Manon Deguet is a PhD candidate at Sciences Po (CERI). She is carrying out a thesis on the political construction of the rights of nature (supervision: S.Revet and F. Poupeau). Her analysis is based on the project to recognize Lake Titicaca as a subject of law, bringing together a country historically linked to international advances on the rights of nature (Bolivia) and another that resists their consecration (Peru). Through an ethnographic survey, she studies the interests and forms of relationship involved in this project, in order to understand the political, economic and social arbitrations that the rights of nature reveal.