- Faculté des Sciences
- Faculty of Biological Sciences [Wrocław]
- Faculty of Biology [Riga]
- Faculty of Biology [Warsaw]
- Faculty of Environmental Sciences [Prague]
- Faculty of Forest, Düzce University
- Faculty of Forestry and Wood Sciences
- Federal Institute for Less Favoured and Mountainous Areas
- Federal University of Pernambuco [Recife]
- Fédération des réserves naturelles Catalanes
- Fenner School of Environment and Society
- Finnish Environment Institute
- Finnish Meteorological Institute
- FLOW-ING MONTFERRIER SUR LEZ FRA
- Fondation I.P.H
- Fondation pour la recherche sur la Biodiversité
- Fondation pour le développement durable des régions de montagne
- FONDAZIONE EDMUND MACH SAN MICHELE ALL ADIGE ITA
- Fondazione Eni Enrico Mattei
- Fondazione Eni Enrico Mattei [Milano]
- Forestallia
- Forest Ecology and Forest Management Group [Wageningen]
- Forest Ecology and Management
- Forest Engineering Department
- Forest & Nature Lab [Melle-Gontrode]
- Forest Research Centre, School of Agriculture, Technical University of Lisbon, Tapada da Ajuda, 1349-017, Lisboa, Portugal
- Forest Research Institute
- Forest Research Institute Baden-Württemberg - Forstliche Versuchs- und Forschungsanstalt Baden-Württemberg
- Forestry and Forest Products Research Institute
- FORESTRY AND GAME MANAGEMENT RESEARCH INSTITUTE JILOVISTE CZE
- Forêts et Sociétés
- Fort Collins Science Center
- Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany]