Table 4 PERMANOVA of earthworms (PERMANOVA EW; left) and springtails (PERMANOVA COL; right) and management practices, plant ecological indicators, soil characteristics and garden characteristics as explanatory variables.

From: Direct and indirect effects of urban gardening on aboveground and belowground diversity influencing soil multifunctionality

 

Df

Earthworms

Springtails

F

R2

P

F

R2

P

Management practices

Management Intensity

1

1.1

0.01

0.37

1.3

0.01

0.18

Water

1

1

0.01

0.43

2.5

0.01

<0.001**

Fertiliser

1

1.8

0.01

0.09

1.4

0.01

0.14

Pesticides

1

0.6

0.01

0.75

1.3

0.01

0.19

Disturbance

1

2.4

0.01

0.02*

1.2

0.01

0.24

Weeding

1

1.6

0.01

0.11

1.8

0.01

0.04*

Plant ecological indicators

Moisture

1

1.5

0.01

0.15

3.7

0.02

<0.001***

Moisture Variability

1

1.9

0.01

0.06

3.7

0.02

<0.001***

Basification

1

1.4

0.01

0.18

2

0.01

0.02*

Nutrients

1

5.9

0.04

<0.001***

5.4

0.03

<0.001***

Humus

1

3

0.02

0.01**

0.6

0.01

0.82

Aeration

1

1.2

0.01

0.29

1.8

0.01

0.05*

Root depth

1

0.6

0.01

0.82

0.7

0.01

0.74

Soil characteristics

Physical measurements

SA

1

1.9

0.01

0.06

1.8

0.01

0.05

PR

1

5.3

0.03

<0.001***

2.3

0.01

0.01**

BD

1

1.1

0.01

0.36

0.7

0.01

0.81

Chemical measurements

Mg

1

2.1

0.01

0.04*

1.3

0.01

0.2

P

1

1.1

0.01

0.32

0.6

0.01

0.81

Fe

1

1.4

0.01

0.17

0.7

0.01

0.81

K

1

2.7

0.02

0.01*

2.5

0.01

<0.001**

pH

1

0.8

0.01

0.55

1.1

0.01

0.36

Mn

1

0.7

0.01

0.72

0.7

0.01

0.79

Biological measurements

Corg

1

0.8

0.01

0.6

0.9

0.01

0.52

Cmic

1

0.6

0.01

0.73

2.1

0.01

0.02*

Fungi

1

0.8

0.01

0.62

1.8

0.01

0.04*

Bacteria

1

0.7

0.01

0.71

0.8

0.01

0.63

Garden characteristics

Land-use type

2

1

0.01

0.41

2.8

0.03

<0.001***

Urbanisation

1

1.4

0.01

0.17

1.8

0.01

0.04*

Residuals

119

 

0.72

  

0.69

 
  1. SA: Soil stable aggregates, BD: Soil bulk density, PR: Penetration resistance.