### Abstract

Original language | English |
---|---|

Pages (from-to) | 1974-1982 |

Number of pages | 9 |

Journal | Ecology |

Volume | 69 |

Issue number | 6 |

Publication status | Published - 1988 |

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### Cite this

*Ecology*,

*69*(6), 1974-1982.

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*Ecology*, vol. 69, no. 6, pp. 1974-1982.

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

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

JF - Ecology

SN - 0012-9658

IS - 6

ER -