Skip to main content
Fig. 1 | BMC Microbiology

Fig. 1

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

Fig. 1

a Map depicting shale plays located in the United States, with the Fayetteville Shale circled in red [44]; (b) Map of Arkansas counties showing the topographic location of the Fayetteville shale, with eastern (red), central (blue), and western (green) sections highlighted. The study region is circled in red, with closed black circles designating the locations of unconventional natural gas (UNG) well sites; c Close-up of the northern Arkansas counties within which the Fayetteville shale is distributed. The region in red is designated as the ‘potentially impacted catchment zone’ (=PICZ), a region with high UNG well density, whereas the region in green indicates the ‘minimally impacted catchment zone’ (MICZ). d Map depicting the locations of the eight study sites, with inverted red triangles designating sites grouped as PICZ, and green triangles depicting sites grouped as MICZ. The blue arrow, lower left, indicates the location of the Arkansas River

Back to article page