FIGURE 6.

Jaccard similarity-based cluster analysis of the amoA gene communities in different lakes worldwide. The archaeal amoA gene sequences obtained in this study were combined with those previously reported for Qinghai Lake (Jiang et al., 2009b), Lake Taihu (Wu et al., 2010), high arctic lake (Pouliot et al., 2009), Lake Kivu (Llirós et al., 2010), Spanish lakes (Auguet et al., 2011), and Danish lakes (Herrmann et al., 2009). The numbers of clones from each location are given in Table 1. “W” and “S” indicate water and sediment samples, respectively.