|
Region
|
Data name
|
Number of points
|
Mean NN distance (m)
|
CV of NN distance
|
Clark-Evans index R
|
p-value
|
General type of pattern
|
|---|
|
Giribes
|
Gir-1 Fairy Circles
|
277
|
22.6
|
22.4
|
1.51
|
0.002
|
Regular
|
|
Giribes
|
Gir-1 Euphorbias
|
130
|
19.8
|
60.7
|
0.90
|
0.006
|
Clustered
|
|
Giribes
|
Gir-3 Fairy Circles
|
1143
|
12.0
|
18.8
|
1.62
|
0.002
|
Regular
|
|
Brandberg
|
Bra-1 Fairy Circles
|
284
|
17.4
|
42.7
|
1.17
|
0.002
|
Regular
|
|
Brandberg
|
Bra-1 Euphorbias
|
58
|
30.1
|
56.4
|
0.92
|
0.066
|
Random
|
|
Brandberg
|
Bra-2 Fairy Circles
|
138
|
24.2
|
51.4
|
1.14
|
0.036
|
Regular
|
|
Brandberg
|
Bra-2 Euphorbias
|
87
|
24.2
|
65.2
|
0.90
|
0.024
|
Clustered
|
|
Brandberg
|
Bra-3 Fairy Circles
|
437
|
18.0
|
21.1
|
1.50
|
0.002
|
Regular
|
|
Garub
|
Gar-1 Fairy Circles
|
113
|
26.6
|
38.9
|
1.10
|
0.32
|
Random
|
|
Garub
|
Gar-1 Euphorbias
|
90
|
21.6
|
95.3
|
0.80
|
0.002
|
Clustered
|
|
Garub
|
Gar-2 Fairy Circles
|
45
|
38.5
|
55.5
|
0.91
|
0.074
|
Random
|
|
Garub
|
Gar-2 Euphorbias
|
358
|
14.5
|
52.0
|
0.97
|
0.082
|
Random
|
- NN = nearest neighbor, CV = coefficient of variation. Assessment of the spatial pattern was based on the Clark-Evans index R
- Significant deviations from random distributions towards clustered or regular patterns are indicated by p-values < 0.05. Note that there were no Euphorbias in Gir-3 and only nine Euphorbias were in Bra-3, hence these plots have not been analyzed for Euphorbias. The specific type of pattern of the Gir-3 plot was spatially periodic (cf. g-function in Fig. 5), which is a special form of a regular pattern with an extraordinary degree of ordering
