On the statistical significance of the Hutchinsonian size-ratio parameter

R.C. Mac Nally

    Research output: Contribution to journal › Article

    7 Citations (Scopus)

    Abstract

    A technique is presented for the analysis of sets of morphological data to test whether sympatric, closely related species form geometric series (or Hutchinsonian series, where the constant of proportionality, h, is 1.30 for linear characteristics). A basic 2 parameter model is proposed. The logarithmically transformed version of the geometric model is used. The importance of using a method that intrinsically depends upon intraspecific variation is shown. The assumptions of many existing analyses that are based only upon means or their ratios, such as homoscedasticity and negligible variances. Only a small fraction of collections of syntopic series conformed to the geometric model, and of these, few had confidence intervals for h in which 1.30 was included
    LanguageEnglish
    Pages1974-1982
    Number of pages9
    JournalEcology
    Volume69
    Issue number6
    Publication statusPublished - 1988

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    intraspecific variation
    confidence interval
    methodology
    parameter
    testing
    test
    method
    analysis

    Cite this

    Mac Nally, R.C. / On the statistical significance of the Hutchinsonian size-ratio parameter. In: Ecology. 1988 ; Vol. 69, No. 6. pp. 1974-1982.
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    abstract = "A technique is presented for the analysis of sets of morphological data to test whether sympatric, closely related species form geometric series (or Hutchinsonian series, where the constant of proportionality, h, is 1.30 for linear characteristics). A basic 2 parameter model is proposed. The logarithmically transformed version of the geometric model is used. The importance of using a method that intrinsically depends upon intraspecific variation is shown. The assumptions of many existing analyses that are based only upon means or their ratios, such as homoscedasticity and negligible variances. Only a small fraction of collections of syntopic series conformed to the geometric model, and of these, few had confidence intervals for h in which 1.30 was included",
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    Mac Nally, RC 1988, 'On the statistical significance of the Hutchinsonian size-ratio parameter', Ecology, vol. 69, no. 6, pp. 1974-1982.

    On the statistical significance of the Hutchinsonian size-ratio parameter. / Mac Nally, R.C.

    In: Ecology, Vol. 69, No. 6, 1988, p. 1974-1982.

    Research output: Contribution to journal › Article

    TY - JOUR

    T1 - On the statistical significance of the Hutchinsonian size-ratio parameter

    AU - Mac Nally, R.C.

    N1 - Cited By :7 Export Date: 6 June 2017

    PY - 1988

    Y1 - 1988

    N2 - A technique is presented for the analysis of sets of morphological data to test whether sympatric, closely related species form geometric series (or Hutchinsonian series, where the constant of proportionality, h, is 1.30 for linear characteristics). A basic 2 parameter model is proposed. The logarithmically transformed version of the geometric model is used. The importance of using a method that intrinsically depends upon intraspecific variation is shown. The assumptions of many existing analyses that are based only upon means or their ratios, such as homoscedasticity and negligible variances. Only a small fraction of collections of syntopic series conformed to the geometric model, and of these, few had confidence intervals for h in which 1.30 was included

    AB - A technique is presented for the analysis of sets of morphological data to test whether sympatric, closely related species form geometric series (or Hutchinsonian series, where the constant of proportionality, h, is 1.30 for linear characteristics). A basic 2 parameter model is proposed. The logarithmically transformed version of the geometric model is used. The importance of using a method that intrinsically depends upon intraspecific variation is shown. The assumptions of many existing analyses that are based only upon means or their ratios, such as homoscedasticity and negligible variances. Only a small fraction of collections of syntopic series conformed to the geometric model, and of these, few had confidence intervals for h in which 1.30 was included

    M3 - Article

    VL - 69

    SP - 1974

    EP - 1982

    JO - Ecology

    T2 - Ecology

    JF - Ecology

    SN - 0012-9658

    IS - 6

    ER -

    Mac Nally RC. On the statistical significance of the Hutchinsonian size-ratio parameter. Ecology. 1988;69(6):1974-1982.

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