Mt. Ashland Community Composition

This figure shows the average relative abundance of Bombus species observed during field surveys in 2022 and 2024. Each bar represents the mean species composition for that year, with colors indicating different species and percentage labels highlighting major contributors.

In 2022, Bombus vosnesenskii was overwhelmingly dominant, comprising 70% of the observed individuals. By 2024, its relative abundance declined to 53%, while B. vancouverensis increased substantially, rising from a minor component to 20% of the community. Other species, including B. insularis, B. flavifrons, and those grouped as “Other,” also showed slight increases in relative abundance. It is important to note that these results are based on a relatively limited dataset, with only 1,170 observations collected across two years of sampling (525 observations for 2022 and 645 observations for 2024). To gain a more comprehensive understanding of community composition, further repeated sampling is needed.