Fig. 4: Structural equation models considering the direct and indirect pathways via which island area and isolation influence alpha, beta, and gamma diversity of soil bacteria and fungi.
From: Island biogeography of soil bacteria and fungi: similar patterns, but different mechanisms
Panel a is for bacteria; panel b is for fungi. Island isolation was measured as distance to the nearest island (note that using the nearest distance to the mainland yielded similar results). Black and red arrows indicate significant positive and negative pathways, respectively (*P < 0.05, **P < 0.01, ***P < 0.001). Numbers along the arrows indicate standardized path coefficients. R2 represents the proportion of variance explained for the dependent variable.
