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. 2014 Aug 1;9(8):e103859. doi: 10.1371/journal.pone.0103859

Figure 4. Principal component analysis (PCA) of the phospholipid fatty acid data in alpine grasslands.

Figure 4

The composition of soil microbial communities (A and C) and the composition dissimilarity between the control and warming treatments (B and D) at the 0–10 and 10–20 cm soil depths of alpine swamp meadow (ASM), alpine meadow (AM), and alpine steppe (AS). Error bars indicate standard errors. Dissimilarity was assessed by calculating the Euclidean distances between the PC values. Star symbols indicate significant differences in the mean values of dissimilarity at the 0.05 probability level based on permutation tests (999 permutations).