Biodiversité

Twenty-five years since foundational publications on valuing ecosystem services for human well-being1,2, addressing the global biodiversity crisis3 still implies confronting barriers to incorporating nature’s diverse values into decision-making. These barriers include powerful interests supported by current norms and legal rules such as property rights, which determine whose values and which values of nature are acted on. A better understanding of how and why nature is (under)valued is more urgent than ever4. Notwithstanding agreements to incorporate nature’s values into actions, including the Kunming-Montreal Global Biodiversity Framework (GBF)5 and the UN Sustainable Development Goals6, predominant environmental and development policies still prioritize a subset of values, particularly those linked to markets, and ignore other ways people relate to and benefit from nature7. Arguably, a ‘values crisis’ underpins the intertwined crises of biodiversity loss and climate change8, pandemic emergence9 and socio-environmental injustices10.

Une équipe pluridisciplinaire de l’université de Cambridge, composée de spécialistes des questions climatiques, des systèmes complexes et des enjeux de gouvernance, a alerté cet été sur la nécessité d’étudier et d’évaluer les conséquences de scénarios climatiques extrêmes, encore trop largement sous-estimés par la communauté scientifique aujourd’hui.