1. Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
2. Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
3. Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden
4. Department of Business and Economics Studies, University of Gävle, Gävle, Sweden
5. Swedish Institute of Agricultural and Environmental Engineering, Research Institutes of Sweden (RISE), Uppsala, Sweden