Figure 7.

Amount of daily collected pollen (g, standardised by total mass of Bombus terrestris workers) in microcolonies being offered a choice between heather or sunflower pollen, sunflower or multifloral pollen, and heather or multifloral pollen. Generalised additive mixed effect models (GAMMs) were used to fit smoothers to the data showing mean trends (±95% confidence intervals) over time. Each dot represents one data point (i.e., standardised amount of collected pollen per day for each microcolony).