Fig 2.

pmoA-based microarray analysis, visualized as a heatmap showing the diversity of the methanotroph community in the starting material and after incubation under conditions with in situ methane concentrations (26 days) for samples from the active nest area and reference soils, respectively. Probe names and their corresponding specificity are given elsewhere (54). The microarray analysis was performed in triplicate for each sample, and the results are shown here as averages. The color code indicates relative abundance, with red indicating a higher abundance. The probe covers type I and type II methanotrophs. Probes designated “others” are those that indicate amoA (encoding ammonia monooxygenase), pmoA2, verrucomicrobial methanotroph, and environmental sequences without known affiliations (between pmoA and amoA).