A chronological contextualisation of NbS and upscaling in scientific, policy, and grey literature. Research Data that relate to the overall cumulative PhD project: Arlati, A. (2025). The (re)imagination of urban biodiversity. How nature-based solutions shape urban planning discourses, practices, and relations in Germany and Italy Alessandro Arlati Urban Planning; Urban Biodiversity Research; Discourse Netowrk Analysis This dataset contains qualitative research materials collected for the cumulative PhD project, which concerns the integration of biodiversity-related thinking into urban planning and how the new concept of nature-based solutions (NbS) is influencing the creation of visions for the future. The methodology used in two of the four articles is discourse network analysis (DNA), which builds networks between actors based on the arguments they utter. The cumulative PhD project is composed of four independent but connected scientific articles published in peer-reviewed journals and books. The dataset referred to in this metadata concerns extra materials connected to the research, which were never directly used in any of the publications. HafenCity Universität Hamburg None 2025-07-30 Dataset PDF 10.34712/042.7 Primary data collected by the author through desktop research de; en urn:nbn:de:gbv:1373-repos-14783 Hamburg, Germany This dataset is shared under a CC BY 4.0 license.