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Heat map representation of most abundant (i.e., >10% in at least one well) microbial taxa across the transect. Darker colors indicate greater percent abundance than the lighter colors. The taxa found in greatest abundance across the transect are Methanohalophilus halophilus, Methanothermococcus spp., Methanococcus spp., and Methanolobus spp. 235 OTUs were identified at >1% abundance in at least one well sampled.
