Figure 2
From: A roadmap to define and select aquatic biological traits at different scales of analysis

Distribution of the maximum number of taxa registered and described for each Trait standardised name over the three hierarchical levels from our unified nomenclature proposal: Trait descriptors, Traits classification and Trait standardised name. For clarity, data were divided into three alluvial diagrams corresponding to the three Trait descriptors: Biological (a), Distribution (b) and Ecological (c). Colours are the same as in Fig. 1 and correspond to the different Traits classifications. The size of the bars is proportional to the number of studies for which databases containing information on each hierarchical level of traits are available.