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Table 6 Significant PCNM variables (spatial models with eigenfunctions associated with a positive Moran's I) for medium, fine and very fine spatial scales and results of the variation partitioning analysis using adjusted R coefficients (R a 2 ), i.e., the amount of variance explained by the environment, the spatial scales and residuals

From: Dissecting the multi-scale spatial relationship of earthworm assemblages with soil environmental variability

Species and assemblages

Number of PCNM eigenvectors

Scales

  

Variation partitioning, R a2

  

Residual unexplained

 

Medium

Fine

Very fine

Environment

Medium scale

Fine, very fine scale

Pure spatial

 

Community

6

3, 5, 8

12

33, 51

0.330 **

0.031 NS

0.01 NS

0.018

0.581

Andiodrilus

1

-

24

-

0.129 **

0.041 *

-

0.041

0.777

Aymara

9

1, 2, 5

15, 20, 24

30, 44, 47

0.002 NS

0.154 **

0.134 **

0.288

0.623

Glossodrilus

3

-

13, 24

50

0.053 *

0.081 **

0.056 **

0.141

0.785

Martiodrilus

2

5

-

56

0.032 *

0.038 *

0.048 *

0.096

0.867

New genus 1

7

3, 8

12,16

29, 33, 51

0.480 *

0.020 *

0.022 *

0.042

0.369

New genus 2

3

-

-

29, 33, 49

0.176 **

-

0.012 NS

0.013

0.812

Endogeics

4

1, 10

21

65

0.153 **

-

0.015 NS

0.016

0.816

Epigeics + anecic

7

8, 11, 15

20, 33

47, 51

0.145 **

0.098 **

0.118 **

0.235

0.639

Andiodrilus, Aymara and new genus 1

6

8, 11

20, 33

56, 63

0.198 **

0.123 **

0.077 **

0.222

0.526

Martiodrilus, Glossodrilus and new genus 2

2

2, 5

  

0.101 **

0.058 *

-

0.058

0.762

  1. * p < 0.05; ** p < 0.01; NS, not significant.