The narrative behind Simplified Ecosystem Capital Accounts (SECA): Ecosystems can be described as capital which delivers a bundle of services to people, some of which are appropriated and incorporated into products, accumulated and/or consumed. Other services are public goods of common benefit to the economy and human wellbeing. Altogether, these ecosystem services depend on ecosystem capital regeneration which is in turn influenced by ecosystem services consumption. In the fact-track accounts three groups of ecosystem services have been considered: accessible biomass/ carbon, accessible water, and accessible regulating and cultural services. Accessible refers to the share of the 'total' or 'available' resource which can be used without damaging ecosystem capital capacity. All three groups of services are generally.