Clam conquered Constance: up to half a billion damage

The Quagga mussel spreads for around three years of mass imprisonment in the lake of Constance and is part of significant harm. Up to 40 mm wide Tier sets, for example, in the technical equipment of the zweckverband Bodensee-wasserversorgung.

in Order to clean it even more intense, had been recruited four staff members in addition explained a spokeswoman. In addition, the Association intends to adapt its processing plants and soul events, which can also be cleaned.

the aim was also to prevent the spread of the mussel into the drinking water network. This is done with the help of ozone, which kills the larvae of the Quagga mussel. Sand filters away, then out of the water. "We go to the present, still in a very early state of the planning of investment amounts to a mid three-digit million amount," said the spokesperson.

Spread from the Black sea

The Quagga mussel is originally from the catchment area of the Black sea. In 2016, the first animals in lake Constance were found. How you got there, can, according to the experts is no longer exactly reconstruct.

is Relatively likely pathways by boat or water sports equipment, said Thorsten racing Barth of the German Institute for lake research in Langenargen. Conceivable is also that the animals were introduced via water, birds from the river Rhine, in.

What is the impact you will have on the Ecosystem in lake Constance, which is also still unclear. To do this, investigations were still under way. "It is foreseeable, however, that the shells in the masses, in which they colonize the bottom of the lake, are of food competition in the lake." (sda)

Created: 02.12.2019, 11:43 PM