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FIGURE 10.4 (a) The number of species collected increases with the size of the sample, illustrated by Kuusela's (1979) study of the fauna on individual stones in a large Finnish river. (b) The cumulative number of species collected increases with the logarithm of cumulative number of stones sampled: 1 = River Javavankoski, Finland (Kuusela 1979); 2 = Vaal River, South Africa (Chutter and Noble 1966); 3 = Lytle Creek, Utah (Gaufin et al. 1956); 4 = Rio Java, Costa Rica (Stout and Vandermeer 1975). Solid lines are 95% confidence limits.

FIGURE 10.4 (a) The number of species collected increases with the size of the sample, illustrated by Kuusela's (1979) study of the fauna on individual stones in a large Finnish river. (b) The cumulative number of species collected increases with the logarithm of cumulative number of stones sampled: 1 = River Javavankoski, Finland (Kuusela 1979); 2 = Vaal River, South Africa (Chutter and Noble 1966); 3 = Lytle Creek, Utah (Gaufin et al. 1956); 4 = Rio Java, Costa Rica (Stout and Vandermeer 1975). Solid lines are 95% confidence limits.

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