A study has hailed the richness of Lavaux’s biodiversity, while highlighting the extreme fragility of the ecosystem in Switzerland’s largest single vineyard. +Get the most important news from Switzerland in your inbox "We're disappointed in a good way," biologist Raymond Delarze, who conducted the study with a team from the BEB biological research consultancy in Aigle, canton Vaud, told the Keystone-ATS news agency. The independent study, entitled "Lavaux Nature Vivante", was commissioned by the Fondation d'utilité publique Bovard in Cully. The foundation was set up in 2016 with the aim of safeguarding and enhancing the Lavaux region, near Lake Geneva. Observation work and surveys were carried out between 2021 and 2022, and completed in 2025. In all, 21 sectors covering around 15 hectares were surveyed. In each sector, a reference route of 1,000 to 1,100 metres was set. "Our work has covered half of the entire Lavaux area, giving us a representative sample," says Delarze.
