1. a Centre for Sustainable Agriculture , Swedish University of Agricultural Sciences , Uppsala, Sweden
2. b Department of Urban and Rural Development , Section for Environmental Communication, Swedish University of Agricultural Sciences , Uppsala, Sweden
3. c Stockholm County Administration Board , Stockholm, Sweden
4. d Department of Urban and Rural Development, Section for Rural Development and Agroecology , Swedish University of Agricultural Sciences , Uppsala, Sweden
5. e Department of Ecology , Swedish University of Agricultural Sciences , Uppsala, Sweden