Figure 2
From: Non-reliance of metazoans on stromatolite-forming microbial mats as a food resource

Frequency histogram of the δ13C signatures of all malacostracan and polychaete grazers/collectors (n = 31 samples) within the main pools at Cape Recife (A), Schoenmakerskop (B), and Seaview (C). Organisms are differentiated according to whether they are found directly within the stromatolite material (infauna: green bars) or sampled from within the pool waters (epifauna: blue bars).