Figure 2. Descriptive metadata from 97 functional trait studies in bee ecology, including (a) the number of bee functional trait studies published each year (excluding one publication in the analysis from early 2023), the distribution of publications across (b) landscape contexts and (c) research topics, and (d) the frequencies of focal functional traits in these studies. Each study assessed multiple functional traits (mean = 4.39 traits), so the total number of publications containing each trait sums to greater than the 96 publications analyzed.