Results of cluster analysis based on mesozooplankton biovolume size spectra. In the Western North Pacific and adjacent seas from May and June to August 2011. (A) Six groups (A, B1, B2, B3, C, and D) were identified from Bray-Curtis dissimilarity connected with UPGMA. Numbers in parentheses indicate the number of stations contained in each group. (B) NMDS plots of each group. For correlation analyses with environmental parameters (temperature, salinity, latitude, and longitude), temperature and salinity showed a significant correlation (percentage indicates the coefficients of determination, r
2). (C) Mean biovolume and size composition (ESD, mm) of each group.