Table 2

Data summary.

2007

2008

Jan - Apr

May - Sept

Oct - Dec

May - Sept

Oct - Dec


Season Label

T1

D1

W1

D2

W2

No. of individuals

161

201

170

165

154

Observation days

48

68

44

62

37

Mean group size1

3

3

2.8

3

2.9

Max. group size1

12

13

12

17

10

Mean SRI

0.015

0.011

0.012

0.011

0.013

SD SRI

0.092

0.071

0.07

0.062

0.08

% Non-zero SRI

4.5

4.4

5.3

5.8

4.4

Mean non-zero SRI

0.34

0.25

0.23

0.19

0.29

Number of clusters2

24

24

18

18

15

Mean cluster size2

6.7

8.3

9.4

9.2

10.3

Max cluster size2

29

29

44

44

23


1Group size here refers to the number of adult females in a group after data aggregation (see Methods). 3Clusters are obtained using the Girvan-Newman algorithm with the SRI threshold equal to zero (see Methods). Distributions of group sizes and cluster sizes are shown in Figure 6.

de Silva et al. BMC Ecology 2011 11:17   doi:10.1186/1472-6785-11-17

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