United Nations Environment Programme
Convention on Biological diversity
.
International union for conservation of nature
<European Commission DG Environment
European environment agency
Ville de Strasbourg
European Environmental Bureau
Bern Convention
Ramsar Convention on Wetlands
.
World Wide Fund for Nature
International Federation for Housing and Planning
IAU-idF
Natureparif
Rural Europe
Confederation française pour l'habitat, l'urbanisme, l'aménagement du territoire et l'environnement
Birdlife ASPO Suisse
.