A mathematical model for the survivorship curve |
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| Authors: | Minoru Murai |
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| Affiliation: | 1. Entomological Laboratory, College of Agriculture, Kyoto University, Kyoto, Japan
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| Abstract: | A mathematical function describing the various kinds of survivorship curve is formulated with the useful parameter, environmental capacity. Three types of the survivorship curve illlustrated byDeevey can be obtained from changing the value of this function. When a cohort is large and the competition occurs in the scramble type, this function shows the third type ofDeevy 's and this to the first type in the case of low density and the contest type of competition. But the second type would rather be obtained by the action of density independent agencies. |
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| Keywords: | Survivorship Curve Environmental Capacity Density Dependent Mortality Optimal Environmental Condition Dependent Mortality |
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