Pollinator community and generalisation of pollinator spectra changes with plant niche width and local dominance

Floral traits are assumed to be the main determinants of plants' pollinator spectrum, yet a majority of temperate plant species possess traits allowing for a certain degree of generalisation of their pollinator spectrum. The actual level of pollinator spectrum generalisation is likely to be the result of both plant floral traits and the diversity and abundance of plant species a plant co-occurs with. We expect that plant species co-occurring in highly diverse plant communities should host more generalised pollinator spectra. In the present study, we explore the degree to which the composition and generalisation of plant-pollinator spectra depend on the plant’s niche width (measured as co-occurrence with other plant species) and its local dominance (as measured by mean cover in the community). For this purpose, we compiled a database of >250 plant species pollinator spectra from the literature and coupled it with data on plant niche width and local dominance based on the Czech Nationa..., Can be found in the manuscript method section. The data were compiled as part of the Floral Visitor Database v. 1.1 (hereafter FloViD) compiled as a part of the PLADIAS (Chytrý et al. 2021; data available at www.pladias.cz). We collected data from literature sources listed in the dataset. ,