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Table 3 Group size versus estimated territory richness across studies (two-tailed Pearson correlations). Relevant data were unavailable for those years not presented. No INT territory map was constructed in 1995.

From: Long-term resource variation and group size: A large-sample field test of the Resource Dispersion Hypothesis

Year

N

Direction

r

P

Reference

Between population

1974–1979

8

+

0.91

<0.01

Kruuk & Parish 1982

Within Wytham

1982

6

-

-0.147

NS

Hofer 1988

1983

6

-

-0.543

NS

Hofer 1988

1987

8

N/A

N/A

>0.1

DaSilva 1993

1988

8

N/A

N/A

>0.1

DaSilva 1993

1993 INT

18

+

0.26

0.30

This study

1993 MCP

17

+

0.61

0.009

This study

1994 INT

19

+

0.24

0.33

This study

1994 MCP

19

+

0.09

0.73

This study

1995 MCP

18

+

0.33

0.19

This study

1997 INT

20

+

0.31

0.18

This study

1997 MCP

20

+

0.37

0.11

This study

Pooled data

1993–97 INT

57

+

0.20

0.14

This study

1993–97 MCP

74

+

0.32

0.005

This study