Fig. 4From: The allelopathic, adhesive, hydrophobic and toxic latex of Euphorbia species is the cause of fairy circles investigated at several locations in NamibiaThe PCA plot created from GC-MS spectra obtained from soil extracts for samples collected from DPs (green), FCs (blue) and matrix (red) collection sites. R2X(cum) = 0.998, Q2(cum) = 0.993Back to article page