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Length-converted catch curves: a powerful tool for fisheries research in the Tropics (part 1)

Author

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  • Pauly, D.

Abstract

A number of methods are available with the help of which total mortality (Z) can be estimated from length-frequency data. Thus it is possible to obtain reasonable estimates of Z from the mean length in a representative sample, or from the slope of Jones' cumulative plot. In this article, a variety of approaches for analysing length-frequency data are presented which represent the functional equivalent of [age structured] catch curves; these "length-converted catch curves" are built around assumptions similar to those involved in age-structured catch curves.

Suggested Citation

  • Pauly, D., 1983. "Length-converted catch curves: a powerful tool for fisheries research in the Tropics (part 1)," Fishbyte, The WorldFish Center, vol. 1(2), pages 9-13.
    • Handle: RePEc:wfi:wfbyte:38112
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    File URL: http://hdl.handle.net/20.500.12348/3569
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    Cited by:

    1. Moreau, J. & Palomares, M.L.D. & Torres, F.S.B., Jr. & Pauly, D., 1995. "Atlas demographique des populations de poissons d'eau douce d'Afrique," Monographs, The WorldFish Center, number 10441, April.
    2. Ingles, J. & Pauly, D., 1984. "An atlas of the growth, mortality and recruitment of Philippine fishes," Monographs, The WorldFish Center, number 12326, April.
    3. Moreau, J. & Palomares, M.L.D. & Torres, F.S.B. & Pauly, Daniel, 1995. "Atlas demographique des populations de poissons d'eau douce d'Afrique," Technical Reports 44838, Worldfish Center.

    More about this item

    Keywords

    Length frequency; Catch curves; Mathematical analysis;
    All these keywords.

    JEL classification:

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

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