Changes in Soil Microbial Community Structure Influenced by Agricultural Management Practices in a Mediterranean Agro-Ecosystem
Figure 1
Samples and soil characteristics biplots (A) and loadings plots (B) from RDA performed on the relative concentration of PLFAs in all management practices:residual herbicide (♦), tillage (▲), oats+tillage (○), oats straw (●), land abandonment (□) and wild forest coverage (■).
PLFAs used for microbial groups designation are marked as: underlined (bacteria), framed (fungi), * (G- bacteria), + (G+ bacteria) and “ (actinobacteria). Corg: soil organic carbon; N: total nitrogen; Csol: soluble carbon; WHC: water holding capacity; AS: aggregate stability; Cmic: microbial biomass C; BSR: basal soil respiration; qCO2: BSR/Cmic.