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Fig. 1 | Helgoland Marine Research

Fig. 1

From: Latitudinal patterns and interannual variations of spring phytoplankton in relation to hydrographic conditions of the southwestern Atlantic Ocean (34°–62°S)

Fig. 1

General surface circulation pattern in the southwestern Atlantic Ocean modified from Peterson and Stramma (1991). 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 1994 (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)

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