Abstract

Abstract The growth of a population of Euterpina acutifrons, supplied with abundant algal food, has been followed in mass culture. At the same time the growth was simulated by a simple deterministic model. The two growth curves were compared: the experimental population was observed to grow at a rather lower intrinsic rate of increase than did the theoretical population. There was a clear tendency to reach a stable age distribution for both experimental and theoretical populations, as shown by the lowering of the fluctuations of Γ's values. These last approached the value of Γ as calcutated by Birch's method on data relative to individual cultures.

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