The hegemony of the 'despots': the control of avifaunas over vast continental areas

Ralph MAC NALLY, Alex Kutt, Teresa Eyre, Justin Perry, Eric Vanderduys, Michael Mathieson, Daniel Ferguson, Jim THOMSON

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    Aim We explored whether one native bird (the yellow-throated miner Manorina flavigula) greatly affected the composition of avifaunas in > 500,000 km2 in northern Australia. Location Rangelands of north-eastern Australia Methods Repeated avian surveys were conducted in 368 locations, for which in-site vegetation and landscape-contextual measurements were made. Hierarchical Bayesian models were used to determine whether avian assemblages were affected by variation in abundances of the yellow-throated miner. Results Variation in the abundances of the yellow-throated miner appeared to be governed largely by vegetation cover in surrounding landscapes. Summed abundances and richness of birds less massive than the yellow-throated miner (<53 g) were negatively associated with abundances of the yellow-throated miner. Variation in other widely distributed species with larger body masses than the yellow-throated miner (> 53 g) bird could not explain the patterns of variation in small- bodied species as well as the yellow-throated miner. There were no relationships between abundances and richness of larger species and abundances of the yellow-throated miner. Main conclusions The genus Manorina appears to be a competitive despot insofar as species smaller than it are concerned. There now is strong evidence that the local composition of avifaunas over much of a continent is controlled by the indiscriminate aggression of a colonial genus. Many of the existing ideas in community ecology that have been proffered for explaining the composition of vertebrate assemblages are inadequate for these assemblages given the profound influence of species of the genus Manorina. The mooted agricultural expansion of development in northern Australia almost certainly would favour the spread of the yellow-throated miner and probably will depress the occurrence and abundances of small-bodied bird species.
    Original languageEnglish
    Pages (from-to)1071-1083
    Number of pages13
    JournalDiversity and Distributions
    Volume20
    DOIs
    Publication statusPublished - 2014

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    hegemony
    birds
    bird
    community ecology
    rangelands
    vegetation cover
    aggression
    vertebrates
    rangeland
    vegetation
    vertebrate

    Cite this

    MAC NALLY, R., Kutt, A., Eyre, T., Perry, J., Vanderduys, E., Mathieson, M., ... THOMSON, J. (2014). The hegemony of the 'despots': the control of avifaunas over vast continental areas. Diversity and Distributions, 20, 1071-1083. https://doi.org/10.1111/ddi.12211
    MAC NALLY, Ralph ; Kutt, Alex ; Eyre, Teresa ; Perry, Justin ; Vanderduys, Eric ; Mathieson, Michael ; Ferguson, Daniel ; THOMSON, Jim. / The hegemony of the 'despots': the control of avifaunas over vast continental areas. In: Diversity and Distributions. 2014 ; Vol. 20. pp. 1071-1083.
    @article{a16c39ccc2a04f77a514cc62b05e74d5,
    title = "The hegemony of the 'despots': the control of avifaunas over vast continental areas",
    abstract = "Aim We explored whether one native bird (the yellow-throated miner Manorina flavigula) greatly affected the composition of avifaunas in > 500,000 km2 in northern Australia. Location Rangelands of north-eastern Australia Methods Repeated avian surveys were conducted in 368 locations, for which in-site vegetation and landscape-contextual measurements were made. Hierarchical Bayesian models were used to determine whether avian assemblages were affected by variation in abundances of the yellow-throated miner. Results Variation in the abundances of the yellow-throated miner appeared to be governed largely by vegetation cover in surrounding landscapes. Summed abundances and richness of birds less massive than the yellow-throated miner (<53 g) were negatively associated with abundances of the yellow-throated miner. Variation in other widely distributed species with larger body masses than the yellow-throated miner (> 53 g) bird could not explain the patterns of variation in small- bodied species as well as the yellow-throated miner. There were no relationships between abundances and richness of larger species and abundances of the yellow-throated miner. Main conclusions The genus Manorina appears to be a competitive despot insofar as species smaller than it are concerned. There now is strong evidence that the local composition of avifaunas over much of a continent is controlled by the indiscriminate aggression of a colonial genus. Many of the existing ideas in community ecology that have been proffered for explaining the composition of vertebrate assemblages are inadequate for these assemblages given the profound influence of species of the genus Manorina. The mooted agricultural expansion of development in northern Australia almost certainly would favour the spread of the yellow-throated miner and probably will depress the occurrence and abundances of small-bodied bird species.",
    keywords = "Assemblage composition, behavioural dominance, interspecific competition, landscape structure, Manorina honeyeaters, Meliphagidae, niche differentiation, northern Australia, size-specific competition.",
    author = "{MAC NALLY}, Ralph and Alex Kutt and Teresa Eyre and Justin Perry and Eric Vanderduys and Michael Mathieson and Daniel Ferguson and Jim THOMSON",
    year = "2014",
    doi = "10.1111/ddi.12211",
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    MAC NALLY, R, Kutt, A, Eyre, T, Perry, J, Vanderduys, E, Mathieson, M, Ferguson, D & THOMSON, J 2014, 'The hegemony of the 'despots': the control of avifaunas over vast continental areas', Diversity and Distributions, vol. 20, pp. 1071-1083. https://doi.org/10.1111/ddi.12211

    The hegemony of the 'despots': the control of avifaunas over vast continental areas. / MAC NALLY, Ralph; Kutt, Alex; Eyre, Teresa; Perry, Justin; Vanderduys, Eric; Mathieson, Michael; Ferguson, Daniel; THOMSON, Jim.

    In: Diversity and Distributions, Vol. 20, 2014, p. 1071-1083.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - The hegemony of the 'despots': the control of avifaunas over vast continental areas

    AU - MAC NALLY, Ralph

    AU - Kutt, Alex

    AU - Eyre, Teresa

    AU - Perry, Justin

    AU - Vanderduys, Eric

    AU - Mathieson, Michael

    AU - Ferguson, Daniel

    AU - THOMSON, Jim

    PY - 2014

    Y1 - 2014

    N2 - Aim We explored whether one native bird (the yellow-throated miner Manorina flavigula) greatly affected the composition of avifaunas in > 500,000 km2 in northern Australia. Location Rangelands of north-eastern Australia Methods Repeated avian surveys were conducted in 368 locations, for which in-site vegetation and landscape-contextual measurements were made. Hierarchical Bayesian models were used to determine whether avian assemblages were affected by variation in abundances of the yellow-throated miner. Results Variation in the abundances of the yellow-throated miner appeared to be governed largely by vegetation cover in surrounding landscapes. Summed abundances and richness of birds less massive than the yellow-throated miner (<53 g) were negatively associated with abundances of the yellow-throated miner. Variation in other widely distributed species with larger body masses than the yellow-throated miner (> 53 g) bird could not explain the patterns of variation in small- bodied species as well as the yellow-throated miner. There were no relationships between abundances and richness of larger species and abundances of the yellow-throated miner. Main conclusions The genus Manorina appears to be a competitive despot insofar as species smaller than it are concerned. There now is strong evidence that the local composition of avifaunas over much of a continent is controlled by the indiscriminate aggression of a colonial genus. Many of the existing ideas in community ecology that have been proffered for explaining the composition of vertebrate assemblages are inadequate for these assemblages given the profound influence of species of the genus Manorina. The mooted agricultural expansion of development in northern Australia almost certainly would favour the spread of the yellow-throated miner and probably will depress the occurrence and abundances of small-bodied bird species.

    AB - Aim We explored whether one native bird (the yellow-throated miner Manorina flavigula) greatly affected the composition of avifaunas in > 500,000 km2 in northern Australia. Location Rangelands of north-eastern Australia Methods Repeated avian surveys were conducted in 368 locations, for which in-site vegetation and landscape-contextual measurements were made. Hierarchical Bayesian models were used to determine whether avian assemblages were affected by variation in abundances of the yellow-throated miner. Results Variation in the abundances of the yellow-throated miner appeared to be governed largely by vegetation cover in surrounding landscapes. Summed abundances and richness of birds less massive than the yellow-throated miner (<53 g) were negatively associated with abundances of the yellow-throated miner. Variation in other widely distributed species with larger body masses than the yellow-throated miner (> 53 g) bird could not explain the patterns of variation in small- bodied species as well as the yellow-throated miner. There were no relationships between abundances and richness of larger species and abundances of the yellow-throated miner. Main conclusions The genus Manorina appears to be a competitive despot insofar as species smaller than it are concerned. There now is strong evidence that the local composition of avifaunas over much of a continent is controlled by the indiscriminate aggression of a colonial genus. Many of the existing ideas in community ecology that have been proffered for explaining the composition of vertebrate assemblages are inadequate for these assemblages given the profound influence of species of the genus Manorina. The mooted agricultural expansion of development in northern Australia almost certainly would favour the spread of the yellow-throated miner and probably will depress the occurrence and abundances of small-bodied bird species.

    KW - Assemblage composition

    KW - behavioural dominance

    KW - interspecific competition

    KW - landscape structure

    KW - Manorina honeyeaters

    KW - Meliphagidae

    KW - niche differentiation

    KW - northern Australia

    KW - size-specific competition.

    U2 - 10.1111/ddi.12211

    DO - 10.1111/ddi.12211

    M3 - Article

    VL - 20

    SP - 1071

    EP - 1083

    JO - Diversity and Distributions

    JF - Diversity and Distributions

    SN - 1366-9516

    ER -