Hiedanpää J, Borgström S (2014) Why do some institutional arrangements succeed? Voluntary protection of forest biodiversity in Southwestern Finland and of the Golden Eagle in Finnish LaplandNature Conservation 7: 2950. http://www.pensoft.net/journals/natureconservation/article/6497/why-do-some-institutional-arrangements-succeed-voluntary-protection-of-forest-biodiversity-in%C2%A0southwestern-finland-and-