Figure 3.

Relationships between fungal communities and environmental factors according to RDA based on DGGE profiles. Symbols indicate different sampling areas in wetlands, and the arrows indicate the types of environmental factors and their relative effects on fungal communities. The distance between symbols reflects their dissimilarity, and the relative position (in perpendicular distance) of a symbol to an arrow-line indicates the influence of the specified environmental factor on the fungal communities in different wetlands. Red, blue and green circles indicate samples from Southern China, Northern China and the Qinghai-Tibetan Plateau, respectively. A full color version of this figure is available at the ISME Journal online.