A global test of the pollination syndrome hypothesis

Jeff Ollerton, Ruben Alarcon, Nickolas M. Waser, Mary V. Price, Stella Watts, Louise Cranmer, Andrew Hingston, Craig I. Peter, John Rotenberry

    Research output: Contribution to Book/ReportChapter

    Abstract

    Background and Aims ‘Pollination syndromes’ are suites of phenotypic traits hypothesized to reflect convergent adaptations of flowers for pollination by specific types of animals. They were first developed in the 1870s and honed during the mid 20th Century. In spite of this long history and their central role in organizing research on plant–pollinator interactions, the pollination syndromes have rarely been subjected to test. The syndromes were tested here by asking whether they successfully capture patterns of covariance of floral traits and predict the most common pollinators of flowers.Methods Flowers in six communities from three continents were scored for expression of floral traits used in published descriptions of the pollination syndromes, and simultaneously the pollinators of as many species as possible were characterized.Key Results Ordination of flowers in a multivariate ‘phenotype space’ defined by the syndromes showed that almost no plant species fall within the discrete syndrome clusters. Furthermore, in approximately two-thirds of plant species, the most common pollinator could not be successfully predicted by assuming that each plant species belongs to the syndrome closest to it in phenotype space.Conclusions The pollination syndrome hypothesis as usually articulated does not successfully describe the diversity of floral phenotypes or predict the pollinators of most plant species. Caution is suggested when using pollination syndromes for organizing floral diversity, or for inferring agents of floral adaptation. A fresh look at how traits of flowers and pollinators relate to visitation and pollen transfer is recommended, in order to determine whether axes can be identified that describe floral functional diversity more successfully than the traditional syndromes.
    Original languageEnglish
    Title of host publicationAnnals of Botany
    PublisherOxford University Press
    Pages1471-1480
    Number of pages10
    ISBN (Print)0305-7364
    DOIs
    Publication statusPublished - 7 Apr 2009

    Publication series

    NameAnnals of Botany
    Volume103

    Fingerprint

    Pollination
    Phenotype
    Pollen
    History

    Keywords

    • Convergent evolution
    • floral traits
    • global
    • montane meadow
    • multidimensional scaling
    • mutualism
    • phenotype space
    • pollination syndromes
    • temperate grassland
    • test
    • tropical forest
    • tropical mountains

    Cite this

    Ollerton, J., Alarcon, R., Waser, N. M., Price, M. V., Watts, S., Cranmer, L., ... Rotenberry, J. (2009). A global test of the pollination syndrome hypothesis. In Annals of Botany (pp. 1471-1480). (Annals of Botany; Vol. 103). Oxford University Press. https://doi.org/10.1093/aob/mcp031
    Ollerton, Jeff ; Alarcon, Ruben ; Waser, Nickolas M. ; Price, Mary V. ; Watts, Stella ; Cranmer, Louise ; Hingston, Andrew ; Peter, Craig I. ; Rotenberry, John. / A global test of the pollination syndrome hypothesis. Annals of Botany. Oxford University Press, 2009. pp. 1471-1480 (Annals of Botany).
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    title = "A global test of the pollination syndrome hypothesis",
    abstract = "Background and Aims ‘Pollination syndromes’ are suites of phenotypic traits hypothesized to reflect convergent adaptations of flowers for pollination by specific types of animals. They were first developed in the 1870s and honed during the mid 20th Century. In spite of this long history and their central role in organizing research on plant–pollinator interactions, the pollination syndromes have rarely been subjected to test. The syndromes were tested here by asking whether they successfully capture patterns of covariance of floral traits and predict the most common pollinators of flowers.Methods Flowers in six communities from three continents were scored for expression of floral traits used in published descriptions of the pollination syndromes, and simultaneously the pollinators of as many species as possible were characterized.Key Results Ordination of flowers in a multivariate ‘phenotype space’ defined by the syndromes showed that almost no plant species fall within the discrete syndrome clusters. Furthermore, in approximately two-thirds of plant species, the most common pollinator could not be successfully predicted by assuming that each plant species belongs to the syndrome closest to it in phenotype space.Conclusions The pollination syndrome hypothesis as usually articulated does not successfully describe the diversity of floral phenotypes or predict the pollinators of most plant species. Caution is suggested when using pollination syndromes for organizing floral diversity, or for inferring agents of floral adaptation. A fresh look at how traits of flowers and pollinators relate to visitation and pollen transfer is recommended, in order to determine whether axes can be identified that describe floral functional diversity more successfully than the traditional syndromes.",
    keywords = "Convergent evolution, floral traits, global, montane meadow, multidimensional scaling, mutualism, phenotype space, pollination syndromes, temperate grassland, test, tropical forest, tropical mountains",
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    Ollerton, J, Alarcon, R, Waser, NM, Price, MV, Watts, S, Cranmer, L, Hingston, A, Peter, CI & Rotenberry, J 2009, A global test of the pollination syndrome hypothesis. in Annals of Botany. Annals of Botany, vol. 103, Oxford University Press, pp. 1471-1480. https://doi.org/10.1093/aob/mcp031

    A global test of the pollination syndrome hypothesis. / Ollerton, Jeff; Alarcon, Ruben; Waser, Nickolas M.; Price, Mary V.; Watts, Stella; Cranmer, Louise; Hingston, Andrew; Peter, Craig I.; Rotenberry, John.

    Annals of Botany. Oxford University Press, 2009. p. 1471-1480 (Annals of Botany; Vol. 103).

    Research output: Contribution to Book/ReportChapter

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    T1 - A global test of the pollination syndrome hypothesis

    AU - Ollerton, Jeff

    AU - Alarcon, Ruben

    AU - Waser, Nickolas M.

    AU - Price, Mary V.

    AU - Watts, Stella

    AU - Cranmer, Louise

    AU - Hingston, Andrew

    AU - Peter, Craig I.

    AU - Rotenberry, John

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    N2 - Background and Aims ‘Pollination syndromes’ are suites of phenotypic traits hypothesized to reflect convergent adaptations of flowers for pollination by specific types of animals. They were first developed in the 1870s and honed during the mid 20th Century. In spite of this long history and their central role in organizing research on plant–pollinator interactions, the pollination syndromes have rarely been subjected to test. The syndromes were tested here by asking whether they successfully capture patterns of covariance of floral traits and predict the most common pollinators of flowers.Methods Flowers in six communities from three continents were scored for expression of floral traits used in published descriptions of the pollination syndromes, and simultaneously the pollinators of as many species as possible were characterized.Key Results Ordination of flowers in a multivariate ‘phenotype space’ defined by the syndromes showed that almost no plant species fall within the discrete syndrome clusters. Furthermore, in approximately two-thirds of plant species, the most common pollinator could not be successfully predicted by assuming that each plant species belongs to the syndrome closest to it in phenotype space.Conclusions The pollination syndrome hypothesis as usually articulated does not successfully describe the diversity of floral phenotypes or predict the pollinators of most plant species. Caution is suggested when using pollination syndromes for organizing floral diversity, or for inferring agents of floral adaptation. A fresh look at how traits of flowers and pollinators relate to visitation and pollen transfer is recommended, in order to determine whether axes can be identified that describe floral functional diversity more successfully than the traditional syndromes.

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    KW - Convergent evolution

    KW - floral traits

    KW - global

    KW - montane meadow

    KW - multidimensional scaling

    KW - mutualism

    KW - phenotype space

    KW - pollination syndromes

    KW - temperate grassland

    KW - test

    KW - tropical forest

    KW - tropical mountains

    UR - http://www.mendeley.com/research/global-test-pollination-syndrome-hypothesis

    U2 - 10.1093/aob/mcp031

    DO - 10.1093/aob/mcp031

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    SN - 0305-7364

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    Ollerton J, Alarcon R, Waser NM, Price MV, Watts S, Cranmer L et al. A global test of the pollination syndrome hypothesis. In Annals of Botany. Oxford University Press. 2009. p. 1471-1480. (Annals of Botany). https://doi.org/10.1093/aob/mcp031