He has worked for the IUCN, for the Swiss nature conservation organisation Pro Natura and at the  Council of Europe. He was the president of the International Commission for the Protection of the Alps (CIPRA) from 1960 to 1968. In addition he was a member of the Swiss Academy of Sciences and the Société de Physique et d'Histoire Naturelle de Genève.
He has held positions at the IUCN, the Swiss nature conservation organization Pro Natura, and the Council of Europe. He served as president of the International Commission for the Protection of the Alps (CIPRA) from 1960 to 1968, in addition to being a member of the Swiss Academy of Sciences and the Société de Physique et d'Histoire Naturelle de Genève.