Approximate sample sizes required to estimate length distributions
Transactions of the American Fisheries Society
By: L.E. Miranda
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Abstract
The sample sizes required to estimate fish length were determined by bootstrapping from reference length distributions. Depending on population characteristics and species-specific maximum lengths, 1-cm length-frequency histograms required 375-1,200 fish to estimate within 10% with 80% confidence, 2.5-cm histograms required 150-425 fish, proportional stock density required 75-140 fish, and mean length required 75-160 fish. In general, smaller species, smaller populations, populations with higher mortality, and simpler length statistics required fewer samples. Indices that require low sample sizes may be suitable for monitoring population status, and when large changes in length are evident, additional sampling effort may be allocated to more precisely define length status with more informative estimators. ?? Copyright by the American Fisheries Society 2007.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Approximate sample sizes required to estimate length distributions |
| Series title | Transactions of the American Fisheries Society |
| DOI | 10.1577/T06-151.1 |
| Volume | 136 |
| Issue | 2 |
| Year Published | 2007 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Transactions of the American Fisheries Society |
| First page | 409 |
| Last page | 415 |
| Google Analytic Metrics | Metrics page |