Figure legends
Figure 1. Seasonal transition of air temperature in the study site (at 3060 m elevation). Daily minimum, mean, and maximum temperatures are shown. Arrows indicate observation terms in 2017 and 2018.
Figure 2. Seasonal changes in the number of plant species at flowering (only entomophilous species) in 2017 (pale colors) and 2018 (dark colors). Plant species were classified into bee-visited (red), fly-visited (blue), and other species (gray). The percentage of blooming species in each term is shown in each of the bee-visited and fly-visited species (excluding exotic species).
Figure 3. Seasonal changes in the flower number of bee-visited and fly-visited species per plot in 2017 and 2018. Throughout the 21 permanent plots, flowering of 21 bee-visited species and 53 fly-visited species was recorded. The box plots indicate the flower number of individual species in individual plots. See Table 3 for statistical results. Bee-visited plants: red box plots with closed circles; fly-visited plants: blue box plots with open circles.
Figure 4. Seasonal changes in the abundance of major flower-visitors (a: bumble bees, b: syrphid flies, c: non-syrphid flies) in 2017 (filled circles and solid line) and 2018 (open circles and broken line).
Figure 5. Networks between flower-visiting insects and plants throughout the study periods. (a) A network between order-level insects and plant species; (b) a network between major groups of insects and plant species. Shannon-Weaver’s H’ diversity index of each insect group is shown. See Table S1 for the species code of major plant species.
Figure 6. Relationships between the mean abundance of flower-visiting insects and the number of blooming species observed in each term. (a) Bee-visited plants; (b) fly-visited plants.