[1] Cranfield Univ, Cranfield MK43 0AL, Beds, England
[2] Univ Extremadura, Forestry Res Grp, INDEHESA, Plasencia, Spain
[3] AFBI, Newforge Lane, Belfast, Antrim, North Ireland
[4] Inst Elevage, 149 Rue Bercy, F-75012 Paris, France
[5] INRA, FERLUS, F-86600 Lusignan, France
[6] Veneto Agr, I-35020 Padua, Italy
[7] Univ Santiago de Compostela, Crop Prod Dept, Escuela Politecn Super, Lugo 27002, Spain
[8] Univ Lisbon, Sch Agr, Forest Res Ctr, Lisbon, Portugal
[9] Chambres Agr Charente Maritime, 2 Ave Fetilly, F-17000 La Rochelle, France
[10] Chambres Agr France, 9 Ave George V, F-75008 Paris, France
[11] Technol Educ Inst TEI Stereas Elladas, Dept Forestry & Nat Environm Management, Lamia 36100, Greece
[12] Chambres Agr Picardie, 19 Bis Rue Alexandre Dumas, F-80090 Amiens, France
[13] Agroscope, Res Div Agroecol & Environm, Reckenholzstr 191, CH-8046 Zurich, Switzerland
[14] Assoc Francaise Agroforesterie AFAF, 93 Route Pessan, F-32000 Auch, France
[15] Inst Dev Forestier IDF ACTA, 149 Rue Bercy, F-75595 Paris 12, France
[16] Brandenburg Tech Univ BTU Cottbus Senftenberg, Specialized Area Soil Protect & Recultivat, Konrad Wachsmann Allee 6, D-03046 Cottbus, Germany
[17] European Forest Inst, Yliopistokatu 6, Joensuu 80100, Finland
[18] Aarhus Univ, Dept Agroecol Agr Syst & Sustainabil, Blichers Alle 20, DK-8830 Tjele, Denmark
[19] INRA, Dept Sci Act & Dev SAD Paysage, F-35042 Rennes, France
[20] Louis Bolk Inst, Kosterijland 3, NL-3981 AJ Bunnik, Netherlands
[21] INRA, UMR SYSTEM, Dept Environm & Agron, Montpellier, France