FC, Swiss Biodiversity Strategy, 2012-04-25, p. 26 ([Internet, 2020-10-30](https://www.bafu.admin.ch/bafu/en/home/topics/biodiversity/publications-studies/publications/swiss-biodiversity-strategy.html))
The existing joint responsibility for the protection of nature shared by the Confedera-tion, cantons and communes also arises from the constitutional principle of sustainability, according to which the Confederation and the cantons continuously endeavour to achieve a balanced relationship between nature and its capacity to renew itself, on the one hand, and the demands placed on it by the population, on the other (art. 73 Cst.).