Figure 1

Survey and sampling sites in Saga City, Saga Prefecture, Japan. Sites (black dots) are numbered from north to south and represent areas from which Desmodesmus culture strains could be established (Table 1). White circles represent sites that were surveyed but where Desmodesmus was not detected. Sites 3, 5, 12, 17, 20 were the study sites referenced in Demura et al.²⁶.