Räumliche Konfiguration und zeitliche Kontinuität des Blütenangebots in der Agrarlandschaft am Beispiel Triesdorf

This study investigates the spatial and temporal dynamics of floral resources in the agricultural landscape of Triesdorf, Bavaria (southern Germany), during the 2024 vegetation period. While previous research has focused on landscape-wide or land-use-typespecific floral availability, this study provides a fine-scale analysis of the continuity and connectivity of floral resources at the plot level. Data collection happened fortnightly to tri-weekly on a plot-specific basis across the 1 km² study area. The present study focuses on flowers of the genus Ranunculus as well as those plant species that are particularly favoured by wild bees (high visitor richness species). Using Chelostoma florisomne as a model organism, the potential number of brood cells was estimated based on the availability of Ranunculus flowers as well as hypothetical nesting sites. Two indices (PXbm and Flux-Index) were used to assess resource availability and connectivity. Graphab software was used to model the habitat network. Temporal continuity was analysed using a hexagonal grid. The study shows that the availability of flowers in the Triesdorf study area is strongly dependent on land use, plot-specific management and landscape configuration. Linear structures play an important role in connecting floral patches and providing resources, especially in times of low availability of floral resources.