3bEstimatingPopulationSize

In algebraic terms this method is called the lincoln

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Unformatted text preview: whole. In algebraic terms, This method is called the Lincoln-Peterson Index of population size. In the rearranged version of the general formula, notice that the smaller the number of recaptures, the larger the estimate of population size. This makes good biological sense, because if the population is very large, the marked animals you release into the wild will be mixing with a greater number of unmarked animals, so you will recapture a lower percentage of them in your second sample. 68 Exercise 3.B. Estimating Population Size: Mark-Recapture Check your progress: A biologist nets 45 largemouth bass from a farm pond, tags their fins, and releases them unharmed. A week later, she nets 58 bass from the pond, including 26 with tags. Based on the Lincoln-Peterson index, estimate the number of bass in the pond. The Lincoln-Peterson method is fairly simple, and its calculations are straightforward, but it does depend on several assumptions. Violating the conditions of the Lincoln-Peterson model can seriously affect the accuracy of your estimate, so it is very important to bear these assumptions in mind as you interpret your results: 1...
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This note was uploaded on 09/02/2011 for the course BIOL 6C taught by Professor Sundram during the Spring '09 term at DeAnza College.

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