Figure 1

An Overview of Lake Untersee’s Anoxic Basin. (A) Satellite view of Lake Untersee and a cross-section of the bathymetry of the lake with the location of the anoxic trough in the South basin. (B) Dissolved methane concentrations within the South basin. (C) Dissolved oxygen concentrations and temperature within the South basin. (D) pH and conductivity in the South basin. Image credit: satellite imagery (©Maxar) provided by NextView License, depth profiles modified from Wand et al., 2006 and Dale Andersen, unpublished data.