Figure 3: Relative proportion of organic matter sources (±SD) in the diets of dominant primary macrofaunal consumers, collected from stromatolite pools during August 2015.
From: Non-reliance of metazoans on stromatolite-forming microbial mats as a food resource
Diets were assessed using δ13C and δ15N isotopes as biotracers within a Bayesian mixing model, fitted using MixSIAR62. Proportions are expressed according to sampling sites and species, which were nested as hierarchical random factors within the mixing model. Species are reflected as infauna (green) and epifauna (blue) depending on their association with the stromatolite matrix. SOM (sediment organic matter); POM (particulate organic matter).
