Figure 2: Nature Communications

Fig. 2

From: Methane- and dissolved organic carbon-fueled microbial loop supports a tropical subterranean estuary ecosystem

Fig. 2

Physicochemical profiles from the karst subterranean estuary. a Salinity-depth profiles. b Dissolved oxygen-salinity profiles. Continuous lines are cave profiles, and dashed lines are open-to-air cenote pool (POOL) profiles. H1 (halocline 1) separates meteoric freshwater (MFW) from the meteoric brackish water (MBW), and H2 (halocline 2) separates the MBW from the saline groundwater (SGW)