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Gene copy numbers of the 16S rRNA gene of cyanobacteria and the mcrA gene of methanogens in the biocrusts and bare soils of the lateral moraines in Tsomoriri Plains. Horizontal line: detection limit (5 × 102 gene copies gdw−1). Means ± SE of n = 6 (2 independent qPCR reactions containing 3 replicates of the PCR mixture).
