Figure 3 Variation in species-level taxonomic composition of
marine bivalves across a latitudinal gradient along the eastern
coastline of Australia. The y-axis in each panel shows the position of
the point along the first axis of a Principal Coordinates Analysis
(PCoA). Sites that cluster together vertically are inferred to have a
similar taxonomic composition. (a ) Results from field
collection. The other panels show different subsets of an OBIS dataset
– the full dataset (b ), inclusive of observational data
(c ) and matched to field sites (d ).