1. K. Hansson-Forman ✉ (katarina.hansson@umu.se) and C. Sandström, Dept of Political Science, Umeå Univ., Biblioteksgränd 6, SE-90187 Umeå, Sweden.
2. G. Ericsson, Dept of Wildlife, Fish and Environmental Studies, Swedish Univ. of Agricultural Sciences, Umeå, Sweden.