Institutional change in water management collaboration: implementing the European Water Framework Directive in the German Odra river basin

摘要: The Water Framework Directive (WFD) is in the process of restructuring European water policy towards river basin management (RBM). transposition WFD requires institutional change order to comply with its substantive and procedural requirements. This paper investigates changes collaboration a federally organised Member State regard configuration involved actors spatial scale at which issues are considered. Based on qualitative methods, presents case study German Odra governance nutrient pollution whose origins located all along specifically impacts coastal zones. We looked most relevant this problem, that is, public administrations operating within different administrative boundaries, agricultural sector environmental non-governmental organisations (NGOs). In capture change, conceptual framework was constructed evaluate three interrelated levels: formal informal actors’ mental models. explain complex as product multiple dynamics, includes content shared models benefit–cost calculation takes transaction costs into consideration.