Figure 4. Variations of DGGE patterns of the homologous 23S rDNA fragments of both cyanobacteria and chloroplast of eukaryotic algae along the depth of the sediment core from Kusai Lake.

The red and black arrows mark DGGE bands that represent the Synechococcus and the Isochrysis, respectively, which were the dominant phytoplanktonic groups in the core. The yellow arrows mark the lower abundance Gloeotilopsis. The blue and green arrows mark Bigelowilla and Chlorella, respectively, which were only occasionally present at some depths.