Figure 7

Distribution of the abundances of prokaryotic phyla in the Lusaka and Kabwe sites under different fertilizer treatments and sampling dates as visualized via heatmaps. CF: chemical fertilizer amendment, CM: cattle manure amendment, PM: poultry manure amendment, MR: maize residue amendment, and NF: no fertilizer amendment. The color intensity of the scale indicates the relative abundance of each phylum. Phyla with an abundance < 2% were grouped as “others”.