Figure 2 in Taxonomic bias in biodiversity data and societal preferences

Figure 2. Evolution over time of the taxonomic bias for each class. The larger the circle, the higher the deviation from I, the 'ideal' number of occurrences per class if no taxonomic bias is observed. Red dots indicate negative deviations (i.e. shortfall in occurrences = under-represented classes); green dots indicate positive deviations (i.e. excess of occurrences = over-represented classes).