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Correction to the Beverton and Holt Z-estimator for truncated catch length-frequency distributions

Author

Listed:
  • Ault, J.S.
  • Ehrhardt, N.M.

Abstract

A method for estimating the instantaneous mortality rate (Z) is presented which was developed from a truncated equation for average length. The model has zero bias at equilibrium, but has no explicit solution for Z so that its solution requires a numerical method.

Suggested Citation

  • Ault, J.S. & Ehrhardt, N.M., 1991. "Correction to the Beverton and Holt Z-estimator for truncated catch length-frequency distributions," Fishbyte, The WorldFish Center, vol. 9(1), pages 37-39.
    • Handle: RePEc:wfi:wfbyte:27733
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    File URL: http://hdl.handle.net/20.500.12348/3078
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    More about this item

    Keywords

    Mortality; Growth; Stock assessment; Methodology; Mathematical models;
    All these keywords.

    JEL classification:

    • Q00 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General - - - General

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