Freshwater rewilding

1.7 Reintroducing wildlife

The reintroduction of keystone species can be an important component of rewilding rivers and wetlands in Europe, helping to restore natural ecosystems and enhance biodiversity. Beavers are known as ecosystem engineers, with their dam-building activity creating wetlands that support a variety of plant and animal life. These wetlands can improve water quality, reduce flood risks, and provide habitats for numerous other wildlife species.

The reintroduction of sturgeon, another keystone species, helps maintain the ecological balance of river systems by contributing to nutrient cycling and providing prey for other wildlife. Crayfish, as both predators and prey, play a significant role in maintaining the health of aquatic ecosystems by controlling algae and detritus levels, which in turn supports a diverse range of other aquatic life.

In Europe, the rewilding of rivers through species reintroductions can have socio-economic as well as ecological benefits. Restored river ecosystems can boost local economies by enhancing opportunities for nature-based tourism and recreational activities like fishing and birdwatching.