FIGURE 6.

Co-occurrence networks. Network graphs of taxonomic compositions at the genus level (Taxonomy) and functional categories at level 3 (Function) affected by sequential species loss. Node color represents classification of taxonomic compositions at phylum levels and functional categories at level 1. A black edge indicated a positive interaction between two nodes, while a red edge indicated a negative interaction. The summary of key network indexes is given in the table. AAD, amino acids and derivatives; CBS, clustering-based subsystems; CHO, carbohydrates; CVP, cofactors, vitamins, prosthetic groups, pigments; CWC, cell wall and capsule; DNA, DNA metabolism; FAL, fatty acids, lipids, and isoprenoids; MAC, metabolism of aromatic compounds; MEM, membrane transport; MIS, miscellaneous; NUC, nucleosides and nucleotides; PRO, protein metabolism; RES, respiration; RNA, RNA metabolism; STR, stress response; and VDD, virulence, disease, and defense.