Figure 2
From: Impact of diesel and biodiesel contamination on soil microbial community activity and structure
Two-dimensional solution of non-metric multi-dimensional scaling (MDS) ordination analysis and multiple response permutation procedure (MRPP) of PLFA profiles from an upper slope and lower slope soils under three different treatments (control, diesel and biodiesel). Percentage values in axes represent the percentage of variance explained by each axis. Vectors indicate direction and strength of relationships of specific PLFA groups and environmental variables (not included in matrix distance calculations). G+ and G− represent absolute Gram positive and and Gram negative biomarker abundance, respectively. Relative abundance G+ and G− biomarkers are shown as mol%. TOC = total organic carbon and TC = total carbon. The full list of soil parameters analyzed and specific PLFA biomarkers by treatment and slope are provided in Tables S2 and S3, respectively.
