappears from range, and flows in the sequence of the Rocks. the The death sentence for a lot of fish , the fidget, suddenly, in the Dry or at best in small pools trapped. Water on the mills of Hans Schanderl, the calls for years, not to say decades, a gravel catch above the Krüner Weir. As a result, the amount of Rock could be designed to "isarverträglich," believes Schanderl. "The Weir would be opened only in the case of really big floods ."

To the Horror-scenario, on the Isar river: Hope for conservation

The energy giant Uniper conversation is quite ready. "The idea, we are generally positive compared to ," says Reumschüssel. "A technically superior Option." In the same breath, the company spokesman, clarifies: "The financing and management can be our theme ." A view knows the gravel catch-Initiator Schanderl enough. He knows that without the support of the state nature protection of the fish trap Isar remains. In this context, he has already received a shock from the district office. On his request he was informed in a Letter,
"the fact that the receipt of the Aqua communities tables of life for the conservation of nature is, of course, in no way, in principle, is subordinated! However, the aquatic areas of the Upper Isar are currently and in the foreseeable future relatively less threatened, so that the conservation of nature ,and the intra-professional conflict‘, appropriate priorities must be set.“

"Because it's tearing me up," says Schanderl. He hopes, nevertheless, to relent, in the case of the environmental authorities. The most recent mass extinction could give, perhaps, an important impulse.

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*Merkur.de is part of the nationwide Ippen-Digital editors network.

Date Of Update: 23 June 2020, 18:34