ALT Some general patterns of studies on chemodiversity in plants. (a) A total of 89 studies were found in the systematic literature search, with an increased number of studies published in recent years. (b) Number of studies using different measures of chemodiversity. “Richness,” “Evenness” and “Disparity” are the components of diversity as described in the main text. (c) Number of studies done on different types of plants. (d) Number of studies that tested effects of chemodiversity on different types of interacting organisms. Numbers above bars in (b), (c), and (d) indicate the number of studies.