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The invasive quagga mussel has already gained a foothold in numerous bodies of water in Switzerland. For three affected Swiss lakes, a prediction of the extent to which the quagga mussel will continue to spread has now been made for the first time as part of the SeeWandel project, as a collaboration between researchers from the aquatic research institute Eawag, the universities of Geneva and Constance and others.

Changes threaten biodiversity and drinking water quality Lake Stechlin is an example of how oxygen is increasingly depleting in lakes. | Photo: Solvin Zankl Oxygen levels in freshwater lakes are declining rapidly – faster than in the oceans. Over the past forty years, for example, oxygen levels in the deep waters of temperate lakes have dropped by nearly 19 percent. This is shown by a study with IGB published today in the journal Nature. This trend is mainly due to climate change and threatens freshwater biodiversity and drinking water quality. The international research team, led by the U....