(b) Coupled positive and negative interactions can display robust species coexistence to variations in model parameters. Network diagram (inset) represents the magnitude, sign and direction of the inferred inter-species interactions between CH (x1) and ER (x2). Dashed (gray) and solid (orange) lines indicate a positive and negative interaction, respectively. The line width and node size denote the magnitude of the inter-species interaction coefficients and steady-state abundance of the monospecies, respectively. Heat-map of the ratio of x1 (CH) to x2 (ER) at 72 hr as a function of the inter-species interaction coefficients α12 and α21. Initial conditions for simulations were x1o = 0.0008, x2o = 0.0158. The circle (black) indicates the inferred parameter values for the CH, ER consortium for the gLV model trained on T3. 