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Table 1 The keystone taxa in the bacterial and fungal networks under non-amended and biochar-amended treatments

From: Competitive interaction with keystone taxa induced negative priming under biochar amendments

NetworkOTU IDModuleDegreeCluster coefficientAbundance (%)aPhylum/classAffiliationZbPbDiversityCarbohydrateqCO2
FieldSIP incubation
Bacteria 
 Non-amendedOTU2131Module I80.220.251.15AlphaproteobacteriaSphingomonas2.670.22 0.3570.627*0.602*
 Biochar-amendedOTU717Module I80.230.2012.39ActinobacteriaArthrobacter3.1200.798*** 0.879*** 0.756**
 OTU316Module II90.290.090.18GemmatimonadetesGemmatimonadaceae2.950.190.617* 0.841*** 0.789***
Fungi
 Non-amendedOTU148Module II60.350.055.44EurotiomycetesAspergillus2.530 0.4790.763**0.762**
 Biochar-amendedOTU430Module II70.570.260.09SordariomycetesChaetomium2.5700.832***− 0.722** 0.654**
 OTU516Module II70.620.147.14EurotiomycetesPenicillium2.5700.609*− 0.722** 0.642**
  1. qCO2, soil metabolic quotient. *P < 0.05; **P < 0.01; ***P < 0.001.
  2. aAbundance of keystone species in the field experiment and stable isotope probing (SIP) microcosms
  3. bThe topological role of each node is determined based on two properties: the within-module connectivity Z and the among-module connectivity P