Turnover dynamics of breeding land birds on islands: is island biogeographic theory ‘true but trivial’ over decadal time-scales?

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    The theory of island biogeography has revolutionised the study of island biology stimulating considerable debate and leading to the development of new advances in related areas. One criticism of the theory is that it is ‘true but trivial’, i.e., on the basis of analyses of annual turnovers of organisms on islands, it has been posited that stochastic turnover mainly comprises rare species, or repeated immigrations and extinctions thereof, and thereby contribute little to the overall ecological dynamics. Here, both the absolute and relative turnover of breeding land birds are analysed for populations on Skokholm, Wales, over census intervals of 1, 3, 6, 12, and 24 years. As expected, over short census intervals (≤6 years), much of the turnover comprised repeated colonisations and extinctions of rare species. However, at longer intervals (12 and 24 years), a sizeable minority of species (11% of the total recorded) showed evidence of colonisation and/or extinction events despite sizeable populations (some upwards of 50 pairs). These results suggest that a longer-term view is required to take into account turnover involving more common species.
    Original languageEnglish
    JournalDiversity
    Volume9
    Issue number1
    Early online date11 Jan 2017
    DOIs
    Publication statusE-pub ahead of print - 11 Jan 2017

    Fingerprint

    extinction
    birds
    breeding
    Wales
    immigration
    biogeography
    Biological Sciences
    organisms
    rare species

    Keywords

    • Island biogeography
    • turnover
    • immigration
    • extinction
    • population
    • birds (Aves)
    • ecology

    Cite this

    @article{3ee5cda845f140ff92a01cb41fdcc96d,
    title = "Turnover dynamics of breeding land birds on islands: is island biogeographic theory ‘true but trivial’ over decadal time-scales?",
    abstract = "The theory of island biogeography has revolutionised the study of island biology stimulating considerable debate and leading to the development of new advances in related areas. One criticism of the theory is that it is ‘true but trivial’, i.e., on the basis of analyses of annual turnovers of organisms on islands, it has been posited that stochastic turnover mainly comprises rare species, or repeated immigrations and extinctions thereof, and thereby contribute little to the overall ecological dynamics. Here, both the absolute and relative turnover of breeding land birds are analysed for populations on Skokholm, Wales, over census intervals of 1, 3, 6, 12, and 24 years. As expected, over short census intervals (≤6 years), much of the turnover comprised repeated colonisations and extinctions of rare species. However, at longer intervals (12 and 24 years), a sizeable minority of species (11{\%} of the total recorded) showed evidence of colonisation and/or extinction events despite sizeable populations (some upwards of 50 pairs). These results suggest that a longer-term view is required to take into account turnover involving more common species.",
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    author = "Duncan McCollin",
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    doi = "10.3390/d9010003",
    language = "English",
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    Turnover dynamics of breeding land birds on islands: is island biogeographic theory ‘true but trivial’ over decadal time-scales? / McCollin, Duncan.

    In: Diversity, Vol. 9, No. 1, 11.01.2017.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Turnover dynamics of breeding land birds on islands: is island biogeographic theory ‘true but trivial’ over decadal time-scales?

    AU - McCollin, Duncan

    PY - 2017/1/11

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    N2 - The theory of island biogeography has revolutionised the study of island biology stimulating considerable debate and leading to the development of new advances in related areas. One criticism of the theory is that it is ‘true but trivial’, i.e., on the basis of analyses of annual turnovers of organisms on islands, it has been posited that stochastic turnover mainly comprises rare species, or repeated immigrations and extinctions thereof, and thereby contribute little to the overall ecological dynamics. Here, both the absolute and relative turnover of breeding land birds are analysed for populations on Skokholm, Wales, over census intervals of 1, 3, 6, 12, and 24 years. As expected, over short census intervals (≤6 years), much of the turnover comprised repeated colonisations and extinctions of rare species. However, at longer intervals (12 and 24 years), a sizeable minority of species (11% of the total recorded) showed evidence of colonisation and/or extinction events despite sizeable populations (some upwards of 50 pairs). These results suggest that a longer-term view is required to take into account turnover involving more common species.

    AB - The theory of island biogeography has revolutionised the study of island biology stimulating considerable debate and leading to the development of new advances in related areas. One criticism of the theory is that it is ‘true but trivial’, i.e., on the basis of analyses of annual turnovers of organisms on islands, it has been posited that stochastic turnover mainly comprises rare species, or repeated immigrations and extinctions thereof, and thereby contribute little to the overall ecological dynamics. Here, both the absolute and relative turnover of breeding land birds are analysed for populations on Skokholm, Wales, over census intervals of 1, 3, 6, 12, and 24 years. As expected, over short census intervals (≤6 years), much of the turnover comprised repeated colonisations and extinctions of rare species. However, at longer intervals (12 and 24 years), a sizeable minority of species (11% of the total recorded) showed evidence of colonisation and/or extinction events despite sizeable populations (some upwards of 50 pairs). These results suggest that a longer-term view is required to take into account turnover involving more common species.

    KW - Island biogeography

    KW - turnover

    KW - immigration

    KW - extinction

    KW - population

    KW - birds (Aves)

    KW - ecology

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    JO - Diversity

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