For the European flat oyster to give it a Comeback in the North sea. For it breeding on the island of Helgoland since 2017 oysters. In the coming years, the first animals in Offshore wind parks in the German North sea are to be located, said shell expert Rainer borcher thing.
“There, the oysters are protected from bottom trawling, and hope to make new benches.” Also in the Netherlands the species Ostrea edulis is settled again, with oysters from Norway, white Christof Goetze of the society for conservation of nature protection station in the Wadden sea. “If the work of resettlement, we can maybe meet in ten years’ time, the European flat oyster back in the Wadden sea more than a hundred years after your Disappearance due to Overfishing.”
The oyster banks in the North sea rails, the earlier inexhaustible. In the middle ages, collected shellfish fishing shellfish mass out of the sea, such as in a document of the year 1241 is noted. In the year 1870, there were oysters, the Naturschutzbund (Nabu) reports that around five million. Overfishing led one hundred years ago in the collapse of stocks, such as borcher Ding said.
then, in the icy winters of 1929, the oysters in the Wadden sea froze, it went even further down. The species survived only on the rocky coasts of Western Europe and southern Norway as well as in the Danish Limfjord. And there was worse to come. When you try to make other oyster species, was introduced around 1978, the California oyster disease Bonamia to Europe. “And for the remaining stocks of the native oyster to the collapse by 90 percent,” says borcher thing.
An oyster may be several decades old. Large specimens can produce a Million larvae. These settle on the shells of other oysters.