Figure 2. Plant species identity, plant species mixture, and N addition effects on bacterial groups in the litter layer of an old growth temperate forest in Patagonia.

Relative abundance of (A) bacterial phyla, and (B) bacterial families in the litter layer of different Nothofagus tree species and of three tree species mixture under control (N−) and N-added conditions (N+). Bacterial phyla with above 1% abundance in the litter layer, and families above 5% abundance are shown.