
Reintroduction of Crayfish in the Sihlwald Forest Reserve
Crayfish used to be widespread in Switzerland. However, the four native species are now under severe pressure threatened by habitat loss and invasive species, including crayfish plague. Crayfish play an important role in the aquatic ecosystem. As omnivores, they break down dead plants or the remains of dead fish, for example. They also serve as food for numerous animals, including larger fish such as pike, as well as foxes, otters, martens and herons.
The aquatic habitat also plays an important role in the Sihlwald forest reserve. The Wildnispark Zurich Foundation is committed to species conservation and supports the promotion of native wild animal species and local populations.
The goal of this project is to restore a viable population of stone crayfish (Austropotamobius torrentium) in the Sihlwald and to sensitize the local population and parks visitors to the topic of the aquatic biocenosis.