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.