Figure 1: Nature Communications

Fig. 1

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

Fig. 1

Study site and model for coastal karst subterranean estuary. a The Yucatan Peninsula. b In the Yucatan Peninsula (Mexico), coastal cave systems extend 12 km inland (yellow area) and cover an area of ~1100 km2 within the Holbox Fracture Zone and Xel Ha Zone (red area)—adapted from Perry et al.16 c Mapped cave conduits of Ox Bel Ha Cave System (>240 km total length)27. Cenote Bang, the primary study site, is indicated by the red circle. d Cave diver within cave system Cenote Bang. e Conceptual model of a tropical karst subterranean estuary, a density-stratified coastal aquifer—adapted from van Hengstum et al.21