Figure 3
From: Sources of solutes and carbon cycling in perennially ice-covered Lake Untersee, Antarctica
(A) Photograph of microbial mats, large conical stromatolites and pinnacles growing in Lake Untersee at 12–13 m depth. Note the clarity of the water column which is a reflection of the nutrient-starved water (e.g., very little DIC or P). (B) Organic carbon content, δ13C and 14C profiles of three microbial mats in Lake Untersee, Antarctica. Cores taken in proximity to photograph shown in A.
