Figure captions:
Supplementary Figure 1. Number of studies based on the search
terms from Web of Science (Supplementary Text 1), grouped by the type of
isolating barrier. Black bars indicate the total number of studies, and
grey bars are the studies relevant to Daphnia speciation. Pie
chart indicating the number of relevant studies in Daphniaspeciation, grouped by studies of geographic (dark grey), ecological
(black), and non-ecological (light grey) isolation.