Effects of Ground Cover Management on Biotic Communities, Ecosystem Services and Disservices in Organic Deciduous Fruit Orchards in South Africa oleh Klaus Birkhofer, Matthew F. Addison, Fredrik Arvidsson, Corinna Bazelet, Janne Bengtsson, Ruan Booysen, Des Conlong, Des Conlong, Charles Haddad, Charlene Janion-Scheepers, Charlene Janion-Scheepers, Caro Kapp, Regina Lindborg, Schalk Louw, Antoinette P. Malan, Sheila G. Storey, Wijnand J. Swart, Pia Addison