T-S diagrams of the six groups (A, B1, B2, B3, C, and D) identified from cluster analysis on mesozooplankton biovolume size spectra (cf. Figure
A). In the Western North Pacific and adjacent seas from May and June to August 2011. To construct T-S diagrams, hydrographic data from 0 to 1,000 m were applied. The numbers in parentheses indicate the number of stations belonging to each group.