Fig. 2From: Trematode diversity reflecting the community structure of Danish freshwater systems: molecular cluesIndication of host type occurrence inferred by the trematode fauna in Danish freshwater lakes (Zealand and Jutland). Note: the size of the square (occurrence rates) indicates the proportion of the host type utilized by a corresponding trematode species in each lake. The proportion was calculated based on the raw data shown in Additional file 2: Table S1Back to article page