Fig. 5

Microbial association networks for pairs of microorganisms inhabiting location 5, across the three flights. Cytoscape was used to construct and visualize these networks across three flights: Flight 1 (F1), Flight 2 (F2) and Flight 3 (F3). The nodes are labelled with microorganisms that inhabit the site at that respective time point. The directed edges are directed from the metabolically supportive microorganism to the metabolically dependent microorganism. The color of these directed edges are mapped to the Metabolic Support Indices (MSI), represented as percentages, such that the gradient from light blue to dark blue represents an increasing MSI