Sample-size requirements for evaluating population size structure
North American Journal of Fisheries Management
By: J.C. Vokoun, C.F. Rabeni, and J.S. Stanovick
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Abstract
A method with an accompanying computer program is described to estimate the number of individuals needed to construct a sample length-frequency with a given accuracy and precision. First, a reference length-frequency assumed to be accurate for a particular sampling gear and collection strategy was constructed. Bootstrap procedures created length-frequencies with increasing sample size that were randomly chosen from the reference data and then were compared with the reference length-frequency by calculating the mean squared difference. Outputs from two species collected with different gears and an artificial even length-frequency are used to describe the characteristics of the method. The relations between the number of individuals used to construct a length-frequency and the similarity to the reference length-frequency followed a negative exponential distribution and showed the importance of using 300-400 individuals whenever possible.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sample-size requirements for evaluating population size structure |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1577/1548-8675(2001)021<0660:SSRFEP>2.0.CO;2 |
| Volume | 21 |
| Issue | 3 |
| Year Published | 2001 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | North American Journal of Fisheries Management |
| First page | 660 |
| Last page | 665 |
| Google Analytic Metrics | Metrics page |