Table 2 The nodes identified as module hubs or connectors in the networks between bacterivorous nematodes and alkaline phosphomonoesterase producing bacteria among three aggregates fractions

From: Nematode grazing promotes bacterial community dynamics in soil at the aggregate level

Networks

OTU ID

Role

Abundance (%)

Degree

Phylum

Genus

Z-valuea

P-valuea

Cluster

coefficient

Correlation b

MA

OTU2517

Module hub

1.396

19

Alphaproteobacteria

Mesorhizobium

2.514

0.152

0.404

0.861**

SMA

OTU1444

Module hub

0.130

22

Alphaproteobacteria

Mesorhizobium

2.656

0.244

0.476

0.822**

LMA

OTU1352

Module hub

0.179

21

Alphaproteobacteria

Mesorhizobium

2.886

0.117

0.605

0.958***

  1. Abbreviations: LMA, large macroaggregate; MA, microaggregate; SMA, small macroaggregate.
  2. aThe topological role of each node is determined according to two properties: the within-module connectivity Zi and the among-module connectivity Pi.
  3. bThe correlations between the dominant bacterivores Protorhabditis and keystone species were calculated. ***P<0.001; **P<0.01.
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