Five community networks (horizontal) are integrated in five categories of coordination effort (vertical) in PESI. Community networks represent the FP4 and FP5 key programs on European taxonomic indexing: Fauna Europaea, ERMS, Euro+Med PlantBase, supplemented by Index Fungorum and AlgaeBase.

 
  Part of: de Jong Y, Kouwenberg J, Boumans L, Hussey C, Hyam R, Nicolson N, Kirk P, Paton A, Michel E, Guiry M, Boegh P, Pedersen H, Enghoff H, von Raab-Straube E, Güntsch A, Geoffroy M, Müller A, Kohlbecker A, Berendsohn W, Appeltans W, Arvanitidis C, Vanhoorne B, Declerck J, Vandepitte L, Hernandez F, Nash R, Costello M, Ouvrard D, Bezard-Falgas P, Bourgoin T, Wetzel F, Glöckler F, Korb G, Ring C, Hagedorn G, Häuser C, Aktaç N, Asan A, Ardelean A, Borges P, Dhora D, Khachatryan H, Malicky M, Ibrahimov S, Tuzikov A, De Wever A, Moncheva S, Spassov N, Chobot K, Popov A, Boršić I, Sfenthourakis S, Kõljalg U, Uotila P, Olivier G, Dauvin J, Tarkhnishvili D, Chaladze G, Tuerkay M, Legakis A, Peregovits L, Gudmundsson G, Ólafsson E, Lysaght L, Galil B, Raimondo F, Domina G, Stoch F, Minelli A, Spungis V, Budrys E, Olenin S, Turpel A, Walisch T, Krpach V, Gambin M, Ungureanu L, Karaman G, Kleukers R, Stur E, Aagaard K, Valland N, Moen T, Bogdanowicz W, Tykarski P, Węsławski J, Kędra M, M. de Frias Martins A, Abreu A, Silva R, Medvedev S, Ryss A, Šimić S, Marhold K, Stloukal E, Tome D, Ramos M, Valdés B, Pina F, Kullander S, Telenius A, Gonseth Y, Tschudin P, Sergeyeva O, Vladymyrov V, Rizun V, Raper C, Lear D, Stoev P, Penev L, Rubio A, Backeljau T, Saarenmaa H, Ulenberg S (2015) PESI - a taxonomic backbone for Europe. Biodiversity Data Journal 3: e5848. https://doi.org/10.3897/BDJ.3.e5848