Switzerland

A study comparing lakes in the United States and Switzerland shows that the invasive quagga mussel is spreading widely in both countries, following a similar trend.

The invasive quagga mussel, which is already present in numerous bodies of water in Switzerland, is expected to spread massively in Swiss lakes. The biomass per square metre in Lake Constance, Lake Geneva and Lake Biel is likely to increase by a factor of nine to 20 over the next 22 years, and the quagga mussel is likely to shift into the deeper parts of the lakes, the Swiss Federal Institute of Aquatic Science and Technology (Eawag) announced on Thursday. ...