ShipleyPeters1990a

Référence

Shipley, B., Peters, R.H. (1990) The allometry of seed weight and seedling relative growth rate. Functional Ecology, 4(4):523-529.

Résumé

Relative growth rates of plant species are often reported to decrease with increasing seed size. The authors analyzed the allometry of seed weight and seedling relative growth rate in 204 species, comparing results to the allometric equation of animals. Seedling relative growth rate scaled significantly to seed weight in only 3 of 7 data sets. When points outside of the 95% confidence intervals of the individual regressions were removed, 5 out of the 7 data sets exhibited significant negative correlations. Slopes varied from -0.158 to +0.08 among data sets but an analysis of covariance showed that all data sets shared a common slope of -0.038. Amount of variance accounted for by seed weight varied from 68 to <1%. Plants and animals differed in their size dependendence of growth but all plant relative growth rates closely followed the regression equation based on the animal data and all plant estimates fell well within the 95% confidence intervals of the animal regression. Despite the statistical difference in slopes, there was a general concordance of the plant and animal data, indicating a similarity in the allometry of growth rates. -from Authors

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@ARTICLE { ShipleyPeters1990a,
    AUTHOR = { Shipley, B. and Peters, R.H. },
    TITLE = { The allometry of seed weight and seedling relative growth rate },
    JOURNAL = { Functional Ecology },
    YEAR = { 1990 },
    VOLUME = { 4 },
    PAGES = { 523-529 },
    NUMBER = { 4 },
    NOTE = { 02698463 (ISSN) Cited By (since 1996): 40 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English },
    ABSTRACT = { Relative growth rates of plant species are often reported to decrease with increasing seed size. The authors analyzed the allometry of seed weight and seedling relative growth rate in 204 species, comparing results to the allometric equation of animals. Seedling relative growth rate scaled significantly to seed weight in only 3 of 7 data sets. When points outside of the 95% confidence intervals of the individual regressions were removed, 5 out of the 7 data sets exhibited significant negative correlations. Slopes varied from -0.158 to +0.08 among data sets but an analysis of covariance showed that all data sets shared a common slope of -0.038. Amount of variance accounted for by seed weight varied from 68 to <1%. Plants and animals differed in their size dependendence of growth but all plant relative growth rates closely followed the regression equation based on the animal data and all plant estimates fell well within the 95% confidence intervals of the animal regression. Despite the statistical difference in slopes, there was a general concordance of the plant and animal data, indicating a similarity in the allometry of growth rates. -from Authors },
    KEYWORDS = { allometry growth rate seed weight seedling },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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