Table 2 Co-occurrence network topology indices reported for the three rhizosheath–root system compartments (root tissue (RT), rhizosheath (RS) and rhizosphere (RH)) and the non-vegetated (NV) soil.

From: The plant rhizosheath–root niche is an edaphic “mini-oasis” in hyperarid deserts with enhanced microbial competition

Network parameter

RT

RS

RH

NV

Node

301

832

733

717

 N. bacteria (%)

199 (66)

669 (80)

549 (75)

542 (76)

 N. fungi (%)

100 (33)

159 (19)

176 (24)

159 (22)

 N. algae (%)

2 (1)

4 (1)

8 (1)

16 (2)

Interaction

2548

2550

2320

2660

 N. positive (%)

2133 (84)

1484 (58)

1568 (68)

2107 (79)

 N. negative (%)

415 (16)

1066 (42)

752 (32)

553 (21)

Degreea

17

6

6

7

Betweennessa

608

2354

2116

952

Betweenness centralitya

0.010

0.016

0.025

0.028

Cluster coefficient

0.719

0.279

0.278

0.236

Centralization

0.188

0.118

0.089

0.069

Average path length

3.167

4.678

5.52

5.939

Average neighbors

16.93

6.129

6.33

5.419

Density

0.056

0.007

0.009

0.001

Heterogeneity

0.704

1.433

1.444

1.513

Modularity

0.137

0.199

0.322

0.647

  1. RT root tissue, RS rhizosheath, RH rhizosphere, NV non vegetated.
  2. aMedian values are reported for each compartment.