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Fig. 2 | BMC Microbiology

Fig. 2

From: Do biofilm communities respond to the chemical signatures of fracking? A test involving streams in North-central Arkansas

Fig. 2

Graph depicting the number of 16S ribosomal DNA sequences generated for each of the eight study sites located in the Fayetteville shale of north-central Arkansas (X-axis) plotted according to their rarefaction scores (Chao statistic, Y-axis) as generated by the program QIIME [40]. Color of the rarefaction curve indicates study site, dots at terminus reflects ‘potentially impacted catchment zones’ (=PICZ) in red, or ‘minimally impacted catchment zone’ (=MICZ) in blue. PICZ-sites have significantly greater density of unconventional natural gas (UNG) well sites

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BMC Microbiology

ISSN: 1471-2180

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