Figure 3.

Distribution of average protein abundances for quantitative proteomic comparison of communities maintained at high and low pH. Log₂ ratios for all proteins are plotted according to taxa. Positive log₂ ratio values indicate proteins more abundant in high pH communities; negative values indicate proteins more abundant in low pH communities. The shaded area denotes values between 1 and −1 (within 2 × ), in which proteins are not considered significantly different between high and low pH comparisons. Red boxes highlight proteins from organisms that exhibited a strong response to either high or low pH. The color reproduction of this figure is available on the html full text version of the manuscript.