This article examines the extent to which elements of ecosystem accounting are utilized in the planning forthe Oslofjord, as well as the management authorities’ expectations of this tool. Certain elements of ecosystemaccounting are already in use, particularly related to extent and condition, while there is no systematic approachto ecosystem services and valuation. Informants recognize the potential utility of ecosystem extent and conditionaccounting, but are more ambivalent regarding valuation.
Challenges include a fragmented knowledge base, varying classification systems, and unpredictable funding. A coordinated effort is necessary to establish an updated and comprehensive knowledge foundation for accounts also in marine areas. While ecosystem accounting can support management with information, it is not a guarantee for prevention of biodiversity loss. Protecting nature requires clear national guidelines for effective local and regional spatial and resource management, as well as legal measures