This paper examines philosophical debates about concepts of biodiversity, making the case for conceptual pluralism. Taking a pragmatist perspective, I argue that normative concepts of biodiversity and eco-centric concepts of biodiversity can serve different purposes. The former would help stress the values of local communities, which have often been neglected by both early scientific approaches to conservation, and by policy makers prioritizing the political or economic interests of specific groups. The latter would help build local research programs independent of pressures (...) from economic or political actors. I employ a case study on environmental research on walnut forests in Kyrgyzstan in support of my argument. Against tendencies to frame different understandings of biodiversity in terms of geographical areas, I propose an interpretation drawing on the philosophy of ecology. Adherence to environmental pragmatism enables a sufficiently complex picture of developing environmental research in the area, capturing issues about scientific framings and local understandings. (shrink)