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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