Fig. 2From: Latitudinal patterns and interannual variations of spring phytoplankton in relation to hydrographic conditions of the southwestern Atlantic Ocean (34°–62°S)Location of sampling stations and biogeographic zonation resulting from the cluster analyses (UPGMA) based on the diatom (Jaccard’s index) depth-integrated data for the sites surveyed in November 1995 (cluster illustrated in the adjacent graph). Curves on the right-hand side of the graph show proportions of warm-water and cold-water individuals at the latitude of each sampling station (marked by their number)Back to article page