Fig. 4From: Nutrient-limited subarctic caves harbour more diverse and complex bacterial communities than their surface soilSoil bacterial richness was associated with multiple soil properties. Relationships between bacterial ASV richness and six selected soil properties (A. pH, B. SOM, C. water content, D. \({\text{PO}}_{4}^{ - 3}\) content, E. MicC and F. microbial C:N, full results can be found in Additional file 1: Table S9). Results of linear models are given for each regression analysis within each graph and standard errors are indicated as grey shaded areas around the trend linesBack to article page