The programme of the United Nations Conference on Sustainable Development (Rio+20) focused on the conceptualisation and implementation of a global Green Economy. The choice of this topic is evidence of the strengthening of economic paradigms in environmental and development policy - this is true for international as well as for German policy processes. An important aspect in this regard is the "valuation of biodiversity", which does not only imply the protection, but also an economic appropriation of nature. Related concepts such as "Payment for Ecosystem Services" and "Natural Capital" provide a possibility for a calculation of the monetary valor of natural resources. However, such approaches also blank out other crucial elements of the protection of biodiversity and ecosystems.
This is the thematic focus of the present project. Discussing the political and societal discourses of the "valuation of biodiversity", the research paper contributes to the assessment of the relevance of economic evaluation systems in the context of Rio+20 and beyond. The objective was the analysis of positions, explanations and sets of argumentation of relevant actors regarding economic evaluation systems. As a conclusion, the study provided recommendations for the positioning of Germany regarding the valuation of biodiversity.