Recent counts and research show that the number of amphibians in the fourth pond, a vital reproduction area for toads, rare newts, and frogs, has declined a lot. At the same time, the number of invasive exotic species such as the Chinese mitten crab and the stone moroko is vastly increasing.
Fourth pond temporarily drained
Because of this, we will be draining the fourth abbey pond temporarily this spring. The fourth pond is the least deep one of the four ponds and, therefore, the most suitable pond for amphibians and aquatic insects.
By taking out the water from the pond for several months, the fish will disappear, and we will be able to stop the rise of invasive exotic species. In return, amphibians will have more chances to survive again in time. This measure will also ensure a more stable pond soil, and the layer of silt will decrease due to exposure to oxygen.
Accurate monitoring
The pond will be partially drained by a new drain under the footpath. The draining process of the pond will be closely monitored by the city of Leuven's green management department. Any large fish will be transferred to the other ponds. The invasive species will, of course, not be transferred, as they will be eaten by waterbirds when the pond dries up. Draining this pond will not affect the beaver population at the abbey site.
