Figure 2

<p>a) Relationship between the total number of publications per order and the number of species per order. b) Relationship between the average number of publications per species within each order, and the number of species per order. Orders with low species numbers and low publication number per species are identified for information (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0089955#pone-0089955-t002" target="_blank">Table 2</a> for details on each order).